Commit Graph

39278 Commits

Author SHA1 Message Date
Linus Torvalds
e5075d8ec5 RISC-V Patches for the 6.8 Merge Window, Part 4
This includes everything from part 2:
 
 * Support for tuning for systems with fast misaligned accesses.
 * Support for SBI-based suspend.
 * Support for the new SBI debug console extension.
 * The T-Head CMOs now use PA-based flushes.
 * Support for enabling the V extension in kernel code.
 * Optimized IP checksum routines.
 * Various ftrace improvements.
 * Support for archrandom, which depends on the Zkr extension.
 
 and then also a fix for those:
 
 * The build is no longer broken under NET=n, KUNIT=y for ports that
   don't define their own ipv6 checksum.
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Merge tag 'riscv-for-linus-6.8-mw4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull more RISC-V updates from Palmer Dabbelt:

 - Support for tuning for systems with fast misaligned accesses.

 - Support for SBI-based suspend.

 - Support for the new SBI debug console extension.

 - The T-Head CMOs now use PA-based flushes.

 - Support for enabling the V extension in kernel code.

 - Optimized IP checksum routines.

 - Various ftrace improvements.

 - Support for archrandom, which depends on the Zkr extension.

 - The build is no longer broken under NET=n, KUNIT=y for ports that
   don't define their own ipv6 checksum.

* tag 'riscv-for-linus-6.8-mw4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (56 commits)
  lib: checksum: Fix build with CONFIG_NET=n
  riscv: lib: Check if output in asm goto supported
  riscv: Fix build error on rv32 + XIP
  riscv: optimize ELF relocation function in riscv
  RISC-V: Implement archrandom when Zkr is available
  riscv: Optimize hweight API with Zbb extension
  riscv: add dependency among Image(.gz), loader(.bin), and vmlinuz.efi
  samples: ftrace: Add RISC-V support for SAMPLE_FTRACE_DIRECT[_MULTI]
  riscv: ftrace: Add DYNAMIC_FTRACE_WITH_DIRECT_CALLS support
  riscv: ftrace: Make function graph use ftrace directly
  riscv: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY
  lib/Kconfig.debug: Update AS_HAS_NON_CONST_LEB128 comment and name
  riscv: Restrict DWARF5 when building with LLVM to known working versions
  riscv: Hoist linker relaxation disabling logic into Kconfig
  kunit: Add tests for csum_ipv6_magic and ip_fast_csum
  riscv: Add checksum library
  riscv: Add checksum header
  riscv: Add static key for misaligned accesses
  asm-generic: Improve csum_fold
  RISC-V: selftests: cbo: Ensure asm operands match constraints
  ...
2024-01-20 11:06:04 -08:00
Linus Torvalds
9d64bf433c perf tools improvements and fixes for v6.8:
- Add Namhyung Kim as tools/perf/ co-maintainer, we're taking turns processing
   patches, switching roles from perf-tools to perf-tools-next at each Linux
   release.
 
 Data profiling:
 
 - Associate samples that identify loads and stores with data structures. This
   uses events available on Intel, AMD and others and DWARF info:
 
     # To get memory access samples in kernel for 1 second (on Intel)
     $ perf mem record -a -K --ldlat=4 -- sleep 1
 
     # Similar for the AMD (but it requires 6.3+ kernel for BPF filters)
     $ perf mem record -a --filter 'mem_op == load || mem_op == store, ip > 0x8000000000000000' -- sleep 1
 
   Then, amongst several modes of post processing, one can do things like:
 
     $ perf report -s type,typeoff --hierarchy --group --stdio
     ...
     #
     # Samples: 10K of events 'cpu/mem-loads,ldlat=4/P, cpu/mem-stores/P, dummy:u'
     # Event count (approx.): 602758064
     #
     #                    Overhead  Data Type / Data Type Offset
     # ...........................  ............................
     #
         26.09%   3.28%   0.00%     long unsigned int
            26.09%   3.28%   0.00%     long unsigned int +0 (no field)
         18.48%   0.73%   0.00%     struct page
            10.83%   0.02%   0.00%     struct page +8 (lru.next)
             3.90%   0.28%   0.00%     struct page +0 (flags)
             3.45%   0.06%   0.00%     struct page +24 (mapping)
             0.25%   0.28%   0.00%     struct page +48 (_mapcount.counter)
             0.02%   0.06%   0.00%     struct page +32 (index)
             0.02%   0.00%   0.00%     struct page +52 (_refcount.counter)
             0.02%   0.01%   0.00%     struct page +56 (memcg_data)
             0.00%   0.01%   0.00%     struct page +16 (lru.prev)
         15.37%  17.54%   0.00%     (stack operation)
            15.37%  17.54%   0.00%     (stack operation) +0 (no field)
         11.71%  50.27%   0.00%     (unknown)
            11.71%  50.27%   0.00%     (unknown) +0 (no field)
 
     $ perf annotate --data-type
     ...
     Annotate type: 'struct cfs_rq' in [kernel.kallsyms] (13 samples):
     ============================================================================
         samples     offset       size  field
              13          0        640  struct cfs_rq         {
               2          0         16      struct load_weight       load {
               2          0          8          unsigned long        weight;
               0          8          4          u32  inv_weight;
                                            };
               0         16          8      unsigned long    runnable_weight;
               0         24          4      unsigned int     nr_running;
               1         28          4      unsigned int     h_nr_running;
     ...
 
     $ perf annotate --data-type=page --group
     Annotate type: 'struct page' in [kernel.kallsyms] (480 samples):
      event[0] = cpu/mem-loads,ldlat=4/P
      event[1] = cpu/mem-stores/P
      event[2] = dummy:u
     ===================================================================================
              samples  offset  size  field
     447  33        0       0    64  struct page     {
     108   8        0       0     8	 long unsigned int  flags;
     319  13        0       8    40	 union       {
     319  13        0       8    40          struct          {
     236   2        0       8    16              union       {
     236   2        0       8    16                  struct list_head       lru {
     236   1        0       8     8                      struct list_head*  next;
       0   1        0      16     8                      struct list_head*  prev;
                                                     };
     236   2        0       8    16                  struct          {
     236   1        0       8     8                      void*      __filler;
       0   1        0      16     4                      unsigned int       mlock_count;
                                                     };
     236   2        0       8    16                  struct list_head       buddy_list {
     236   1        0       8     8                      struct list_head*  next;
       0   1        0      16     8                      struct list_head*  prev;
                                                     };
     236   2        0       8    16                  struct list_head       pcp_list {
     236   1        0       8     8                      struct list_head*  next;
       0   1        0      16     8                      struct list_head*  prev;
                                                     };
                                                 };
      82   4        0      24     8              struct address_space*      mapping;
       1   7        0      32     8              union       {
       1   7        0      32     8                  long unsigned int      index;
       1   7        0      32     8                  long unsigned int      share;
                                                 };
       0   0        0      40     8              long unsigned int  private;
                                                               };
 
   This uses the existing annotate code, calling objdump to do the disassembly,
   with improvements to avoid having this take too long, but longer term a
   switch to a disassembler library, possibly reusing code in the kernel will
   be pursued.
 
   This is the initial implementation, please use it and report impressions and
   bugs. Make sure the kernel-debuginfo packages match the running kernel. The
   'perf report' phase for non short perf.data files may take a while.
 
   There is a great article about it on LWN:
 
   https://lwn.net/Articles/955709/ - "Data-type profiling for perf"
 
   One last test I did while writing this text, on a AMD Ryzen 5950X, using a distro
   kernel, while doing a simple 'find /' on an otherwise idle system resulted in:
 
   # uname -r
   6.6.9-100.fc38.x86_64
   # perf -vv | grep BPF_
                    bpf: [ on  ]  # HAVE_LIBBPF_SUPPORT
          bpf_skeletons: [ on  ]  # HAVE_BPF_SKEL
   # rpm -qa | grep kernel-debuginfo
   kernel-debuginfo-common-x86_64-6.6.9-100.fc38.x86_64
   kernel-debuginfo-6.6.9-100.fc38.x86_64
   #
   # perf mem record -a --filter 'mem_op == load || mem_op == store, ip > 0x8000000000000000'
   ^C[ perf record: Woken up 1 times to write data ]
   [ perf record: Captured and wrote 2.199 MB perf.data (2913 samples) ]
   #
   # ls -la perf.data
   -rw-------. 1 root root 2346486 Jan  9 18:36 perf.data
   # perf evlist
   ibs_op//
   dummy:u
   # perf evlist -v
   ibs_op//: type: 11, size: 136, config: 0, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|ADDR|CPU|PERIOD|IDENTIFIER|DATA_SRC|WEIGHT, read_format: ID, disabled: 1, inherit: 1, freq: 1, sample_id_all: 1
   dummy:u: type: 1 (PERF_TYPE_SOFTWARE), size: 136, config: 0x9 (PERF_COUNT_SW_DUMMY), { sample_period, sample_freq }: 1, sample_type: IP|TID|TIME|ADDR|CPU|IDENTIFIER|DATA_SRC|WEIGHT, read_format: ID, inherit: 1, exclude_kernel: 1, exclude_hv: 1, mmap: 1, comm: 1, task: 1, mmap_data: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1, ksymbol: 1, bpf_event: 1
   #
   # perf report -s type,typeoff --hierarchy --group --stdio
   # Total Lost Samples: 0
   #
   # Samples: 2K of events 'ibs_op//, dummy:u'
   # Event count (approx.): 1904553038
   #
   #            Overhead  Data Type / Data Type Offset
   # ...................  ............................
   #
       73.70%   0.00%     (unknown)
          73.70%   0.00%     (unknown) +0 (no field)
        3.01%   0.00%     long unsigned int
           3.00%   0.00%     long unsigned int +0 (no field)
           0.01%   0.00%     long unsigned int +2 (no field)
        2.73%   0.00%     struct task_struct
           1.71%   0.00%     struct task_struct +52 (on_cpu)
           0.38%   0.00%     struct task_struct +2104 (rcu_read_unlock_special.b.blocked)
           0.23%   0.00%     struct task_struct +2100 (rcu_read_lock_nesting)
           0.14%   0.00%     struct task_struct +2384 ()
           0.06%   0.00%     struct task_struct +3096 (signal)
           0.05%   0.00%     struct task_struct +3616 (cgroups)
           0.05%   0.00%     struct task_struct +2344 (active_mm)
           0.02%   0.00%     struct task_struct +46 (flags)
           0.02%   0.00%     struct task_struct +2096 (migration_disabled)
           0.01%   0.00%     struct task_struct +24 (__state)
           0.01%   0.00%     struct task_struct +3956 (mm_cid_active)
           0.01%   0.00%     struct task_struct +1048 (cpus_ptr)
           0.01%   0.00%     struct task_struct +184 (se.group_node.next)
           0.01%   0.00%     struct task_struct +20 (thread_info.cpu)
           0.00%   0.00%     struct task_struct +104 (on_rq)
           0.00%   0.00%     struct task_struct +2456 (pid)
        1.36%   0.00%     struct module
           0.59%   0.00%     struct module +952 (kallsyms)
           0.42%   0.00%     struct module +0 (state)
           0.23%   0.00%     struct module +8 (list.next)
           0.12%   0.00%     struct module +216 (syms)
        0.95%   0.00%     struct inode
           0.41%   0.00%     struct inode +40 (i_sb)
           0.22%   0.00%     struct inode +0 (i_mode)
           0.06%   0.00%     struct inode +76 (i_rdev)
           0.06%   0.00%     struct inode +56 (i_security)
   <SNIP>
 
 perf top/report:
 
 - Don't ignore job control, allowing control+Z + bg to work.
 
 - Add s390 raw data interpretation for PAI (Processor Activity Instrumentation)
   counters.
 
 perf archive:
 
 - Add new option '--all' to pack perf.data with DSOs.
 
 - Add new option '--unpack' to expand tarballs.
 
 Initialization speedups:
 
 - Lazily initialize zstd streams to save memory when not using it.
 
 - Lazily allocate/size mmap event copy.
 
 - Lazy load kernel symbols in 'perf record'.
 
 - Be lazier in allocating lost samples buffer in 'perf record'.
 
 - Don't synthesize BPF events when disabled via the command line (perf record --no-bpf-event).
 
 Assorted improvements:
 
 - Show note on AMD systems that the :p, :pp, :ppp and :P are all the same, as
   IBS (Instruction Based Sampling) is used and it is inherentely precise, not
   having levels of precision like in Intel systems.
 
 - When 'cycles' isn't available, fall back to the "task-clock" event when not
   system wide, not to 'cpu-clock'.
 
 - Add --debug-file option to redirect debug output, e.g.:
 
     $ perf --debug-file /tmp/perf.log record -v true
 
 - Shrink 'struct map' to under one cacheline by avoiding function pointers for
   selecting if addresses are identity or DSO relative, and using just a byte for
   some boolean struct members.
 
 - Resolve the arch specific strerrno just once to use in perf_env__arch_strerrno().
 
 - Reduce memory for recording PERF_RECORD_LOST_SAMPLES event.
 
 Assorted fixes:
 
 - Fix the default 'perf top' usage on Intel hybrid systems, now it starts with
   a browser showing the number of samples for Efficiency (cpu_atom/cycles/P) and
   Performance (cpu_core/cycles/P). This behaviour is similar on ARM64, with its
   respective set of big.LITTLE processors.
 
 - Fix segfault on build_mem_topology() error path.
 
 - Fix 'perf mem' error on hybrid related to availability of mem event in a PMU.
 
 - Fix missing reference count gets (map, maps) in the db-export code.
 
 - Avoid recursively taking env->bpf_progs.lock in the 'perf_env' code.
 
 - Use the newly introduced maps__for_each_map() to add missing locking around
   iteration of 'struct map' entries.
 
 - Parse NOTE segments until the build id is found, don't stop on the first one,
   ELF files may have several such NOTE segments.
 
 - Remove 'egrep' usage, its deprecated, use 'grep -E' instead.
 
 - Warn first about missing libelf, not libbpf, that depends on libelf.
 
 - Use alternative to 'find ... -printf' as this isn't supported in busybox.
 
 - Address python 3.6 DeprecationWarning for string scapes.
 
 - Fix memory leak in uniq() in libsubcmd.
 
 - Fix man page formatting for 'perf lock'
 
 - Fix some spelling mistakes.
 
 perf tests:
 
 - Fail shell tests that needs some symbol in perf itself if it is stripped.
   These tests check if a symbol is resolved, if some hot function is indeed
   detected by profiling, etc.
 
 - The 'perf test sigtrap' test is currently failing on PREEMPT_RT, skip it if
   sleeping spinlocks are detected (using BTF) and point to the mailing list
   discussion about it. This test is also being skipped on several architectures
   (powerpc, s390x, arm and aarch64) due to other pending issues with intruction
   breakpoints.
 
 - Adjust test case perf record offcpu profiling tests for s390.
 
 - Fix 'Setup struct perf_event_attr' fails on s390 on z/VM guest, addressing
   issues caused by the fallback from cycles to task-clock done in this release.
 
 - Fix mask for VG register in the user-regs test.
 
 - Use shellcheck on 'perf test' shell scripts automatically to make sure changes
   don't introduce things it flags as problematic.
 
 - Add option to change objdump binary and allow it to be set via 'perf config'.
 
 - Add basic 'perf script', 'perf list --json" and 'perf diff' tests.
 
 - Basic branch counter support.
 
 - Make DSO tests a suite rather than individual.
 
 - Remove atomics from test_loop to avoid test failures.
 
 - Fix call chain match on powerpc for the record+probe_libc_inet_pton test.
 
 - Improve Intel hybrid tests.
 
 Vendor event files (JSON):
 
 powerpc:
 
 - Update datasource event name to fix duplicate events on IBM's Power10.
 
 - Add PVN for HX-C2000 CPU with Power8 Architecture.
 
 Intel:
 
 - Alderlake/rocketlake metric fixes.
 
 - Update emeraldrapids events to v1.02.
 
 - Update icelakex events to v1.23.
 
 - Update sapphirerapids events to v1.17.
 
 - Add skx, clx, icx and spr upi bandwidth metric.
 
 AMD:
 
 - Add Zen 4 memory controller events.
 
 RISC-V:
 
 - Add StarFive Dubhe-80 and Dubhe-90 JSON files.
   https://www.starfivetech.com/en/site/cpu-u
 
 - Add T-HEAD C9xx JSON file.
   https://github.com/riscv-software-src/opensbi/blob/master/docs/platform/thead-c9xx.md
 
 ARM64:
 
 - Remove UTF-8 characters from cmn.json, that were causing build failure in some
   distros.
 
 - Add core PMU events and metrics for Ampere One X.
 
 - Rename Ampere One's BPU_FLUSH_MEM_FAULT to GPC_FLUSH_MEM_FAULT
 
 libperf:
 
 - Rename several perf_cpu_map constructor names to clarify what they really do.
 
 - Ditto for some other methods, coping with some issues in their semantics,
   like perf_cpu_map__empty() -> perf_cpu_map__has_any_cpu_or_is_empty().
 
 - Document perf_cpu_map__nr()'s behavior
 
 perf stat:
 
 - Exit if parse groups fails.
 
 - Combine the -A/--no-aggr and --no-merge options.
 
 - Fix help message for --metric-no-threshold option.
 
 Hardware tracing:
 
 ARM64 CoreSight:
 
 - Bump minimum OpenCSD version to ensure a bugfix is present.
 
 - Add 'T' itrace option for timestamp trace
 
 - Set start vm addr of exectable file to 0 and don't ignore first sample on the
   arm-cs-trace-disasm.py 'perf script'.
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-for-v6.8-1-2024-01-09' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools

Pull perf tools updates from Arnaldo Carvalho de Melo:
 "Add Namhyung Kim as tools/perf/ co-maintainer, we're taking turns
  processing patches, switching roles from perf-tools to perf-tools-next
  at each Linux release.

  Data profiling:

   - Associate samples that identify loads and stores with data
     structures. This uses events available on Intel, AMD and others and
     DWARF info:

       # To get memory access samples in kernel for 1 second (on Intel)
       $ perf mem record -a -K --ldlat=4 -- sleep 1

       # Similar for the AMD (but it requires 6.3+ kernel for BPF filters)
       $ perf mem record -a --filter 'mem_op == load || mem_op == store, ip > 0x8000000000000000' -- sleep 1

     Then, amongst several modes of post processing, one can do things like:

       $ perf report -s type,typeoff --hierarchy --group --stdio
       ...
       #
       # Samples: 10K of events 'cpu/mem-loads,ldlat=4/P, cpu/mem-stores/P, dummy:u'
       # Event count (approx.): 602758064
       #
       #                    Overhead  Data Type / Data Type Offset
       # ...........................  ............................
       #
           26.09%   3.28%   0.00%     long unsigned int
              26.09%   3.28%   0.00%     long unsigned int +0 (no field)
           18.48%   0.73%   0.00%     struct page
              10.83%   0.02%   0.00%     struct page +8 (lru.next)
               3.90%   0.28%   0.00%     struct page +0 (flags)
               3.45%   0.06%   0.00%     struct page +24 (mapping)
               0.25%   0.28%   0.00%     struct page +48 (_mapcount.counter)
               0.02%   0.06%   0.00%     struct page +32 (index)
               0.02%   0.00%   0.00%     struct page +52 (_refcount.counter)
               0.02%   0.01%   0.00%     struct page +56 (memcg_data)
               0.00%   0.01%   0.00%     struct page +16 (lru.prev)
           15.37%  17.54%   0.00%     (stack operation)
              15.37%  17.54%   0.00%     (stack operation) +0 (no field)
           11.71%  50.27%   0.00%     (unknown)
              11.71%  50.27%   0.00%     (unknown) +0 (no field)

       $ perf annotate --data-type
       ...
       Annotate type: 'struct cfs_rq' in [kernel.kallsyms] (13 samples):
       ============================================================================
           samples     offset       size  field
                13          0        640  struct cfs_rq         {
                 2          0         16      struct load_weight       load {
                 2          0          8          unsigned long        weight;
                 0          8          4          u32  inv_weight;
                                              };
                 0         16          8      unsigned long    runnable_weight;
                 0         24          4      unsigned int     nr_running;
                 1         28          4      unsigned int     h_nr_running;
       ...

       $ perf annotate --data-type=page --group
       Annotate type: 'struct page' in [kernel.kallsyms] (480 samples):
        event[0] = cpu/mem-loads,ldlat=4/P
        event[1] = cpu/mem-stores/P
        event[2] = dummy:u
       ===================================================================================
                samples  offset  size  field
       447  33        0       0    64  struct page     {
       108   8        0       0     8	 long unsigned int  flags;
       319  13        0       8    40	 union       {
       319  13        0       8    40          struct          {
       236   2        0       8    16              union       {
       236   2        0       8    16                  struct list_head       lru {
       236   1        0       8     8                      struct list_head*  next;
         0   1        0      16     8                      struct list_head*  prev;
                                                       };
       236   2        0       8    16                  struct          {
       236   1        0       8     8                      void*      __filler;
         0   1        0      16     4                      unsigned int       mlock_count;
                                                       };
       236   2        0       8    16                  struct list_head       buddy_list {
       236   1        0       8     8                      struct list_head*  next;
         0   1        0      16     8                      struct list_head*  prev;
                                                       };
       236   2        0       8    16                  struct list_head       pcp_list {
       236   1        0       8     8                      struct list_head*  next;
         0   1        0      16     8                      struct list_head*  prev;
                                                       };
                                                   };
        82   4        0      24     8              struct address_space*      mapping;
         1   7        0      32     8              union       {
         1   7        0      32     8                  long unsigned int      index;
         1   7        0      32     8                  long unsigned int      share;
                                                   };
         0   0        0      40     8              long unsigned int  private;
                                                                 };

     This uses the existing annotate code, calling objdump to do the
     disassembly, with improvements to avoid having this take too long,
     but longer term a switch to a disassembler library, possibly
     reusing code in the kernel will be pursued.

     This is the initial implementation, please use it and report
     impressions and bugs. Make sure the kernel-debuginfo packages match
     the running kernel. The 'perf report' phase for non short perf.data
     files may take a while.

     There is a great article about it on LWN:

       https://lwn.net/Articles/955709/ - "Data-type profiling for perf"

     One last test I did while writing this text, on a AMD Ryzen 5950X,
     using a distro kernel, while doing a simple 'find /' on an
     otherwise idle system resulted in:

     # uname -r
     6.6.9-100.fc38.x86_64
     # perf -vv | grep BPF_
                      bpf: [ on  ]  # HAVE_LIBBPF_SUPPORT
            bpf_skeletons: [ on  ]  # HAVE_BPF_SKEL
     # rpm -qa | grep kernel-debuginfo
     kernel-debuginfo-common-x86_64-6.6.9-100.fc38.x86_64
     kernel-debuginfo-6.6.9-100.fc38.x86_64
     #
     # perf mem record -a --filter 'mem_op == load || mem_op == store, ip > 0x8000000000000000'
     ^C[ perf record: Woken up 1 times to write data ]
     [ perf record: Captured and wrote 2.199 MB perf.data (2913 samples) ]
     #
     # ls -la perf.data
     -rw-------. 1 root root 2346486 Jan  9 18:36 perf.data
     # perf evlist
     ibs_op//
     dummy:u
     # perf evlist -v
     ibs_op//: type: 11, size: 136, config: 0, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|ADDR|CPU|PERIOD|IDENTIFIER|DATA_SRC|WEIGHT, read_format: ID, disabled: 1, inherit: 1, freq: 1, sample_id_all: 1
     dummy:u: type: 1 (PERF_TYPE_SOFTWARE), size: 136, config: 0x9 (PERF_COUNT_SW_DUMMY), { sample_period, sample_freq }: 1, sample_type: IP|TID|TIME|ADDR|CPU|IDENTIFIER|DATA_SRC|WEIGHT, read_format: ID, inherit: 1, exclude_kernel: 1, exclude_hv: 1, mmap: 1, comm: 1, task: 1, mmap_data: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1, ksymbol: 1, bpf_event: 1
     #
     # perf report -s type,typeoff --hierarchy --group --stdio
     # Total Lost Samples: 0
     #
     # Samples: 2K of events 'ibs_op//, dummy:u'
     # Event count (approx.): 1904553038
     #
     #            Overhead  Data Type / Data Type Offset
     # ...................  ............................
     #
         73.70%   0.00%     (unknown)
            73.70%   0.00%     (unknown) +0 (no field)
          3.01%   0.00%     long unsigned int
             3.00%   0.00%     long unsigned int +0 (no field)
             0.01%   0.00%     long unsigned int +2 (no field)
          2.73%   0.00%     struct task_struct
             1.71%   0.00%     struct task_struct +52 (on_cpu)
             0.38%   0.00%     struct task_struct +2104 (rcu_read_unlock_special.b.blocked)
             0.23%   0.00%     struct task_struct +2100 (rcu_read_lock_nesting)
             0.14%   0.00%     struct task_struct +2384 ()
             0.06%   0.00%     struct task_struct +3096 (signal)
             0.05%   0.00%     struct task_struct +3616 (cgroups)
             0.05%   0.00%     struct task_struct +2344 (active_mm)
             0.02%   0.00%     struct task_struct +46 (flags)
             0.02%   0.00%     struct task_struct +2096 (migration_disabled)
             0.01%   0.00%     struct task_struct +24 (__state)
             0.01%   0.00%     struct task_struct +3956 (mm_cid_active)
             0.01%   0.00%     struct task_struct +1048 (cpus_ptr)
             0.01%   0.00%     struct task_struct +184 (se.group_node.next)
             0.01%   0.00%     struct task_struct +20 (thread_info.cpu)
             0.00%   0.00%     struct task_struct +104 (on_rq)
             0.00%   0.00%     struct task_struct +2456 (pid)
          1.36%   0.00%     struct module
             0.59%   0.00%     struct module +952 (kallsyms)
             0.42%   0.00%     struct module +0 (state)
             0.23%   0.00%     struct module +8 (list.next)
             0.12%   0.00%     struct module +216 (syms)
          0.95%   0.00%     struct inode
             0.41%   0.00%     struct inode +40 (i_sb)
             0.22%   0.00%     struct inode +0 (i_mode)
             0.06%   0.00%     struct inode +76 (i_rdev)
             0.06%   0.00%     struct inode +56 (i_security)
     <SNIP>

  perf top/report:

   - Don't ignore job control, allowing control+Z + bg to work.

   - Add s390 raw data interpretation for PAI (Processor Activity
     Instrumentation) counters.

  perf archive:

   - Add new option '--all' to pack perf.data with DSOs.

   - Add new option '--unpack' to expand tarballs.

  Initialization speedups:

   - Lazily initialize zstd streams to save memory when not using it.

   - Lazily allocate/size mmap event copy.

   - Lazy load kernel symbols in 'perf record'.

   - Be lazier in allocating lost samples buffer in 'perf record'.

   - Don't synthesize BPF events when disabled via the command line
     (perf record --no-bpf-event).

  Assorted improvements:

   - Show note on AMD systems that the :p, :pp, :ppp and :P are all the
     same, as IBS (Instruction Based Sampling) is used and it is
     inherentely precise, not having levels of precision like in Intel
     systems.

   - When 'cycles' isn't available, fall back to the "task-clock" event
     when not system wide, not to 'cpu-clock'.

   - Add --debug-file option to redirect debug output, e.g.:

       $ perf --debug-file /tmp/perf.log record -v true

   - Shrink 'struct map' to under one cacheline by avoiding function
     pointers for selecting if addresses are identity or DSO relative,
     and using just a byte for some boolean struct members.

   - Resolve the arch specific strerrno just once to use in
     perf_env__arch_strerrno().

   - Reduce memory for recording PERF_RECORD_LOST_SAMPLES event.

  Assorted fixes:

   - Fix the default 'perf top' usage on Intel hybrid systems, now it
     starts with a browser showing the number of samples for Efficiency
     (cpu_atom/cycles/P) and Performance (cpu_core/cycles/P). This
     behaviour is similar on ARM64, with its respective set of
     big.LITTLE processors.

   - Fix segfault on build_mem_topology() error path.

   - Fix 'perf mem' error on hybrid related to availability of mem event
     in a PMU.

   - Fix missing reference count gets (map, maps) in the db-export code.

   - Avoid recursively taking env->bpf_progs.lock in the 'perf_env'
     code.

   - Use the newly introduced maps__for_each_map() to add missing
     locking around iteration of 'struct map' entries.

   - Parse NOTE segments until the build id is found, don't stop on the
     first one, ELF files may have several such NOTE segments.

   - Remove 'egrep' usage, its deprecated, use 'grep -E' instead.

   - Warn first about missing libelf, not libbpf, that depends on
     libelf.

   - Use alternative to 'find ... -printf' as this isn't supported in
     busybox.

   - Address python 3.6 DeprecationWarning for string scapes.

   - Fix memory leak in uniq() in libsubcmd.

   - Fix man page formatting for 'perf lock'

   - Fix some spelling mistakes.

  perf tests:

   - Fail shell tests that needs some symbol in perf itself if it is
     stripped. These tests check if a symbol is resolved, if some hot
     function is indeed detected by profiling, etc.

   - The 'perf test sigtrap' test is currently failing on PREEMPT_RT,
     skip it if sleeping spinlocks are detected (using BTF) and point to
     the mailing list discussion about it. This test is also being
     skipped on several architectures (powerpc, s390x, arm and aarch64)
     due to other pending issues with intruction breakpoints.

   - Adjust test case perf record offcpu profiling tests for s390.

   - Fix 'Setup struct perf_event_attr' fails on s390 on z/VM guest,
     addressing issues caused by the fallback from cycles to task-clock
     done in this release.

   - Fix mask for VG register in the user-regs test.

   - Use shellcheck on 'perf test' shell scripts automatically to make
     sure changes don't introduce things it flags as problematic.

   - Add option to change objdump binary and allow it to be set via
     'perf config'.

   - Add basic 'perf script', 'perf list --json" and 'perf diff' tests.

   - Basic branch counter support.

   - Make DSO tests a suite rather than individual.

   - Remove atomics from test_loop to avoid test failures.

   - Fix call chain match on powerpc for the record+probe_libc_inet_pton
     test.

   - Improve Intel hybrid tests.

  Vendor event files (JSON):

  powerpc:

   - Update datasource event name to fix duplicate events on IBM's
     Power10.

   - Add PVN for HX-C2000 CPU with Power8 Architecture.

  Intel:

   - Alderlake/rocketlake metric fixes.

   - Update emeraldrapids events to v1.02.

   - Update icelakex events to v1.23.

   - Update sapphirerapids events to v1.17.

   - Add skx, clx, icx and spr upi bandwidth metric.

  AMD:

   - Add Zen 4 memory controller events.

  RISC-V:

   - Add StarFive Dubhe-80 and Dubhe-90 JSON files.
       https://www.starfivetech.com/en/site/cpu-u

   - Add T-HEAD C9xx JSON file.
       https://github.com/riscv-software-src/opensbi/blob/master/docs/platform/thead-c9xx.md

  ARM64:

   - Remove UTF-8 characters from cmn.json, that were causing build
     failure in some distros.

   - Add core PMU events and metrics for Ampere One X.

   - Rename Ampere One's BPU_FLUSH_MEM_FAULT to GPC_FLUSH_MEM_FAULT

  libperf:

   - Rename several perf_cpu_map constructor names to clarify what they
     really do.

   - Ditto for some other methods, coping with some issues in their
     semantics, like perf_cpu_map__empty() ->
     perf_cpu_map__has_any_cpu_or_is_empty().

   - Document perf_cpu_map__nr()'s behavior

  perf stat:

   - Exit if parse groups fails.

   - Combine the -A/--no-aggr and --no-merge options.

   - Fix help message for --metric-no-threshold option.

  Hardware tracing:

  ARM64 CoreSight:

   - Bump minimum OpenCSD version to ensure a bugfix is present.

   - Add 'T' itrace option for timestamp trace

   - Set start vm addr of exectable file to 0 and don't ignore first
     sample on the arm-cs-trace-disasm.py 'perf script'"

* tag 'perf-tools-for-v6.8-1-2024-01-09' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (179 commits)
  MAINTAINERS: Add Namhyung as tools/perf/ co-maintainer
  perf test: test case 'Setup struct perf_event_attr' fails on s390 on z/vm
  perf db-export: Fix missing reference count get in call_path_from_sample()
  perf tests: Add perf script test
  libsubcmd: Fix memory leak in uniq()
  perf TUI: Don't ignore job control
  perf vendor events intel: Update sapphirerapids events to v1.17
  perf vendor events intel: Update icelakex events to v1.23
  perf vendor events intel: Update emeraldrapids events to v1.02
  perf vendor events intel: Alderlake/rocketlake metric fixes
  perf x86 test: Add hybrid test for conflicting legacy/sysfs event
  perf x86 test: Update hybrid expectations
  perf vendor events amd: Add Zen 4 memory controller events
  perf stat: Fix hard coded LL miss units
  perf record: Reduce memory for recording PERF_RECORD_LOST_SAMPLES event
  perf env: Avoid recursively taking env->bpf_progs.lock
  perf annotate: Add --insn-stat option for debugging
  perf annotate: Add --type-stat option for debugging
  perf annotate: Support event group display
  perf annotate: Add --data-type option
  ...
2024-01-19 14:25:23 -08:00
Linus Torvalds
736b5545d3 Including fixes from bpf and netfilter.
Previous releases - regressions:
 
  - Revert "net: rtnetlink: Enslave device before bringing it up",
    breaks the case inverse to the one it was trying to fix
 
  - net: dsa: fix oob access in DSA's netdevice event handler
    dereference netdev_priv() before check its a DSA port
 
  - sched: track device in tcf_block_get/put_ext() only for clsact
    binder types
 
  - net: tls, fix WARNING in __sk_msg_free when record becomes full
    during splice and MORE hint set
 
  - sfp-bus: fix SFP mode detect from bitrate
 
  - drv: stmmac: prevent DSA tags from breaking COE
 
 Previous releases - always broken:
 
  - bpf: fix no forward progress in in bpf_iter_udp if output
    buffer is too small
 
  - bpf: reject variable offset alu on registers with a type
    of PTR_TO_FLOW_KEYS to prevent oob access
 
  - netfilter: tighten input validation
 
  - net: add more sanity check in virtio_net_hdr_to_skb()
 
  - rxrpc: fix use of Don't Fragment flag on RESPONSE packets,
    avoid infinite loop
 
  - amt: do not use the portion of skb->cb area which may get clobbered
 
  - mptcp: improve validation of the MPTCPOPT_MP_JOIN MCTCP option
 
 Misc:
 
  - spring cleanup of inactive maintainers
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from bpf and netfilter.

  Previous releases - regressions:

   - Revert "net: rtnetlink: Enslave device before bringing it up",
     breaks the case inverse to the one it was trying to fix

   - net: dsa: fix oob access in DSA's netdevice event handler
     dereference netdev_priv() before check its a DSA port

   - sched: track device in tcf_block_get/put_ext() only for clsact
     binder types

   - net: tls, fix WARNING in __sk_msg_free when record becomes full
     during splice and MORE hint set

   - sfp-bus: fix SFP mode detect from bitrate

   - drv: stmmac: prevent DSA tags from breaking COE

  Previous releases - always broken:

   - bpf: fix no forward progress in in bpf_iter_udp if output buffer is
     too small

   - bpf: reject variable offset alu on registers with a type of
     PTR_TO_FLOW_KEYS to prevent oob access

   - netfilter: tighten input validation

   - net: add more sanity check in virtio_net_hdr_to_skb()

   - rxrpc: fix use of Don't Fragment flag on RESPONSE packets, avoid
     infinite loop

   - amt: do not use the portion of skb->cb area which may get clobbered

   - mptcp: improve validation of the MPTCPOPT_MP_JOIN MCTCP option

  Misc:

   - spring cleanup of inactive maintainers"

* tag 'net-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (88 commits)
  i40e: Include types.h to some headers
  ipv6: mcast: fix data-race in ipv6_mc_down / mld_ifc_work
  selftests: mlxsw: qos_pfc: Adjust the test to support 8 lanes
  selftests: mlxsw: qos_pfc: Remove wrong description
  mlxsw: spectrum_router: Register netdevice notifier before nexthop
  mlxsw: spectrum_acl_tcam: Fix stack corruption
  mlxsw: spectrum_acl_tcam: Fix NULL pointer dereference in error path
  mlxsw: spectrum_acl_erp: Fix error flow of pool allocation failure
  ethtool: netlink: Add missing ethnl_ops_begin/complete
  selftests: bonding: Add more missing config options
  selftests: netdevsim: add a config file
  libbpf: warn on unexpected __arg_ctx type when rewriting BTF
  selftests/bpf: add tests confirming type logic in kernel for __arg_ctx
  bpf: enforce types for __arg_ctx-tagged arguments in global subprogs
  bpf: extract bpf_ctx_convert_map logic and make it more reusable
  libbpf: feature-detect arg:ctx tag support in kernel
  ipvs: avoid stat macros calls from preemptible context
  netfilter: nf_tables: reject NFT_SET_CONCAT with not field length description
  netfilter: nf_tables: skip dead set elements in netlink dump
  netfilter: nf_tables: do not allow mismatch field size and set key length
  ...
2024-01-18 17:33:50 -08:00
Linus Torvalds
db5ccb9eb2 cxl for v6.8
- Add support for parsing the Coherent Device Attribute Table (CDAT)
 
 - Add support for calculating a platform CXL QoS class from CDAT data
 
 - Unify the tracing of EFI CXL Events with native CXL Events.
 
 - Add Get Timestamp support
 
 - Miscellaneous cleanups and fixups
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Merge tag 'cxl-for-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl

Pull CXL (Compute Express Link) updates from Dan Williams:
 "The bulk of this update is support for enumerating the performance
  capabilities of CXL memory targets and connecting that to a platform
  CXL memory QoS class. Some follow-on work remains to hook up this data
  into core-mm policy, but that is saved for v6.9.

  The next significant update is unifying how CXL event records (things
  like background scrub errors) are processed between so called
  "firmware first" and native error record retrieval. The CXL driver
  handler that processes the record retrieved from the device mailbox is
  now the handler for that same record format coming from an EFI/ACPI
  notification source.

  This also contains miscellaneous feature updates, like Get Timestamp,
  and other fixups.

  Summary:

   - Add support for parsing the Coherent Device Attribute Table (CDAT)

   - Add support for calculating a platform CXL QoS class from CDAT data

   - Unify the tracing of EFI CXL Events with native CXL Events.

   - Add Get Timestamp support

   - Miscellaneous cleanups and fixups"

* tag 'cxl-for-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (41 commits)
  cxl/core: use sysfs_emit() for attr's _show()
  cxl/pci: Register for and process CPER events
  PCI: Introduce cleanup helpers for device reference counts and locks
  acpi/ghes: Process CXL Component Events
  cxl/events: Create a CXL event union
  cxl/events: Separate UUID from event structures
  cxl/events: Remove passing a UUID to known event traces
  cxl/events: Create common event UUID defines
  cxl/events: Promote CXL event structures to a core header
  cxl: Refactor to use __free() for cxl_root allocation in cxl_endpoint_port_probe()
  cxl: Refactor to use __free() for cxl_root allocation in cxl_find_nvdimm_bridge()
  cxl: Fix device reference leak in cxl_port_perf_data_calculate()
  cxl: Convert find_cxl_root() to return a 'struct cxl_root *'
  cxl: Introduce put_cxl_root() helper
  cxl/port: Fix missing target list lock
  cxl/port: Fix decoder initialization when nr_targets > interleave_ways
  cxl/region: fix x9 interleave typo
  cxl/trace: Pass UUID explicitly to event traces
  cxl/region: use %pap format to print resource_size_t
  cxl/region: Add dev_dbg() detail on failure to allocate HPA space
  ...
2024-01-18 16:22:43 -08:00
Linus Torvalds
86c4d58a99 iommufd for 6.8
This brings the first of three planned user IO page table invalidation
 operations:
 
  - IOMMU_HWPT_INVALIDATE allows invalidating the IOTLB integrated into the
    iommu itself. The Intel implementation will also generate an ATC
    invalidation to flush the device IOTLB as it unambiguously knows the
    device, but other HW will not.
 
 It goes along with the prior PR to implement userspace IO page tables (aka
 nested translation for VMs) to allow Intel to have full functionality for
 simple cases. An Intel implementation of the operation is provided.
 
 Fix a small bug in the selftest mock iommu driver probe.
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Merge tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd

Pull iommufd updates from Jason Gunthorpe:
 "This brings the first of three planned user IO page table invalidation
  operations:

   - IOMMU_HWPT_INVALIDATE allows invalidating the IOTLB integrated into
     the iommu itself. The Intel implementation will also generate an
     ATC invalidation to flush the device IOTLB as it unambiguously
     knows the device, but other HW will not.

  It goes along with the prior PR to implement userspace IO page tables
  (aka nested translation for VMs) to allow Intel to have full
  functionality for simple cases. An Intel implementation of the
  operation is provided.

  Also fix a small bug in the selftest mock iommu driver probe"

* tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd:
  iommufd/selftest: Check the bus type during probe
  iommu/vt-d: Add iotlb flush for nested domain
  iommufd: Add data structure for Intel VT-d stage-1 cache invalidation
  iommufd/selftest: Add coverage for IOMMU_HWPT_INVALIDATE ioctl
  iommufd/selftest: Add IOMMU_TEST_OP_MD_CHECK_IOTLB test op
  iommufd/selftest: Add mock_domain_cache_invalidate_user support
  iommu: Add iommu_copy_struct_from_user_array helper
  iommufd: Add IOMMU_HWPT_INVALIDATE
  iommu: Add cache_invalidate_user op
2024-01-18 15:28:15 -08:00
Linus Torvalds
a2ded784cd tracing updates for 6.8:
- Allow kernel trace instance creation to specify what events are created
   Inside the kernel, a subsystem may create a tracing instance that it can
   use to send events to user space. This sub-system may not care about the
   thousands of events that exist in eventfs. Allow the sub-system to specify
   what sub-systems of events it cares about, and only those events are exposed
   to this instance.
 
 - Allow the ring buffer to be broken up into bigger sub-buffers than just the
   architecture page size. A new tracefs file called "buffer_subbuf_size_kb"
   is created. The user can now specify a minimum size the sub-buffer may be
   in kilobytes. Note, that the implementation currently make the sub-buffer
   size a power of 2 pages (1, 2, 4, 8, 16, ...) but the user only writes in
   kilobyte size, and the sub-buffer will be updated to the next size that
   it will can accommodate it. If the user writes in 10, it will change the
   size to be 4 pages on x86 (16K), as that is the next available size that
   can hold 10K pages.
 
 - Update the debug output when a corrupt time is detected in the ring buffer.
   If the ring buffer detects inconsistent timestamps, there's a debug config
   options that will dump the contents of the meta data of the sub-buffer that
   is used for debugging. Add some more information to this dump that helps
   with debugging.
 
 - Add more timestamp debugging checks (only triggers when the config is enabled)
 
 - Increase the trace_seq iterator to 2 page sizes.
 
 - Allow strings written into tracefs_marker to be larger. Up to just under
   2 page sizes (based on what trace_seq can hold).
 
 - Increase the trace_maker_raw write to be as big as a sub-buffer can hold.
 
 - Remove 32 bit time stamp logic, now that the rb_time_cmpxchg() has been
   removed.
 
 - More selftests were added.
 
 - Some code clean ups as well.
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Merge tag 'trace-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull tracing updates from Steven Rostedt:

 - Allow kernel trace instance creation to specify what events are
   created

   Inside the kernel, a subsystem may create a tracing instance that it
   can use to send events to user space. This sub-system may not care
   about the thousands of events that exist in eventfs. Allow the
   sub-system to specify what sub-systems of events it cares about, and
   only those events are exposed to this instance.

 - Allow the ring buffer to be broken up into bigger sub-buffers than
   just the architecture page size.

   A new tracefs file called "buffer_subbuf_size_kb" is created. The
   user can now specify a minimum size the sub-buffer may be in
   kilobytes. Note, that the implementation currently make the
   sub-buffer size a power of 2 pages (1, 2, 4, 8, 16, ...) but the user
   only writes in kilobyte size, and the sub-buffer will be updated to
   the next size that it will can accommodate it. If the user writes in
   10, it will change the size to be 4 pages on x86 (16K), as that is
   the next available size that can hold 10K pages.

 - Update the debug output when a corrupt time is detected in the ring
   buffer. If the ring buffer detects inconsistent timestamps, there's a
   debug config options that will dump the contents of the meta data of
   the sub-buffer that is used for debugging. Add some more information
   to this dump that helps with debugging.

 - Add more timestamp debugging checks (only triggers when the config is
   enabled)

 - Increase the trace_seq iterator to 2 page sizes.

 - Allow strings written into tracefs_marker to be larger. Up to just
   under 2 page sizes (based on what trace_seq can hold).

 - Increase the trace_maker_raw write to be as big as a sub-buffer can
   hold.

 - Remove 32 bit time stamp logic, now that the rb_time_cmpxchg() has
   been removed.

 - More selftests were added.

 - Some code clean ups as well.

* tag 'trace-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (29 commits)
  ring-buffer: Remove stale comment from ring_buffer_size()
  tracing histograms: Simplify parse_actions() function
  tracing/selftests: Remove exec permissions from trace_marker.tc test
  ring-buffer: Use subbuf_order for buffer page masking
  tracing: Update subbuffer with kilobytes not page order
  ringbuffer/selftest: Add basic selftest to test changing subbuf order
  ring-buffer: Add documentation on the buffer_subbuf_order file
  ring-buffer: Just update the subbuffers when changing their allocation order
  ring-buffer: Keep the same size when updating the order
  tracing: Stop the tracing while changing the ring buffer subbuf size
  tracing: Update snapshot order along with main buffer order
  ring-buffer: Make sure the spare sub buffer used for reads has same size
  ring-buffer: Do no swap cpu buffers if order is different
  ring-buffer: Clear pages on error in ring_buffer_subbuf_order_set() failure
  ring-buffer: Read and write to ring buffers with custom sub buffer size
  ring-buffer: Set new size of the ring buffer sub page
  ring-buffer: Add interface for configuring trace sub buffer size
  ring-buffer: Page size per ring buffer
  ring-buffer: Have ring_buffer_print_page_header() be able to access ring_buffer_iter
  ring-buffer: Check if absolute timestamp goes backwards
  ...
2024-01-18 14:35:29 -08:00
Linus Torvalds
ba7dd8570d - Clean up selftest compilation issues, mostly from non-gcc compilers
- Avoid building selftests when not on x86
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Merge tag 'x86_sgx_for_6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 SGX updates from Dave Hansen:
 "This time, these are entirely confined to SGX selftests fixes.

  The mini SGX enclave built by the selftests has garnered some
  attention because it stands alone and does not need the sizable
  infrastructure of the official SGX SDK. I think that's why folks are
  suddently interested in cleaning it up.

   - Clean up selftest compilation issues, mostly from non-gcc compilers

   - Avoid building selftests when not on x86"

* tag 'x86_sgx_for_6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  selftests/sgx: Skip non X86_64 platform
  selftests/sgx: Remove incomplete ABI sanitization code in test enclave
  selftests/sgx: Discard unsupported ELF sections
  selftests/sgx: Ensure expected location of test enclave buffer
  selftests/sgx: Ensure test enclave buffer is entirely preserved
  selftests/sgx: Fix linker script asserts
  selftests/sgx: Handle relocations in test enclave
  selftests/sgx: Produce static-pie executable for test enclave
  selftests/sgx: Remove redundant enclave base address save/restore
  selftests/sgx: Specify freestanding environment for enclave compilation
  selftests/sgx: Separate linker options
  selftests/sgx: Include memory clobber for inline asm in test enclave
  selftests/sgx: Fix uninitialized pointer dereferences in encl_get_entry
  selftests/sgx: Fix uninitialized pointer dereference in error path
2024-01-18 13:23:53 -08:00
Jakub Kicinski
4349efc52b bpf-for-netdev
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Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

Daniel Borkmann says:

====================
pull-request: bpf 2024-01-18

We've added 10 non-merge commits during the last 5 day(s) which contain
a total of 12 files changed, 806 insertions(+), 51 deletions(-).

The main changes are:

1) Fix an issue in bpf_iter_udp under backward progress which prevents
   user space process from finishing iteration, from Martin KaFai Lau.

2) Fix BPF verifier to reject variable offset alu on registers with a type
   of PTR_TO_FLOW_KEYS to prevent oob access, from Hao Sun.

3) Follow up fixes for kernel- and libbpf-side logic around handling
   arg:ctx tagged arguments of BPF global subprogs, from Andrii Nakryiko.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
  libbpf: warn on unexpected __arg_ctx type when rewriting BTF
  selftests/bpf: add tests confirming type logic in kernel for __arg_ctx
  bpf: enforce types for __arg_ctx-tagged arguments in global subprogs
  bpf: extract bpf_ctx_convert_map logic and make it more reusable
  libbpf: feature-detect arg:ctx tag support in kernel
  selftests/bpf: Add test for alu on PTR_TO_FLOW_KEYS
  bpf: Reject variable offset alu on PTR_TO_FLOW_KEYS
  selftests/bpf: Test udp and tcp iter batching
  bpf: Avoid iter->offset making backward progress in bpf_iter_udp
  bpf: iter_udp: Retry with a larger batch size without going back to the previous bucket
====================

Link: https://lore.kernel.org/r/20240118153936.11769-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-18 09:54:24 -08:00
Amit Cohen
b34f4de6d3 selftests: mlxsw: qos_pfc: Adjust the test to support 8 lanes
'qos_pfc' test checks PFC behavior. The idea is to limit the traffic
using a shaper somewhere in the flow of the packets. In this area, the
buffer is smaller than the buffer at the beginning of the flow, so it fills
up until there is no more space left. The test configures there PFC
which is supposed to notice that the headroom is filling up and send PFC
Xoff to indicate the transmitter to stop sending traffic for the priorities
sharing this PG.

The Xon/Xoff threshold is auto-configured and always equal to
2*(MTU rounded up to cell size). Even after sending the PFC Xoff packet,
traffic will keep arriving until the transmitter receives and processes
the PFC packet. This amount of traffic is known as the PFC delay allowance.

Currently the buffer for the delay traffic is configured as 100KB. The
MTU in the test is 10KB, therefore the threshold for Xoff is about 20KB.
This allows 80KB extra to be stored in this buffer.

8-lane ports use two buffers among which the configured buffer is split,
the Xoff threshold then applies to each buffer in parallel.

The test does not take into account the behavior of 8-lane ports, when the
ports are configured to 400Gbps with 8 lanes or 800Gbps with 8 lanes,
packets are dropped and the test fails.

Check if the relevant ports use 8 lanes, in such case double the size of
the buffer, as the headroom is split half-half.

Cc: Shuah Khan <shuah@kernel.org>
Fixes: bfa804784e ("selftests: mlxsw: Add a PFC test")
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Link: https://lore.kernel.org/r/23ff11b7dff031eb04a41c0f5254a2b636cd8ebb.1705502064.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-18 09:48:09 -08:00
Amit Cohen
40cc674baf selftests: mlxsw: qos_pfc: Remove wrong description
In the diagram of the topology, $swp3 and $swp4 are described as 1Gbps
ports. This is wrong information, the test does not configure such speed.

Cc: Shuah Khan <shuah@kernel.org>
Fixes: bfa804784e ("selftests: mlxsw: Add a PFC test")
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Link: https://lore.kernel.org/r/0087e2d416aff7e444d15f7c2958fc1d438dc27e.1705502064.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-18 09:48:09 -08:00
Ido Schimmel
483ae90d8f mlxsw: spectrum_acl_tcam: Fix stack corruption
When tc filters are first added to a net device, the corresponding local
port gets bound to an ACL group in the device. The group contains a list
of ACLs. In turn, each ACL points to a different TCAM region where the
filters are stored. During forwarding, the ACLs are sequentially
evaluated until a match is found.

One reason to place filters in different regions is when they are added
with decreasing priorities and in an alternating order so that two
consecutive filters can never fit in the same region because of their
key usage.

In Spectrum-2 and newer ASICs the firmware started to report that the
maximum number of ACLs in a group is more than 16, but the layout of the
register that configures ACL groups (PAGT) was not updated to account
for that. It is therefore possible to hit stack corruption [1] in the
rare case where more than 16 ACLs in a group are required.

Fix by limiting the maximum ACL group size to the minimum between what
the firmware reports and the maximum ACLs that fit in the PAGT register.

Add a test case to make sure the machine does not crash when this
condition is hit.

[1]
Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: mlxsw_sp_acl_tcam_group_update+0x116/0x120
[...]
 dump_stack_lvl+0x36/0x50
 panic+0x305/0x330
 __stack_chk_fail+0x15/0x20
 mlxsw_sp_acl_tcam_group_update+0x116/0x120
 mlxsw_sp_acl_tcam_group_region_attach+0x69/0x110
 mlxsw_sp_acl_tcam_vchunk_get+0x492/0xa20
 mlxsw_sp_acl_tcam_ventry_add+0x25/0xe0
 mlxsw_sp_acl_rule_add+0x47/0x240
 mlxsw_sp_flower_replace+0x1a9/0x1d0
 tc_setup_cb_add+0xdc/0x1c0
 fl_hw_replace_filter+0x146/0x1f0
 fl_change+0xc17/0x1360
 tc_new_tfilter+0x472/0xb90
 rtnetlink_rcv_msg+0x313/0x3b0
 netlink_rcv_skb+0x58/0x100
 netlink_unicast+0x244/0x390
 netlink_sendmsg+0x1e4/0x440
 ____sys_sendmsg+0x164/0x260
 ___sys_sendmsg+0x9a/0xe0
 __sys_sendmsg+0x7a/0xc0
 do_syscall_64+0x40/0xe0
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

Fixes: c3ab435466 ("mlxsw: spectrum: Extend to support Spectrum-2 ASIC")
Reported-by: Orel Hagag <orelh@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Link: https://lore.kernel.org/r/2d91c89afba59c22587b444994ae419dbea8d876.1705502064.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-18 09:48:08 -08:00
Amit Cohen
6d6eeabcfa mlxsw: spectrum_acl_erp: Fix error flow of pool allocation failure
Lately, a bug was found when many TC filters are added - at some point,
several bugs are printed to dmesg [1] and the switch is crashed with
segmentation fault.

The issue starts when gen_pool_free() fails because of unexpected
behavior - a try to free memory which is already freed, this leads to BUG()
call which crashes the switch and makes many other bugs.

Trying to track down the unexpected behavior led to a bug in eRP code. The
function mlxsw_sp_acl_erp_table_alloc() gets a pointer to the allocated
index, sets the value and returns an error code. When gen_pool_alloc()
fails it returns address 0, we track it and return -ENOBUFS outside, BUT
the call for gen_pool_alloc() already override the index in erp_table
structure. This is a problem when such allocation is done as part of
table expansion. This is not a new table, which will not be used in case
of allocation failure. We try to expand eRP table and override the
current index (non-zero) with zero. Then, it leads to an unexpected
behavior when address 0 is freed twice. Note that address 0 is valid in
erp_table->base_index and indeed other tables use it.

gen_pool_alloc() fails in case that there is no space left in the
pre-allocated pool, in our case, the pool is limited to
ACL_MAX_ERPT_BANK_SIZE, which is read from hardware. When more than max
erp entries are required, we exceed the limit and return an error, this
error leads to "Failed to migrate vregion" print.

Fix this by changing erp_table->base_index only in case of a successful
allocation.

Add a test case for such a scenario. Without this fix it causes
segmentation fault:

$ TESTS="max_erp_entries_test" ./tc_flower.sh
./tc_flower.sh: line 988:  1560 Segmentation fault      tc filter del dev $h2 ingress chain $i protocol ip pref $i handle $j flower &>/dev/null

[1]:
kernel BUG at lib/genalloc.c:508!
invalid opcode: 0000 [#1] PREEMPT SMP
CPU: 6 PID: 3531 Comm: tc Not tainted 6.7.0-rc5-custom-ga6893f479f5e #1
Hardware name: Mellanox Technologies Ltd. MSN4700/VMOD0010, BIOS 5.11 07/12/2021
RIP: 0010:gen_pool_free_owner+0xc9/0xe0
...
Call Trace:
 <TASK>
 __mlxsw_sp_acl_erp_table_other_dec+0x70/0xa0 [mlxsw_spectrum]
 mlxsw_sp_acl_erp_mask_destroy+0xf5/0x110 [mlxsw_spectrum]
 objagg_obj_root_destroy+0x18/0x80 [objagg]
 objagg_obj_destroy+0x12c/0x130 [objagg]
 mlxsw_sp_acl_erp_mask_put+0x37/0x50 [mlxsw_spectrum]
 mlxsw_sp_acl_ctcam_region_entry_remove+0x74/0xa0 [mlxsw_spectrum]
 mlxsw_sp_acl_ctcam_entry_del+0x1e/0x40 [mlxsw_spectrum]
 mlxsw_sp_acl_tcam_ventry_del+0x78/0xd0 [mlxsw_spectrum]
 mlxsw_sp_flower_destroy+0x4d/0x70 [mlxsw_spectrum]
 mlxsw_sp_flow_block_cb+0x73/0xb0 [mlxsw_spectrum]
 tc_setup_cb_destroy+0xc1/0x180
 fl_hw_destroy_filter+0x94/0xc0 [cls_flower]
 __fl_delete+0x1ac/0x1c0 [cls_flower]
 fl_destroy+0xc2/0x150 [cls_flower]
 tcf_proto_destroy+0x1a/0xa0
...
mlxsw_spectrum3 0000:07:00.0: Failed to migrate vregion
mlxsw_spectrum3 0000:07:00.0: Failed to migrate vregion

Fixes: f465261aa1 ("mlxsw: spectrum_acl: Implement common eRP core")
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Link: https://lore.kernel.org/r/4cfca254dfc0e5d283974801a24371c7b6db5989.1705502064.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-18 09:48:08 -08:00
Benjamin Poirier
dd2d40acdb selftests: bonding: Add more missing config options
As a followup to commit 03fb8565c8 ("selftests: bonding: add missing
build configs"), add more networking-specific config options which are
needed for bonding tests.

For testing, I used the minimal config generated by virtme-ng and I added
the options in the config file. All bonding tests passed.

Fixes: bbb774d921 ("net: Add tests for bonding and team address list management") # for ipv6
Fixes: 6cbe791c0f ("kselftest: bonding: add num_grat_arp test") # for tc options
Fixes: 222c94ec0a ("selftests: bonding: add tests for ether type changes") # for nlmon
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Benjamin Poirier <bpoirier@nvidia.com>
Link: https://lore.kernel.org/r/20240116154926.202164-1-bpoirier@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-01-18 11:59:26 +01:00
Jakub Kicinski
39369c9a6e selftests: netdevsim: add a config file
netdevsim tests aren't very well integrated with kselftest,
which has its advantages and disadvantages. But regardless
of the intended integration - a config file to know what kernel
to build is very useful, add one.

Fixes: fc4c93f145 ("selftests: add basic netdevsim devlink flash testing")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/r/20240116154311.1945801-1-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-01-18 11:51:02 +01:00
Andrii Nakryiko
76ec90a996 libbpf: warn on unexpected __arg_ctx type when rewriting BTF
On kernel that don't support arg:ctx tag, before adjusting global
subprog BTF information to match kernel's expected canonical type names,
make sure that types used by user are meaningful, and if not, warn and
don't do BTF adjustments.

This is similar to checks that kernel performs, but narrower in scope,
as only a small subset of BPF program types can be accommodated by
libbpf using canonical type names.

Libbpf unconditionally allows `struct pt_regs *` for perf_event program
types, unlike kernel, which supports that conditionally on architecture.
This is done to keep things simple and not cause unnecessary false
positives. This seems like a minor and harmless deviation, which in
real-world programs will be caught by kernels with arg:ctx tag support
anyways. So KISS principle.

This logic is hard to test (especially on latest kernels), so manual
testing was performed instead. Libbpf emitted the following warning for
perf_event program with wrong context argument type:

  libbpf: prog 'arg_tag_ctx_perf': subprog 'subprog_ctx_tag' arg#0 is expected to be of `struct bpf_perf_event_data *` type

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20240118033143.3384355-6-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2024-01-17 20:20:06 -08:00
Andrii Nakryiko
989410cde8 selftests/bpf: add tests confirming type logic in kernel for __arg_ctx
Add a bunch of global subprogs across variety of program types to
validate expected kernel type enforcement logic for __arg_ctx arguments.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20240118033143.3384355-5-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2024-01-17 20:20:06 -08:00
Andrii Nakryiko
01b55f4f0c libbpf: feature-detect arg:ctx tag support in kernel
Add feature detector of kernel-side arg:ctx (__arg_ctx) tag support. If
this is detected, libbpf will avoid doing any __arg_ctx-related BTF
rewriting and checks in favor of letting kernel handle this completely.

test_global_funcs/ctx_arg_rewrite subtest is adjusted to do the same
feature detection (albeit in much simpler, though round-about and
inefficient, way), and skip the tests. This is done to still be able to
execute this test on older kernels (like in libbpf CI).

Note, BPF token series ([0]) does a major refactor and code moving of
libbpf-internal feature detection "framework", so to avoid unnecessary
conflicts we keep newly added feature detection stand-alone with ad-hoc
result caching. Once things settle, there will be a small follow up to
re-integrate everything back and move code into its final place in
newly-added (by BPF token series) features.c file.

  [0] https://patchwork.kernel.org/project/netdevbpf/list/?series=814209&state=*

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20240118033143.3384355-2-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2024-01-17 20:20:05 -08:00
Andrew Jones
0de65288d7
RISC-V: selftests: cbo: Ensure asm operands match constraints
The 'i' constraint expects a constant operand, which fn and its
constant derivative MK_CBO(fn) are, but passing fn through a function
as a parameter and using a local variable for MK_CBO(fn) allow the
compiler to lose sight of that when no optimization is done. Use
a macro instead of a function and skip the local variable to ensure
the compiler uses constants, matching the asm constraints.

Reported-by: Yunhui Cui <cuiyunhui@bytedance.com>
Closes: https://lore.kernel.org/all/20240117082514.42967-1-cuiyunhui@bytedance.com
Fixes: a29e2a48af ("RISC-V: selftests: Add CBO tests")
Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20240117130933.57514-2-ajones@ventanamicro.com
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-17 17:46:55 -08:00
Linus Torvalds
296455ade1 Char/Misc and other Driver changes for 6.8-rc1
Here is the big set of char/misc and other driver subsystem changes for
 6.8-rc1.  Lots of stuff in here, but first off, you will get a merge
 conflict in drivers/android/binder_alloc.c when merging this tree due to
 changing coming in through the -mm tree.
 
 The resolution of the merge issue can be found here:
 	https://lore.kernel.org/r/20231207134213.25631ae9@canb.auug.org.au
 or in a simpler patch form in that thread:
 	https://lore.kernel.org/r/ZXHzooF07LfQQYiE@google.com
 
 If there are issues with the merge of this file, please let me know.
 
 Other than lots of binder driver changes (as you can see by the merge
 conflicts) included in here are:
  - lots of iio driver updates and additions
  - spmi driver updates
  - eeprom driver updates
  - firmware driver updates
  - ocxl driver updates
  - mhi driver updates
  - w1 driver updates
  - nvmem driver updates
  - coresight driver updates
  - platform driver remove callback api changes
  - tags.sh script updates
  - bus_type constant marking cleanups
  - lots of other small driver updates
 
 All of these have been in linux-next for a while with no reported issues
 (other than the binder merge conflict.)
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc and other driver updates from Greg KH:
 "Here is the big set of char/misc and other driver subsystem changes
  for 6.8-rc1.

  Other than lots of binder driver changes (as you can see by the merge
  conflicts) included in here are:

   - lots of iio driver updates and additions

   - spmi driver updates

   - eeprom driver updates

   - firmware driver updates

   - ocxl driver updates

   - mhi driver updates

   - w1 driver updates

   - nvmem driver updates

   - coresight driver updates

   - platform driver remove callback api changes

   - tags.sh script updates

   - bus_type constant marking cleanups

   - lots of other small driver updates

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (341 commits)
  android: removed duplicate linux/errno
  uio: Fix use-after-free in uio_open
  drivers: soc: xilinx: add check for platform
  firmware: xilinx: Export function to use in other module
  scripts/tags.sh: remove find_sources
  scripts/tags.sh: use -n to test archinclude
  scripts/tags.sh: add local annotation
  scripts/tags.sh: use more portable -path instead of -wholename
  scripts/tags.sh: Update comment (addition of gtags)
  firmware: zynqmp: Convert to platform remove callback returning void
  firmware: turris-mox-rwtm: Convert to platform remove callback returning void
  firmware: stratix10-svc: Convert to platform remove callback returning void
  firmware: stratix10-rsu: Convert to platform remove callback returning void
  firmware: raspberrypi: Convert to platform remove callback returning void
  firmware: qemu_fw_cfg: Convert to platform remove callback returning void
  firmware: mtk-adsp-ipc: Convert to platform remove callback returning void
  firmware: imx-dsp: Convert to platform remove callback returning void
  firmware: coreboot_table: Convert to platform remove callback returning void
  firmware: arm_scpi: Convert to platform remove callback returning void
  firmware: arm_scmi: Convert to platform remove callback returning void
  ...
2024-01-17 16:47:17 -08:00
Linus Torvalds
09d1c6a80f Generic:
- Use memdup_array_user() to harden against overflow.
 
 - Unconditionally advertise KVM_CAP_DEVICE_CTRL for all architectures.
 
 - Clean up Kconfigs that all KVM architectures were selecting
 
 - New functionality around "guest_memfd", a new userspace API that
   creates an anonymous file and returns a file descriptor that refers
   to it.  guest_memfd files are bound to their owning virtual machine,
   cannot be mapped, read, or written by userspace, and cannot be resized.
   guest_memfd files do however support PUNCH_HOLE, which can be used to
   switch a memory area between guest_memfd and regular anonymous memory.
 
 - New ioctl KVM_SET_MEMORY_ATTRIBUTES allowing userspace to specify
   per-page attributes for a given page of guest memory; right now the
   only attribute is whether the guest expects to access memory via
   guest_memfd or not, which in Confidential SVMs backed by SEV-SNP,
   TDX or ARM64 pKVM is checked by firmware or hypervisor that guarantees
   confidentiality (AMD PSP, Intel TDX module, or EL2 in the case of pKVM).
 
 x86:
 
 - Support for "software-protected VMs" that can use the new guest_memfd
   and page attributes infrastructure.  This is mostly useful for testing,
   since there is no pKVM-like infrastructure to provide a meaningfully
   reduced TCB.
 
 - Fix a relatively benign off-by-one error when splitting huge pages during
   CLEAR_DIRTY_LOG.
 
 - Fix a bug where KVM could incorrectly test-and-clear dirty bits in non-leaf
   TDP MMU SPTEs if a racing thread replaces a huge SPTE with a non-huge SPTE.
 
 - Use more generic lockdep assertions in paths that don't actually care
   about whether the caller is a reader or a writer.
 
 - let Xen guests opt out of having PV clock reported as "based on a stable TSC",
   because some of them don't expect the "TSC stable" bit (added to the pvclock
   ABI by KVM, but never set by Xen) to be set.
 
 - Revert a bogus, made-up nested SVM consistency check for TLB_CONTROL.
 
 - Advertise flush-by-ASID support for nSVM unconditionally, as KVM always
   flushes on nested transitions, i.e. always satisfies flush requests.  This
   allows running bleeding edge versions of VMware Workstation on top of KVM.
 
 - Sanity check that the CPU supports flush-by-ASID when enabling SEV support.
 
 - On AMD machines with vNMI, always rely on hardware instead of intercepting
   IRET in some cases to detect unmasking of NMIs
 
 - Support for virtualizing Linear Address Masking (LAM)
 
 - Fix a variety of vPMU bugs where KVM fail to stop/reset counters and other state
   prior to refreshing the vPMU model.
 
 - Fix a double-overflow PMU bug by tracking emulated counter events using a
   dedicated field instead of snapshotting the "previous" counter.  If the
   hardware PMC count triggers overflow that is recognized in the same VM-Exit
   that KVM manually bumps an event count, KVM would pend PMIs for both the
   hardware-triggered overflow and for KVM-triggered overflow.
 
 - Turn off KVM_WERROR by default for all configs so that it's not
   inadvertantly enabled by non-KVM developers, which can be problematic for
   subsystems that require no regressions for W=1 builds.
 
 - Advertise all of the host-supported CPUID bits that enumerate IA32_SPEC_CTRL
   "features".
 
 - Don't force a masterclock update when a vCPU synchronizes to the current TSC
   generation, as updating the masterclock can cause kvmclock's time to "jump"
   unexpectedly, e.g. when userspace hotplugs a pre-created vCPU.
 
 - Use RIP-relative address to read kvm_rebooting in the VM-Enter fault paths,
   partly as a super minor optimization, but mostly to make KVM play nice with
   position independent executable builds.
 
 - Guard KVM-on-HyperV's range-based TLB flush hooks with an #ifdef on
   CONFIG_HYPERV as a minor optimization, and to self-document the code.
 
 - Add CONFIG_KVM_HYPERV to allow disabling KVM support for HyperV "emulation"
   at build time.
 
 ARM64:
 
 - LPA2 support, adding 52bit IPA/PA capability for 4kB and 16kB
   base granule sizes. Branch shared with the arm64 tree.
 
 - Large Fine-Grained Trap rework, bringing some sanity to the
   feature, although there is more to come. This comes with
   a prefix branch shared with the arm64 tree.
 
 - Some additional Nested Virtualization groundwork, mostly
   introducing the NV2 VNCR support and retargetting the NV
   support to that version of the architecture.
 
 - A small set of vgic fixes and associated cleanups.
 
 Loongarch:
 
 - Optimization for memslot hugepage checking
 
 - Cleanup and fix some HW/SW timer issues
 
 - Add LSX/LASX (128bit/256bit SIMD) support
 
 RISC-V:
 
 - KVM_GET_REG_LIST improvement for vector registers
 
 - Generate ISA extension reg_list using macros in get-reg-list selftest
 
 - Support for reporting steal time along with selftest
 
 s390:
 
 - Bugfixes
 
 Selftests:
 
 - Fix an annoying goof where the NX hugepage test prints out garbage
   instead of the magic token needed to run the test.
 
 - Fix build errors when a header is delete/moved due to a missing flag
   in the Makefile.
 
 - Detect if KVM bugged/killed a selftest's VM and print out a helpful
   message instead of complaining that a random ioctl() failed.
 
 - Annotate the guest printf/assert helpers with __printf(), and fix the
   various bugs that were lurking due to lack of said annotation.
 
 There are two non-KVM patches buried in the middle of guest_memfd support:
 
   fs: Rename anon_inode_getfile_secure() and anon_inode_getfd_secure()
   mm: Add AS_UNMOVABLE to mark mapping as completely unmovable
 
 The first is small and mostly suggested-by Christian Brauner; the second
 a bit less so but it was written by an mm person (Vlastimil Babka).
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm updates from Paolo Bonzini:
 "Generic:

   - Use memdup_array_user() to harden against overflow.

   - Unconditionally advertise KVM_CAP_DEVICE_CTRL for all
     architectures.

   - Clean up Kconfigs that all KVM architectures were selecting

   - New functionality around "guest_memfd", a new userspace API that
     creates an anonymous file and returns a file descriptor that refers
     to it. guest_memfd files are bound to their owning virtual machine,
     cannot be mapped, read, or written by userspace, and cannot be
     resized. guest_memfd files do however support PUNCH_HOLE, which can
     be used to switch a memory area between guest_memfd and regular
     anonymous memory.

   - New ioctl KVM_SET_MEMORY_ATTRIBUTES allowing userspace to specify
     per-page attributes for a given page of guest memory; right now the
     only attribute is whether the guest expects to access memory via
     guest_memfd or not, which in Confidential SVMs backed by SEV-SNP,
     TDX or ARM64 pKVM is checked by firmware or hypervisor that
     guarantees confidentiality (AMD PSP, Intel TDX module, or EL2 in
     the case of pKVM).

  x86:

   - Support for "software-protected VMs" that can use the new
     guest_memfd and page attributes infrastructure. This is mostly
     useful for testing, since there is no pKVM-like infrastructure to
     provide a meaningfully reduced TCB.

   - Fix a relatively benign off-by-one error when splitting huge pages
     during CLEAR_DIRTY_LOG.

   - Fix a bug where KVM could incorrectly test-and-clear dirty bits in
     non-leaf TDP MMU SPTEs if a racing thread replaces a huge SPTE with
     a non-huge SPTE.

   - Use more generic lockdep assertions in paths that don't actually
     care about whether the caller is a reader or a writer.

   - let Xen guests opt out of having PV clock reported as "based on a
     stable TSC", because some of them don't expect the "TSC stable" bit
     (added to the pvclock ABI by KVM, but never set by Xen) to be set.

   - Revert a bogus, made-up nested SVM consistency check for
     TLB_CONTROL.

   - Advertise flush-by-ASID support for nSVM unconditionally, as KVM
     always flushes on nested transitions, i.e. always satisfies flush
     requests. This allows running bleeding edge versions of VMware
     Workstation on top of KVM.

   - Sanity check that the CPU supports flush-by-ASID when enabling SEV
     support.

   - On AMD machines with vNMI, always rely on hardware instead of
     intercepting IRET in some cases to detect unmasking of NMIs

   - Support for virtualizing Linear Address Masking (LAM)

   - Fix a variety of vPMU bugs where KVM fail to stop/reset counters
     and other state prior to refreshing the vPMU model.

   - Fix a double-overflow PMU bug by tracking emulated counter events
     using a dedicated field instead of snapshotting the "previous"
     counter. If the hardware PMC count triggers overflow that is
     recognized in the same VM-Exit that KVM manually bumps an event
     count, KVM would pend PMIs for both the hardware-triggered overflow
     and for KVM-triggered overflow.

   - Turn off KVM_WERROR by default for all configs so that it's not
     inadvertantly enabled by non-KVM developers, which can be
     problematic for subsystems that require no regressions for W=1
     builds.

   - Advertise all of the host-supported CPUID bits that enumerate
     IA32_SPEC_CTRL "features".

   - Don't force a masterclock update when a vCPU synchronizes to the
     current TSC generation, as updating the masterclock can cause
     kvmclock's time to "jump" unexpectedly, e.g. when userspace
     hotplugs a pre-created vCPU.

   - Use RIP-relative address to read kvm_rebooting in the VM-Enter
     fault paths, partly as a super minor optimization, but mostly to
     make KVM play nice with position independent executable builds.

   - Guard KVM-on-HyperV's range-based TLB flush hooks with an #ifdef on
     CONFIG_HYPERV as a minor optimization, and to self-document the
     code.

   - Add CONFIG_KVM_HYPERV to allow disabling KVM support for HyperV
     "emulation" at build time.

  ARM64:

   - LPA2 support, adding 52bit IPA/PA capability for 4kB and 16kB base
     granule sizes. Branch shared with the arm64 tree.

   - Large Fine-Grained Trap rework, bringing some sanity to the
     feature, although there is more to come. This comes with a prefix
     branch shared with the arm64 tree.

   - Some additional Nested Virtualization groundwork, mostly
     introducing the NV2 VNCR support and retargetting the NV support to
     that version of the architecture.

   - A small set of vgic fixes and associated cleanups.

  Loongarch:

   - Optimization for memslot hugepage checking

   - Cleanup and fix some HW/SW timer issues

   - Add LSX/LASX (128bit/256bit SIMD) support

  RISC-V:

   - KVM_GET_REG_LIST improvement for vector registers

   - Generate ISA extension reg_list using macros in get-reg-list
     selftest

   - Support for reporting steal time along with selftest

  s390:

   - Bugfixes

  Selftests:

   - Fix an annoying goof where the NX hugepage test prints out garbage
     instead of the magic token needed to run the test.

   - Fix build errors when a header is delete/moved due to a missing
     flag in the Makefile.

   - Detect if KVM bugged/killed a selftest's VM and print out a helpful
     message instead of complaining that a random ioctl() failed.

   - Annotate the guest printf/assert helpers with __printf(), and fix
     the various bugs that were lurking due to lack of said annotation"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (185 commits)
  x86/kvm: Do not try to disable kvmclock if it was not enabled
  KVM: x86: add missing "depends on KVM"
  KVM: fix direction of dependency on MMU notifiers
  KVM: introduce CONFIG_KVM_COMMON
  KVM: arm64: Add missing memory barriers when switching to pKVM's hyp pgd
  KVM: arm64: vgic-its: Avoid potential UAF in LPI translation cache
  RISC-V: KVM: selftests: Add get-reg-list test for STA registers
  RISC-V: KVM: selftests: Add steal_time test support
  RISC-V: KVM: selftests: Add guest_sbi_probe_extension
  RISC-V: KVM: selftests: Move sbi_ecall to processor.c
  RISC-V: KVM: Implement SBI STA extension
  RISC-V: KVM: Add support for SBI STA registers
  RISC-V: KVM: Add support for SBI extension registers
  RISC-V: KVM: Add SBI STA info to vcpu_arch
  RISC-V: KVM: Add steal-update vcpu request
  RISC-V: KVM: Add SBI STA extension skeleton
  RISC-V: paravirt: Implement steal-time support
  RISC-V: Add SBI STA extension definitions
  RISC-V: paravirt: Add skeleton for pv-time support
  RISC-V: KVM: Fix indentation in kvm_riscv_vcpu_set_reg_csr()
  ...
2024-01-17 13:03:37 -08:00
Linus Torvalds
4331f07026 RISC-V Patches for the 6.8 Merge Window, Part 1
* Support for many new extensions in hwprobe, along with a handful of
   cleanups.
 * Various cleanups to our page table handling code, so we alwayse use
   {READ,WRITE}_ONCE.
 * Support for the which-cpus flavor of hwprobe.
 * Support for XIP kernels has been resurrected.
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Merge tag 'riscv-for-linus-6.8-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V updates from Palmer Dabbelt:

 - Support for many new extensions in hwprobe, along with a handful of
   cleanups

 - Various cleanups to our page table handling code, so we alwayse use
   {READ,WRITE}_ONCE

 - Support for the which-cpus flavor of hwprobe

 - Support for XIP kernels has been resurrected

* tag 'riscv-for-linus-6.8-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (52 commits)
  riscv: hwprobe: export Zicond extension
  riscv: hwprobe: export Zacas ISA extension
  riscv: add ISA extension parsing for Zacas
  dt-bindings: riscv: add Zacas ISA extension description
  riscv: hwprobe: export Ztso ISA extension
  riscv: add ISA extension parsing for Ztso
  use linux/export.h rather than asm-generic/export.h
  riscv: Remove SHADOW_OVERFLOW_STACK_SIZE macro
  riscv; fix __user annotation in save_v_state()
  riscv: fix __user annotation in traps_misaligned.c
  riscv: Select ARCH_WANTS_NO_INSTR
  riscv: Remove obsolete rv32_defconfig file
  riscv: Allow disabling of BUILTIN_DTB for XIP
  riscv: Fixed wrong register in XIP_FIXUP_FLASH_OFFSET macro
  riscv: Make XIP bootable again
  riscv: Fix set_direct_map_default_noflush() to reset _PAGE_EXEC
  riscv: Fix module_alloc() that did not reset the linear mapping permissions
  riscv: Fix wrong usage of lm_alias() when splitting a huge linear mapping
  riscv: Check if the code to patch lies in the exit section
  riscv: Use the same CPU operations for all CPUs
  ...
2024-01-17 10:50:46 -08:00
Linus Torvalds
7f5e47f785 17 hotfixes. 10 address post-6.7 issues and the other 7 are cc:stable.
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Merge tag 'mm-hotfixes-stable-2024-01-12-16-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull misc hotfixes from Andrew Morton:
 "For once not mostly MM-related.

  17 hotfixes. 10 address post-6.7 issues and the other 7 are cc:stable"

* tag 'mm-hotfixes-stable-2024-01-12-16-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  userfaultfd: avoid huge_zero_page in UFFDIO_MOVE
  MAINTAINERS: add entry for shrinker
  selftests: mm: hugepage-vmemmap fails on 64K page size systems
  mm/memory_hotplug: fix memmap_on_memory sysfs value retrieval
  mailmap: switch email for Tanzir Hasan
  mailmap: add old address mappings for Randy
  kernel/crash_core.c: make __crash_hotplug_lock static
  efi: disable mirror feature during crashkernel
  kexec: do syscore_shutdown() in kernel_kexec
  mailmap: update entry for Manivannan Sadhasivam
  fs/proc/task_mmu: move mmu notification mechanism inside mm lock
  mm: zswap: switch maintainers to recently active developers and reviewers
  scripts/decode_stacktrace.sh: optionally use LLVM utilities
  kasan: avoid resetting aux_lock
  lib/Kconfig.debug: disable CONFIG_DEBUG_INFO_BTF for Hexagon
  MAINTAINERS: update LTP maintainers
  kdump: defer the insertion of crashkernel resources
2024-01-17 09:31:36 -08:00
Nicolas Dichtel
e9ce7ededf selftests: rtnetlink: use setup_ns in bonding test
This is a follow-up of commit a159cbe81d ("selftests: rtnetlink: check
enslaving iface in a bond") after the merge of net-next into net.

The goal is to follow the new convention,
see commit d3b6b11161 ("selftests/net: convert rtnetlink.sh to run it in
unique namespace") for more details.

Let's use also the generic dummy name instead of defining a new one.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Reviewed-by: Hangbin Liu <liuhangbin@gmail.com>
Link: https://lore.kernel.org/r/20240115135922.3662648-1-nicolas.dichtel@6wind.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-16 17:49:54 -08:00
Hao Sun
33772ff3b8 selftests/bpf: Add test for alu on PTR_TO_FLOW_KEYS
Add a test case for PTR_TO_FLOW_KEYS alu. Testing if alu with variable
offset on flow_keys is rejected. For the fixed offset success case, we
already have C code coverage to verify (e.g. via bpf_flow.c).

Signed-off-by: Hao Sun <sunhao.th@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/bpf/20240115082028.9992-2-sunhao.th@gmail.com
2024-01-16 17:12:48 +01:00
Jakub Kicinski
03fb8565c8 selftests: bonding: add missing build configs
bonding tests also try to create bridge, veth and dummy
interfaces. These are not currently listed in config.

Fixes: bbb774d921 ("net: Add tests for bonding and team address list management")
Fixes: c078290a2b ("selftests: include bonding tests into the kselftest infra")
Acked-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Link: https://lore.kernel.org/r/20240116020201.1883023-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-16 06:58:53 -08:00
Jakub Kicinski
4697381bd0 selftests: netdevsim: correct expected FEC strings
ethtool CLI has changed its output. Make the test compatible.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/r/20240114224748.1210578-1-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-01-16 12:42:29 +01:00
Jakub Kicinski
2c4ca79772 selftests: netdevsim: sprinkle more udevadm settle
Number of tests are failing when netdev renaming is active
on the system. Add udevadm settle in logic determining
the names.

Fixes: 242aaf03dc ("selftests: add a test for ethtool pause stats")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20240114224726.1210532-1-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-01-16 12:16:04 +01:00
Benjamin Poirier
49078c1b80 selftests: forwarding: Remove executable bits from lib.sh
The lib.sh script is meant to be sourced from other scripts, not executed
directly. Therefore, remove the executable bits from lib.sh's permissions.

Fixes: fe32dffdcd ("selftests: forwarding: add TCPDUMP_EXTRA_FLAGS to lib.sh")
Tested-by: Hangbin Liu <liuhangbin@gmail.com>
Reviewed-by: Hangbin Liu <liuhangbin@gmail.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Benjamin Poirier <bpoirier@nvidia.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-01-16 09:06:15 +01:00
Benjamin Poirier
c2518da8e6 selftests: bonding: Change script interpreter
The tests changed by this patch, as well as the scripts they source, use
features which are not part of POSIX sh (ex. 'source' and 'local'). As a
result, these tests fail when /bin/sh is dash such as on Debian. Change the
interpreter to bash so that these tests can run successfully.

Fixes: d43eff0b85 ("selftests: bonding: up/down delay w/ slave link flapping")
Tested-by: Hangbin Liu <liuhangbin@gmail.com>
Reviewed-by: Hangbin Liu <liuhangbin@gmail.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Benjamin Poirier <bpoirier@nvidia.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-01-16 09:06:15 +01:00
John Fastabend
034ea1305e net: tls, add test to capture error on large splice
syzbot found an error with how splice() is handled with a msg greater
than 32. This was fixed in previous patch, but lets add a test for
it to ensure it continues to work.

Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2024-01-14 12:17:14 +00:00
Martin KaFai Lau
dbd7db7787 selftests/bpf: Test udp and tcp iter batching
The patch adds a test to exercise the bpf_iter_udp batching
logic. It specifically tests the case that there are multiple
so_reuseport udp_sk in a bucket of the udp_table.

The test creates two sets of so_reuseport sockets and
each set on a different port. Meaning there will be
two buckets in the udp_table.

The test does the following:
1. read() 3 out of 4 sockets in the first bucket.
2. close() all sockets in the first bucket. This
   will ensure the current bucket's offset in
   the kernel does not affect the read() of the
   following bucket.
3. read() all 4 sockets in the second bucket.

The test also reads one udp_sk at a time from
the bpf_iter_udp prog. The true case in
"do_test(..., bool onebyone)". This is the buggy case
that the previous patch fixed.

It also tests the "false" case in "do_test(..., bool onebyone)",
meaning the userspace reads the whole bucket. There is
no bug in this case but adding this test also while
at it.

Considering the way to have multiple tcp_sk in the same
bucket is similar (by using so_reuseport),
this patch also tests the bpf_iter_tcp even though the
bpf_iter_tcp batching logic works correctly.

Both IP v4 and v6 are exercising the same bpf_iter batching
code path, so only v6 is tested.

Acked-by: Yonghong Song <yonghong.song@linux.dev>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/r/20240112190530.3751661-4-martin.lau@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2024-01-13 11:01:44 -08:00
Linus Torvalds
23a80d462c RCU pull request for v6.8
This pull request contains the following branches:
 
 doc.2023.12.13a: Documentation and comment updates.
 
 torture.2023.11.23a: RCU torture, locktorture updates that include
         cleanups; nolibc init build support for mips, ppc and rv64;
         testing of mid stall duration scenario and fixing fqs task
         creation conditions.
 
 fixes.2023.12.13a: Misc fixes, most notably restricting usage of
         RCU CPU stall notifiers, to confine their usage primarily
         to debug kernels.
 
 rcu-tasks.2023.12.12b: RCU tasks minor fixes.
 
 srcu.2023.12.13a: lockdep annotation fix for NMI-safe accesses,
         callback advancing/acceleration cleanup and documentation
         improvements.
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Merge tag 'rcu.release.v6.8' of https://github.com/neeraju/linux

Pull RCU updates from Neeraj Upadhyay:

 - Documentation and comment updates

 - RCU torture, locktorture updates that include cleanups; nolibc init
   build support for mips, ppc and rv64; testing of mid stall duration
   scenario and fixing fqs task creation conditions

 - Misc fixes, most notably restricting usage of RCU CPU stall
   notifiers, to confine their usage primarily to debug kernels

 - RCU tasks minor fixes

 - lockdep annotation fix for NMI-safe accesses, callback
   advancing/acceleration cleanup and documentation improvements

* tag 'rcu.release.v6.8' of https://github.com/neeraju/linux:
  rcu: Force quiescent states only for ongoing grace period
  doc: Clarify historical disclaimers in memory-barriers.txt
  doc: Mention address and data dependencies in rcu_dereference.rst
  doc: Clarify RCU Tasks reader/updater checklist
  rculist.h: docs: Fix wrong function summary
  Documentation: RCU: Remove repeated word in comments
  srcu: Use try-lock lockdep annotation for NMI-safe access.
  srcu: Explain why callbacks invocations can't run concurrently
  srcu: No need to advance/accelerate if no callback enqueued
  srcu: Remove superfluous callbacks advancing from srcu_gp_start()
  rcu: Remove unused macros from rcupdate.h
  rcu: Restrict access to RCU CPU stall notifiers
  rcu-tasks: Mark RCU Tasks accesses to current->rcu_tasks_idle_cpu
  rcutorture: Add fqs_holdoff check before fqs_task is created
  rcutorture: Add mid-sized stall to TREE07
  rcutorture: add nolibc init support for mips, ppc and rv64
  locktorture: Increase Hamming distance between call_rcu_chain and rcu_call_chains
2024-01-12 16:35:58 -08:00
Donet Tom
00bcfcd47a selftests: mm: hugepage-vmemmap fails on 64K page size systems
The kernel sefltest mm/hugepage-vmemmap fails on architectures which has
different page size other than 4K.  In hugepage-vmemmap page size used is
4k so the pfn calculation will go wrong on systems which has different
page size .The length of MAP_HUGETLB memory must be hugepage aligned but
in hugepage-vmemmap map length is 2M so this will not get aligned if the
system has differnet hugepage size.

Added  psize() to get the page size and default_huge_page_size() to
get the default hugepage size at run time, hugepage-vmemmap test pass
on powerpc with 64K page size and x86 with 4K page size.

Result on powerpc without patch (page size 64K)
*# ./hugepage-vmemmap
Returned address is 0x7effff000000 whose pfn is 0
Head page flags (100000000) is invalid
check_page_flags: Invalid argument
*#

Result on powerpc with patch (page size 64K)
*# ./hugepage-vmemmap
Returned address is 0x7effff000000 whose pfn is 600
*#

Result on x86 with patch (page size 4K)
*# ./hugepage-vmemmap
Returned address is 0x7fc7c2c00000 whose pfn is 1dac00
*#

Link: https://lkml.kernel.org/r/3b3a3ae37ba21218481c482a872bbf7526031600.1704865754.git.donettom@linux.vnet.ibm.com
Fixes: b147c89cd4 ("selftests: vm: add a hugetlb test case")
Signed-off-by: Donet Tom <donettom@linux.vnet.ibm.com>
Reported-by: Geetika Moolchandani <geetika@linux.ibm.com>
Tested-by: Geetika Moolchandani <geetika@linux.ibm.com>
Acked-by: Muchun Song <muchun.song@linux.dev>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-01-12 15:20:48 -08:00
Linus Torvalds
fef018d819 hid-for-linus-2024010801
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Merge tag 'hid-for-linus-2024010801' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid

Pull HID updates from Jiri Kosina:

 - assorted functional fixes for hid-steam ported from SteamOS betas
   (Vicki Pfau)

 - fix for custom sensor-hub sensors (hinge angle sensor and LISS
   sensors) not working (Yauhen Kharuzhy)

 - functional fix for handling Confidence in Wacom driver (Jason
   Gerecke)

 - support for Ilitek ili2901 touchscreen (Zhengqiao Xia)

 - power management fix for Wacom userspace battery exporting
   (Tatsunosuke Tobita)

 - rework of wait-for-reset in order to reduce the need for
   I2C_HID_QUIRK_NO_IRQ_AFTER_RESET qurk; the success rate is now 50%
   better, but there are still further improvements to be made (Hans de
   Goede)

 - greatly improved coverage of Tablets in hid-selftests (Benjamin
   Tissoires)

 - support for Nintendo NSO controllers -- SNES, Genesis and N64 (Ryan
   McClelland)

 - support for controlling mcp2200 GPIOs (Johannes Roith)

 - power management improvement for EHL OOB wakeup in intel-ish
   (Kai-Heng Feng)

 - other assorted device-specific fixes and code cleanups

* tag 'hid-for-linus-2024010801' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: (53 commits)
  HID: amd_sfh: Add a new interface for exporting ALS data
  HID: amd_sfh: Add a new interface for exporting HPD data
  HID: amd_sfh: rename float_to_int() to amd_sfh_float_to_int()
  HID: i2c-hid: elan: Add ili2901 timing
  dt-bindings: HID: i2c-hid: elan: Introduce Ilitek ili2901
  HID: bpf: make bus_type const in struct hid_bpf_ops
  HID: make ishtp_cl_bus_type const
  HID: make hid_bus_type const
  HID: hid-steam: Add gamepad-only mode switched to by holding options
  HID: hid-steam: Better handling of serial number length
  HID: hid-steam: Update list of identifiers from SDL
  HID: hid-steam: Make client_opened a counter
  HID: hid-steam: Clean up locking
  HID: hid-steam: Disable watchdog instead of using a heartbeat
  HID: hid-steam: Avoid overwriting smoothing parameter
  HID: magicmouse: fix kerneldoc for struct magicmouse_sc
  HID: sensor-hub: Enable hid core report processing for all devices
  HID: wacom: Add additional tests of confidence behavior
  HID: wacom: Correct behavior when processing some confidence == false touches
  HID: nintendo: add support for nso controllers
  ...
2024-01-12 14:45:13 -08:00
Linus Torvalds
7912a6391f sound updates for 6.8-rc1
It was a clam development cycle.  There were an ALSA core extension
 for subformat PCM bits and a few ASoC core changes to support N:M
 mappings, while the most of remaining changes are driver-specific.
 
 Core:
 - API extensions for properly limiting PCM format bits via subformat
 - Enhanced support for N:M CPU:CODEC mappings in the core and in
   audio-graph-card2
 
 ASoC:
 - Lots of SOF updates: fallback support to older IPC versions,
   notification on control changes with IPC4.
   Also supports for ACPI parse for the ES83xx driver that reduces
   quirks.
 - Device tree support for describing parts of the card which can be
   active over suspend (for very low power playback or wake word use
   cases)
 - Support for more AMD and Intel systems, NXP i.MX8m MICFIL, Qualcomm
   SM8250, SM8550, SM8650 and X1E80100
 - Drop of Freescale MPC8610 code that is no longer supported
 
 HD-audio:
 - More CS35L41 codec extensions for Dell, HP and Lenovo models
 - TAS2781 codec extensions for Lenovo and co
 - New PCM subformat supports
 
 Others:
 - More enhancement for Scarlett2 USB mixer support
 - Various kselftest fixes
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Merge tag 'sound-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "It was a calm development cycle. There were an ALSA core extension for
  subformat PCM bits and a few ASoC core changes to support N:M
  mappings, while the most of remaining changes are driver-specific.

  Core:
   - API extensions for properly limiting PCM format bits via subformat
   - Enhanced support for N:M CPU:CODEC mappings in the core and in
     audio-graph-card2

  ASoC:
   - Lots of SOF updates: fallback support to older IPC versions,
     notification on control changes with IPC4. Also supports for ACPI
     parse for the ES83xx driver that reduces quirks.
   - Device tree support for describing parts of the card which can be
     active over suspend (for very low power playback or wake word use
     cases)
   - Support for more AMD and Intel systems, NXP i.MX8m MICFIL, Qualcomm
     SM8250, SM8550, SM8650 and X1E80100
   - Drop of Freescale MPC8610 code that is no longer supported

  HD-audio:
   - More CS35L41 codec extensions for Dell, HP and Lenovo models
   - TAS2781 codec extensions for Lenovo and co
   - New PCM subformat supports

  Others:
   - More enhancement for Scarlett2 USB mixer support
   - Various kselftest fixes"

* tag 'sound-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (337 commits)
  kselftest/alsa - conf: Stringify the printed errno in sysfs_get()
  kselftest/alsa - mixer-test: Fix the print format specifier warning
  kselftest/alsa - mixer-test: Fix the print format specifier warning
  kselftest/alsa - mixer-test: fix the number of parameters to ksft_exit_fail_msg()
  ALSA: hda/tas2781: annotate calibration data endianness
  ALSA: hda/realtek: Fix mute and mic-mute LEDs for HP Envy X360 13-ay0xxx
  ALSA: hda/conexant: Fix headset auto detect fail in cx8070 and SN6140
  ALSA: ac97: fix build regression
  ALSA: hda: cs35l41: Support more HP models without _DSD
  ALSA: hda/tas2781: add fixup for Lenovo 14ARB7
  ALSA: hda/tas2781: add TAS2563 support for 14ARB7
  ALSA: hda/tas2781: add configurable global i2c address
  ALSA: hda/tas2781: add ptrs to calibration functions
  ALSA: hda: Add driver properties for cs35l41 for Lenovo Legion Slim 7 Gen 8 serie
  ALSA: hda/realtek: enable SND_PCI_QUIRK for Lenovo Legion Slim 7 Gen 8 (2023) serie
  ALSA: hda/tas2781: configure the amp after firmware load
  ALSA: mark all struct bus_type as const
  ASoC: pxa: sspa: Don't select SND_ARM
  ASoC: rt5663: cancel the work when system suspends
  ALSA: scarlett2: Add PCM Input Switch for Solo Gen 4
  ...
2024-01-12 11:55:28 -08:00
Nicolas Dichtel
a159cbe81d selftests: rtnetlink: check enslaving iface in a bond
The goal is to check the following two sequences:
> ip link set dummy0 up
> ip link set dummy0 master bond0 down

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/20240108094103.2001224-3-nicolas.dichtel@6wind.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-11 16:47:40 -08:00
Dmitry Safonov
e689a87696 selftests/net/tcp-ao: Use LDLIBS instead of LDFLAGS
The rules to link selftests are:

> $(OUTPUT)/%_ipv4: %.c
> 	$(LINK.c) $^ $(LDLIBS) -o $@
>
> $(OUTPUT)/%_ipv6: %.c
> 	$(LINK.c) -DIPV6_TEST $^ $(LDLIBS) -o $@

The intel test robot uses only selftest's Makefile, not the top linux
Makefile:

> make W=1 O=/tmp/kselftest -C tools/testing/selftests

So, $(LINK.c) is determined by environment, rather than by kernel
Makefiles. On my machine (as well as other people that ran tcp-ao
selftests) GNU/Make implicit definition does use $(LDFLAGS):

> [dima@Mindolluin ~]$ make -p -f/dev/null | grep '^LINK.c\>'
> make: *** No targets.  Stop.
> LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)

But, according to build robot report, it's not the case for them.
While I could just avoid using pre-defined $(LINK.c), it's also used by
selftests/lib.mk by default.

Anyways, according to GNU/Make documentation [1], I should have used
$(LDLIBS) instead of $(LDFLAGS) in the first place, so let's just do it:

> LDFLAGS
>     Extra flags to give to compilers when they are supposed to invoke
>     the linker, ‘ld’, such as -L. Libraries (-lfoo) should be added
>     to the LDLIBS variable instead.
> LDLIBS
>     Library flags or names given to compilers when they are supposed
>     to invoke the linker, ‘ld’. LOADLIBES is a deprecated (but still
>     supported) alternative to LDLIBS. Non-library linker flags, such
>     as -L, should go in the LDFLAGS variable.

[1]: https://www.gnu.org/software/make/manual/html_node/Implicit-Variables.html

Fixes: cfbab37b3d ("selftests/net: Add TCP-AO library")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202401011151.veyYTJzq-lkp@intel.com/
Signed-off-by: Dmitry Safonov <dima@arista.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Link: https://lore.kernel.org/r/20240110-tcp_ao-selftests-makefile-v1-1-aa07d043f052@arista.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-11 16:31:04 -08:00
Linus Torvalds
3e7aeb78ab Networking changes for 6.8.
Core & protocols
 ----------------
 
  - Analyze and reorganize core networking structs (socks, netdev,
    netns, mibs) to optimize cacheline consumption and set up
    build time warnings to safeguard against future header changes.
    This improves TCP performances with many concurrent connections
    up to 40%.
 
  - Add page-pool netlink-based introspection, exposing the
    memory usage and recycling stats. This helps indentify
    bad PP users and possible leaks.
 
  - Refine TCP/DCCP source port selection to no longer favor even
    source port at connect() time when IP_LOCAL_PORT_RANGE is set.
    This lowers the time taken by connect() for hosts having
    many active connections to the same destination.
 
  - Refactor the TCP bind conflict code, shrinking related socket
    structs.
 
  - Refactor TCP SYN-Cookie handling, as a preparation step to
    allow arbitrary SYN-Cookie processing via eBPF.
 
  - Tune optmem_max for 0-copy usage, increasing the default value
    to 128KB and namespecifying it.
 
  - Allow coalescing for cloned skbs coming from page pools, improving
    RX performances with some common configurations.
 
  - Reduce extension header parsing overhead at GRO time.
 
  - Add bridge MDB bulk deletion support, allowing user-space to
    request the deletion of matching entries.
 
  - Reorder nftables struct members, to keep data accessed by the
    datapath first.
 
  - Introduce TC block ports tracking and use. This allows supporting
    multicast-like behavior at the TC layer.
 
  - Remove UAPI support for retired TC qdiscs (dsmark, CBQ and ATM) and
    classifiers (RSVP and tcindex).
 
  - More data-race annotations.
 
  - Extend the diag interface to dump TCP bound-only sockets.
 
  - Conditional notification of events for TC qdisc class and actions.
 
  - Support for WPAN dynamic associations with nearby devices, to form
    a sub-network using a specific PAN ID.
 
  - Implement SMCv2.1 virtual ISM device support.
 
  - Add support for Batman-avd mulicast packet type.
 
 BPF
 ---
 
  - Tons of verifier improvements:
    - BPF register bounds logic and range support along with a large
      test suite
    - log improvements
    - complete precision tracking support for register spills
    - track aligned STACK_ZERO cases as imprecise spilled registers. It
      improves the verifier "instructions processed" metric from single
      digit to 50-60% for some programs
    - support for user's global BPF subprogram arguments with few
      commonly requested annotations for a better developer experience
    - support tracking of BPF_JNE which helps cases when the compiler
      transforms (unsigned) "a > 0" into "if a == 0 goto xxx" and the
      like
    - several fixes
 
  - Add initial TX metadata implementation for AF_XDP with support in
    mlx5 and stmmac drivers. Two types of offloads are supported right
    now, that is, TX timestamp and TX checksum offload.
 
  - Fix kCFI bugs in BPF all forms of indirect calls from BPF into
    kernel and from kernel into BPF work with CFI enabled. This allows
    BPF to work with CONFIG_FINEIBT=y.
 
  - Change BPF verifier logic to validate global subprograms lazily
    instead of unconditionally before the main program, so they can be
    guarded using BPF CO-RE techniques.
 
  - Support uid/gid options when mounting bpffs.
 
  - Add a new kfunc which acquires the associated cgroup of a task
    within a specific cgroup v1 hierarchy where the latter is identified
    by its id.
 
  - Extend verifier to allow bpf_refcount_acquire() of a map value field
    obtained via direct load which is a use-case needed in sched_ext.
 
  - Add BPF link_info support for uprobe multi link along with bpftool
    integration for the latter.
 
  - Support for VLAN tag in XDP hints.
 
  - Remove deprecated bpfilter kernel leftovers given the project
    is developed in user-space (https://github.com/facebook/bpfilter).
 
 Misc
 ----
 
  - Support for parellel TC self-tests execution.
 
  - Increase MPTCP self-tests coverage.
 
  - Updated the bridge documentation, including several so-far
    undocumented features.
 
  - Convert all the net self-tests to run in unique netns, to
    avoid random failures due to conflict and allow concurrent
    runs.
 
  - Add TCP-AO self-tests.
 
  - Add kunit tests for both cfg80211 and mac80211.
 
  - Autogenerate Netlink families documentation from YAML spec.
 
  - Add yml-gen support for fixed headers and recursive nests, the
    tool can now generate user-space code for all genetlink families
    for which we have specs.
 
  - A bunch of additional module descriptions fixes.
 
  - Catch incorrect freeing of pages belonging to a page pool.
 
 Driver API
 ----------
 
  - Rust abstractions for network PHY drivers; do not cover yet the
    full C API, but already allow implementing functional PHY drivers
    in rust.
 
  - Introduce queue and NAPI support in the netdev Netlink interface,
    allowing complete access to the device <> NAPIs <> queues
    relationship.
 
  - Introduce notifications filtering for devlink to allow control
    application scale to thousands of instances.
 
  - Improve PHY validation, requesting rate matching information for
    each ethtool link mode supported by both the PHY and host.
 
  - Add support for ethtool symmetric-xor RSS hash.
 
  - ACPI based Wifi band RFI (WBRF) mitigation feature for the AMD
    platform.
 
  - Expose pin fractional frequency offset value over new DPLL generic
    netlink attribute.
 
  - Convert older drivers to platform remove callback returning void.
 
  - Add support for PHY package MMD read/write.
 
 New hardware / drivers
 ----------------------
 
  - Ethernet:
    - Octeon CN10K devices
    - Broadcom 5760X P7
    - Qualcomm SM8550 SoC
    - Texas Instrument DP83TG720S PHY
 
  - Bluetooth:
    - IMC Networks Bluetooth radio
 
 Removed
 -------
 
  - WiFi:
    - libertas 16-bit PCMCIA support
    - Atmel at76c50x drivers
    - HostAP ISA/PCMCIA style 802.11b driver
    - zd1201 802.11b USB dongles
    - Orinoco ISA/PCMCIA 802.11b driver
    - Aviator/Raytheon driver
    - Planet WL3501 driver
    - RNDIS USB 802.11b driver
 
 Drivers
 -------
 
  - Ethernet high-speed NICs:
    - Intel (100G, ice, idpf):
      - allow one by one port representors creation and removal
      - add temperature and clock information reporting
      - add get/set for ethtool's header split ringparam
      - add again FW logging
      - adds support switchdev hardware packet mirroring
      - iavf: implement symmetric-xor RSS hash
      - igc: add support for concurrent physical and free-running timers
      - i40e: increase the allowable descriptors
    - nVidia/Mellanox:
      - Preparation for Socket-Direct multi-dev netdev. That will allow
        in future releases combining multiple PFs devices attached to
        different NUMA nodes under the same netdev
    - Broadcom (bnxt):
      - TX completion handling improvements
      - add basic ntuple filter support
      - reduce MSIX vectors usage for MQPRIO offload
      - add VXLAN support, USO offload and TX coalesce completion for P7
    - Marvell Octeon EP:
      - xmit-more support
      - add PF-VF mailbox support and use it for FW notifications for VFs
    - Wangxun (ngbe/txgbe):
      - implement ethtool functions to operate pause param, ring param,
        coalesce channel number and msglevel
    - Netronome/Corigine (nfp):
      - add flow-steering support
      - support UDP segmentation offload
 
  - Ethernet NICs embedded, slower, virtual:
    - Xilinx AXI: remove duplicate DMA code adopting the dma engine driver
    - stmmac: add support for HW-accelerated VLAN stripping
    - TI AM654x sw: add mqprio, frame preemption & coalescing
    - gve: add support for non-4k page sizes.
    - virtio-net: support dynamic coalescing moderation
 
  - nVidia/Mellanox Ethernet datacenter switches:
    - allow firmware upgrade without a reboot
    - more flexible support for bridge flooding via the compressed
      FID flooding mode
 
  - Ethernet embedded switches:
    - Microchip:
      - fine-tune flow control and speed configurations in KSZ8xxx
      - KSZ88X3: enable setting rmii reference
    - Renesas:
      - add jumbo frames support
    - Marvell:
      - 88E6xxx: add "eth-mac" and "rmon" stats support
 
  - Ethernet PHYs:
    - aquantia: add firmware load support
    - at803x: refactor the driver to simplify adding support for more
      chip variants
    - NXP C45 TJA11xx: Add MACsec offload support
 
  - Wifi:
    - MediaTek (mt76):
      - NVMEM EEPROM improvements
      - mt7996 Extremely High Throughput (EHT) improvements
      - mt7996 Wireless Ethernet Dispatcher (WED) support
      - mt7996 36-bit DMA support
    - Qualcomm (ath12k):
      - support for a single MSI vector
      - WCN7850: support AP mode
    - Intel (iwlwifi):
      - new debugfs file fw_dbg_clear
      - allow concurrent P2P operation on DFS channels
 
  - Bluetooth:
    - QCA2066: support HFP offload
    - ISO: more broadcast-related improvements
    - NXP: better recovery in case receiver/transmitter get out of sync
 
 Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Paolo Abeni:
 "The most interesting thing is probably the networking structs
  reorganization and a significant amount of changes is around
  self-tests.

  Core & protocols:

   - Analyze and reorganize core networking structs (socks, netdev,
     netns, mibs) to optimize cacheline consumption and set up build
     time warnings to safeguard against future header changes

     This improves TCP performances with many concurrent connections up
     to 40%

   - Add page-pool netlink-based introspection, exposing the memory
     usage and recycling stats. This helps indentify bad PP users and
     possible leaks

   - Refine TCP/DCCP source port selection to no longer favor even
     source port at connect() time when IP_LOCAL_PORT_RANGE is set. This
     lowers the time taken by connect() for hosts having many active
     connections to the same destination

   - Refactor the TCP bind conflict code, shrinking related socket
     structs

   - Refactor TCP SYN-Cookie handling, as a preparation step to allow
     arbitrary SYN-Cookie processing via eBPF

   - Tune optmem_max for 0-copy usage, increasing the default value to
     128KB and namespecifying it

   - Allow coalescing for cloned skbs coming from page pools, improving
     RX performances with some common configurations

   - Reduce extension header parsing overhead at GRO time

   - Add bridge MDB bulk deletion support, allowing user-space to
     request the deletion of matching entries

   - Reorder nftables struct members, to keep data accessed by the
     datapath first

   - Introduce TC block ports tracking and use. This allows supporting
     multicast-like behavior at the TC layer

   - Remove UAPI support for retired TC qdiscs (dsmark, CBQ and ATM) and
     classifiers (RSVP and tcindex)

   - More data-race annotations

   - Extend the diag interface to dump TCP bound-only sockets

   - Conditional notification of events for TC qdisc class and actions

   - Support for WPAN dynamic associations with nearby devices, to form
     a sub-network using a specific PAN ID

   - Implement SMCv2.1 virtual ISM device support

   - Add support for Batman-avd mulicast packet type

  BPF:

   - Tons of verifier improvements:
       - BPF register bounds logic and range support along with a large
         test suite
       - log improvements
       - complete precision tracking support for register spills
       - track aligned STACK_ZERO cases as imprecise spilled registers.
         This improves the verifier "instructions processed" metric from
         single digit to 50-60% for some programs
       - support for user's global BPF subprogram arguments with few
         commonly requested annotations for a better developer
         experience
       - support tracking of BPF_JNE which helps cases when the compiler
         transforms (unsigned) "a > 0" into "if a == 0 goto xxx" and the
         like
       - several fixes

   - Add initial TX metadata implementation for AF_XDP with support in
     mlx5 and stmmac drivers. Two types of offloads are supported right
     now, that is, TX timestamp and TX checksum offload

   - Fix kCFI bugs in BPF all forms of indirect calls from BPF into
     kernel and from kernel into BPF work with CFI enabled. This allows
     BPF to work with CONFIG_FINEIBT=y

   - Change BPF verifier logic to validate global subprograms lazily
     instead of unconditionally before the main program, so they can be
     guarded using BPF CO-RE techniques

   - Support uid/gid options when mounting bpffs

   - Add a new kfunc which acquires the associated cgroup of a task
     within a specific cgroup v1 hierarchy where the latter is
     identified by its id

   - Extend verifier to allow bpf_refcount_acquire() of a map value
     field obtained via direct load which is a use-case needed in
     sched_ext

   - Add BPF link_info support for uprobe multi link along with bpftool
     integration for the latter

   - Support for VLAN tag in XDP hints

   - Remove deprecated bpfilter kernel leftovers given the project is
     developed in user-space (https://github.com/facebook/bpfilter)

  Misc:

   - Support for parellel TC self-tests execution

   - Increase MPTCP self-tests coverage

   - Updated the bridge documentation, including several so-far
     undocumented features

   - Convert all the net self-tests to run in unique netns, to avoid
     random failures due to conflict and allow concurrent runs

   - Add TCP-AO self-tests

   - Add kunit tests for both cfg80211 and mac80211

   - Autogenerate Netlink families documentation from YAML spec

   - Add yml-gen support for fixed headers and recursive nests, the tool
     can now generate user-space code for all genetlink families for
     which we have specs

   - A bunch of additional module descriptions fixes

   - Catch incorrect freeing of pages belonging to a page pool

  Driver API:

   - Rust abstractions for network PHY drivers; do not cover yet the
     full C API, but already allow implementing functional PHY drivers
     in rust

   - Introduce queue and NAPI support in the netdev Netlink interface,
     allowing complete access to the device <> NAPIs <> queues
     relationship

   - Introduce notifications filtering for devlink to allow control
     application scale to thousands of instances

   - Improve PHY validation, requesting rate matching information for
     each ethtool link mode supported by both the PHY and host

   - Add support for ethtool symmetric-xor RSS hash

   - ACPI based Wifi band RFI (WBRF) mitigation feature for the AMD
     platform

   - Expose pin fractional frequency offset value over new DPLL generic
     netlink attribute

   - Convert older drivers to platform remove callback returning void

   - Add support for PHY package MMD read/write

  New hardware / drivers:

   - Ethernet:
       - Octeon CN10K devices
       - Broadcom 5760X P7
       - Qualcomm SM8550 SoC
       - Texas Instrument DP83TG720S PHY

   - Bluetooth:
       - IMC Networks Bluetooth radio

  Removed:

   - WiFi:
       - libertas 16-bit PCMCIA support
       - Atmel at76c50x drivers
       - HostAP ISA/PCMCIA style 802.11b driver
       - zd1201 802.11b USB dongles
       - Orinoco ISA/PCMCIA 802.11b driver
       - Aviator/Raytheon driver
       - Planet WL3501 driver
       - RNDIS USB 802.11b driver

  Driver updates:

   - Ethernet high-speed NICs:
       - Intel (100G, ice, idpf):
          - allow one by one port representors creation and removal
          - add temperature and clock information reporting
          - add get/set for ethtool's header split ringparam
          - add again FW logging
          - adds support switchdev hardware packet mirroring
          - iavf: implement symmetric-xor RSS hash
          - igc: add support for concurrent physical and free-running
            timers
          - i40e: increase the allowable descriptors
       - nVidia/Mellanox:
          - Preparation for Socket-Direct multi-dev netdev. That will
            allow in future releases combining multiple PFs devices
            attached to different NUMA nodes under the same netdev
       - Broadcom (bnxt):
          - TX completion handling improvements
          - add basic ntuple filter support
          - reduce MSIX vectors usage for MQPRIO offload
          - add VXLAN support, USO offload and TX coalesce completion
            for P7
       - Marvell Octeon EP:
          - xmit-more support
          - add PF-VF mailbox support and use it for FW notifications
            for VFs
       - Wangxun (ngbe/txgbe):
          - implement ethtool functions to operate pause param, ring
            param, coalesce channel number and msglevel
       - Netronome/Corigine (nfp):
          - add flow-steering support
          - support UDP segmentation offload

   - Ethernet NICs embedded, slower, virtual:
       - Xilinx AXI: remove duplicate DMA code adopting the dma engine
         driver
       - stmmac: add support for HW-accelerated VLAN stripping
       - TI AM654x sw: add mqprio, frame preemption & coalescing
       - gve: add support for non-4k page sizes.
       - virtio-net: support dynamic coalescing moderation

   - nVidia/Mellanox Ethernet datacenter switches:
       - allow firmware upgrade without a reboot
       - more flexible support for bridge flooding via the compressed
         FID flooding mode

   - Ethernet embedded switches:
       - Microchip:
          - fine-tune flow control and speed configurations in KSZ8xxx
          - KSZ88X3: enable setting rmii reference
       - Renesas:
          - add jumbo frames support
       - Marvell:
          - 88E6xxx: add "eth-mac" and "rmon" stats support

   - Ethernet PHYs:
       - aquantia: add firmware load support
       - at803x: refactor the driver to simplify adding support for more
         chip variants
       - NXP C45 TJA11xx: Add MACsec offload support

   - Wifi:
       - MediaTek (mt76):
          - NVMEM EEPROM improvements
          - mt7996 Extremely High Throughput (EHT) improvements
          - mt7996 Wireless Ethernet Dispatcher (WED) support
          - mt7996 36-bit DMA support
       - Qualcomm (ath12k):
          - support for a single MSI vector
          - WCN7850: support AP mode
       - Intel (iwlwifi):
          - new debugfs file fw_dbg_clear
          - allow concurrent P2P operation on DFS channels

   - Bluetooth:
       - QCA2066: support HFP offload
       - ISO: more broadcast-related improvements
       - NXP: better recovery in case receiver/transmitter get out of sync"

* tag 'net-next-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1714 commits)
  lan78xx: remove redundant statement in lan78xx_get_eee
  lan743x: remove redundant statement in lan743x_ethtool_get_eee
  bnxt_en: Fix RCU locking for ntuple filters in bnxt_rx_flow_steer()
  bnxt_en: Fix RCU locking for ntuple filters in bnxt_srxclsrldel()
  bnxt_en: Remove unneeded variable in bnxt_hwrm_clear_vnic_filter()
  tcp: Revert no longer abort SYN_SENT when receiving some ICMP
  Revert "mlx5 updates 2023-12-20"
  Revert "net: stmmac: Enable Per DMA Channel interrupt"
  ipvlan: Remove usage of the deprecated ida_simple_xx() API
  ipvlan: Fix a typo in a comment
  net/sched: Remove ipt action tests
  net: stmmac: Use interrupt mode INTM=1 for per channel irq
  net: stmmac: Add support for TX/RX channel interrupt
  net: stmmac: Make MSI interrupt routine generic
  dt-bindings: net: snps,dwmac: per channel irq
  net: phy: at803x: make read_status more generic
  net: phy: at803x: add support for cdt cross short test for qca808x
  net: phy: at803x: refactor qca808x cable test get status function
  net: phy: at803x: generalize cdt fault length function
  net: ethernet: cortina: Drop TSO support
  ...
2024-01-11 10:07:29 -08:00
Nicolin Chen
bf26eb83fd iommufd/selftest: Add coverage for IOMMU_HWPT_INVALIDATE ioctl
Add test cases for the IOMMU_HWPT_INVALIDATE ioctl and verify it by using
the new IOMMU_TEST_OP_MD_CHECK_IOTLB.

Link: https://lore.kernel.org/r/20240111041015.47920-7-yi.l.liu@intel.com
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Co-developed-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2024-01-11 13:01:25 -04:00
Nicolin Chen
e1fa6640d5 iommufd/selftest: Add IOMMU_TEST_OP_MD_CHECK_IOTLB test op
Allow to test whether IOTLB has been invalidated or not.

Link: https://lore.kernel.org/r/20240111041015.47920-6-yi.l.liu@intel.com
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2024-01-11 13:01:25 -04:00
Palmer Dabbelt
9b1d9abe24
Merge patch series "tools: selftests: riscv: Fix compiler warnings"
Christoph Muellner <christoph.muellner@vrull.eu> says:

From: Christoph Müllner <christoph.muellner@vrull.eu>

When building the RISC-V selftests with a riscv32 compiler I ran into
a couple of compiler warnings. While riscv32 support for these tests is
questionable, the fixes are so trivial that it is probably best to simply
apply them.

Note that the missing-include patch and some format string warnings
are also relevant for riscv64.

* b4-shazam-merge:
  tools: selftests: riscv: Fix compile warnings in mm tests
  tools: selftests: riscv: Fix compile warnings in vector tests
  tools: selftests: riscv: Add missing include for vector test
  tools: selftests: riscv: Fix compile warnings in cbo
  tools: selftests: riscv: Fix compile warnings in hwprobe

Link: https://lore.kernel.org/r/20231123185821.2272504-1-christoph.muellner@vrull.eu
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-11 08:02:55 -08:00
Christoph Müllner
12c1691965
tools: selftests: riscv: Fix compile warnings in mm tests
When building the mm tests with a riscv32 compiler, we see a range
of shift-count-overflow errors from shifting 1UL by more than 32 bits
in do_mmaps(). Since, the relevant code is only called from code that
is gated by `__riscv_xlen == 64`, we can just apply the same gating
to do_mmaps().

Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20231123185821.2272504-6-christoph.muellner@vrull.eu
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-11 08:02:51 -08:00
Christoph Müllner
e1baf5e68e
tools: selftests: riscv: Fix compile warnings in vector tests
GCC prints a couple of format string warnings when compiling
the vector tests. Let's follow the recommendation in
Documentation/printk-formats.txt to fix these warnings.

Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20231123185821.2272504-5-christoph.muellner@vrull.eu
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-11 08:02:50 -08:00
Christoph Müllner
b250c90898
tools: selftests: riscv: Add missing include for vector test
GCC raises the following warning:
  warning: 'status' may be used uninitialized
The warning comes from the fact, that the signature of waitpid() is
unknown and therefore the initialization of GCC cannot be guessed.
Let's add the relevant header to address this warning.

Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Andy Chiu <andy.chiu@sifive.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20231123185821.2272504-4-christoph.muellner@vrull.eu
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-11 08:02:49 -08:00
Christoph Müllner
ac7b2a02d6
tools: selftests: riscv: Fix compile warnings in cbo
GCC prints a couple of format string warnings when compiling
the cbo test. Let's follow the recommendation in
Documentation/printk-formats.txt to fix these warnings.

Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20231123185821.2272504-3-christoph.muellner@vrull.eu
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-11 08:02:48 -08:00
Christoph Müllner
b91c26fdb0
tools: selftests: riscv: Fix compile warnings in hwprobe
GCC prints a couple of format string warnings when compiling
the hwprobe test. Let's follow the recommendation in
Documentation/printk-formats.txt to fix these warnings.

Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20231123185821.2272504-2-christoph.muellner@vrull.eu
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-11 08:02:47 -08:00
Linus Torvalds
a05aea98d4 sysctl-6.8-rc1
To help make the move of sysctls out of kernel/sysctl.c not incur a size
 penalty sysctl has been changed to allow us to not require the sentinel, the
 final empty element on the sysctl array. Joel Granados has been doing all this
 work. On the v6.6 kernel we got the major infrastructure changes required to
 support this. For v6.7 we had all arch/ and drivers/ modified to remove
 the sentinel. For v6.8-rc1 we get a few more updates for fs/ directory only.
 The kernel/ directory is left but we'll save that for v6.9-rc1 as those patches
 are still being reviewed. After that we then can expect also the removal of the
 no longer needed check for procname == NULL.
 
 Let us recap the purpose of this work:
 
   - this helps reduce the overall build time size of the kernel and run time
     memory consumed by the kernel by about ~64 bytes per array
   - the extra 64-byte penalty is no longer inncurred now when we move sysctls
     out from kernel/sysctl.c to their own files
 
 Thomas Weißschuh also sent a few cleanups, for v6.9-rc1 we expect to see further
 work by Thomas Weißschuh with the constificatin of the struct ctl_table.
 
 Due to Joel Granados's work, and to help bring in new blood, I have suggested
 for him to become a maintainer and he's accepted. So for v6.9-rc1 I look forward
 to seeing him sent you a pull request for further sysctl changes. This also
 removes Iurii Zaikin as a maintainer as he has moved on to other projects and
 has had no time to help at all.
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Merge tag 'sysctl-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux

Pull sysctl updates from Luis Chamberlain:
 "To help make the move of sysctls out of kernel/sysctl.c not incur a
  size penalty sysctl has been changed to allow us to not require the
  sentinel, the final empty element on the sysctl array. Joel Granados
  has been doing all this work.

  In the v6.6 kernel we got the major infrastructure changes required to
  support this. For v6.7 we had all arch/ and drivers/ modified to
  remove the sentinel. For v6.8-rc1 we get a few more updates for fs/
  directory only.

  The kernel/ directory is left but we'll save that for v6.9-rc1 as
  those patches are still being reviewed. After that we then can expect
  also the removal of the no longer needed check for procname == NULL.

  Let us recap the purpose of this work:

   - this helps reduce the overall build time size of the kernel and run
     time memory consumed by the kernel by about ~64 bytes per array

   - the extra 64-byte penalty is no longer inncurred now when we move
     sysctls out from kernel/sysctl.c to their own files

  Thomas Weißschuh also sent a few cleanups, for v6.9-rc1 we expect to
  see further work by Thomas Weißschuh with the constificatin of the
  struct ctl_table.

  Due to Joel Granados's work, and to help bring in new blood, I have
  suggested for him to become a maintainer and he's accepted. So for
  v6.9-rc1 I look forward to seeing him sent you a pull request for
  further sysctl changes. This also removes Iurii Zaikin as a maintainer
  as he has moved on to other projects and has had no time to help at
  all"

* tag 'sysctl-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux:
  sysctl: remove struct ctl_path
  sysctl: delete unused define SYSCTL_PERM_EMPTY_DIR
  coda: Remove the now superfluous sentinel elements from ctl_table array
  sysctl: Remove the now superfluous sentinel elements from ctl_table array
  fs: Remove the now superfluous sentinel elements from ctl_table array
  cachefiles: Remove the now superfluous sentinel element from ctl_table array
  sysclt: Clarify the results of selftest run
  sysctl: Add a selftest for handling empty dirs
  sysctl: Fix out of bounds access for empty sysctl registers
  MAINTAINERS: Add Joel Granados as co-maintainer for proc sysctl
  MAINTAINERS: remove Iurii Zaikin from proc sysctl
2024-01-10 17:44:36 -08:00
Linus Torvalds
0cb552aa97 This update includes the following changes:
API:
 
 - Add incremental lskcipher/skcipher processing.
 
 Algorithms:
 
 - Remove SHA1 from drbg.
 - Remove CFB and OFB.
 
 Drivers:
 
 - Add comp high perf mode configuration in hisilicon/zip.
 - Add support for 420xx devices in qat.
 - Add IAA Compression Accelerator driver.
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Merge tag 'v6.8-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto updates from Herbert Xu:
 "API:
   - Add incremental lskcipher/skcipher processing

  Algorithms:
   - Remove SHA1 from drbg
   - Remove CFB and OFB

  Drivers:
   - Add comp high perf mode configuration in hisilicon/zip
   - Add support for 420xx devices in qat
   - Add IAA Compression Accelerator driver"

* tag 'v6.8-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (172 commits)
  crypto: iaa - Account for cpu-less numa nodes
  crypto: scomp - fix req->dst buffer overflow
  crypto: sahara - add support for crypto_engine
  crypto: sahara - remove error message for bad aes request size
  crypto: sahara - remove unnecessary NULL assignments
  crypto: sahara - remove 'active' flag from sahara_aes_reqctx struct
  crypto: sahara - use dev_err_probe()
  crypto: sahara - use devm_clk_get_enabled()
  crypto: sahara - use BIT() macro
  crypto: sahara - clean up macro indentation
  crypto: sahara - do not resize req->src when doing hash operations
  crypto: sahara - fix processing hash requests with req->nbytes < sg->length
  crypto: sahara - improve error handling in sahara_sha_process()
  crypto: sahara - fix wait_for_completion_timeout() error handling
  crypto: sahara - fix ahash reqsize
  crypto: sahara - handle zero-length aes requests
  crypto: skcipher - remove excess kerneldoc members
  crypto: shash - remove excess kerneldoc members
  crypto: qat - generate dynamically arbiter mappings
  crypto: qat - add support for ring pair level telemetry
  ...
2024-01-10 12:23:43 -08:00
Dan Williams
3601311593 Merge branch 'for-6.8/cxl-cper' into for-6.8/cxl
Pick up the CPER to CXL driver integration work for v6.8. Some
additional cleanup of cper_estatus_print() messages is needed, but that
is to be handled incrementally.
2024-01-09 19:21:44 -08:00
Linus Torvalds
ab27740f76 linux_kselftest-next-6.8-rc1
This kselftest update for Linux 6.8-rc1 consists of enhancements
 to reporting test results, fixes to root and user run behavior
 and fixing ksft_print_msg() calls.
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Merge tag 'linux_kselftest-next-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest update from Shuah Khan:
 "Enhancements to reporting test results, fixes to root and user run
  behavior and fixing ksft_print_msg() calls"

* tag 'linux_kselftest-next-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  tracing/selftests: Add ownership modification tests for eventfs
  selftests: sched: Remove initialization to 0 for a static variable
  selftests: capabilities: namespace create varies for root and normal user
  selftests: prctl: Add prctl test for PR_GET_NAME
  kselftest/vDSO: Use ksft_print_msg() rather than printf in vdso_test_abi
  kselftest/vDSO: Fix message formatting for clock_id logging
  kselftest/vDSO: Make test name reporting for vdso_abi_test tooling friendly
  selftests:x86: Fix Format String Warnings in lam.c
  selftests/breakpoints: Fix format specifier in ksft_print_msg in step_after_suspend_test.c
  selftests:breakpoints: Fix Format String Warning in breakpoint_test
2024-01-09 17:28:41 -08:00