7eb3cf7619
32347 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
318222a35b |
Merge branch 'akpm' (patches from Andrew)
Merge misc updates from Andrew Morton: - a few misc things and hotfixes - ocfs2 - almost all of MM * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (139 commits) kernel/memremap.c: remove the unused device_private_entry_fault() export mm: delete find_get_entries_tag mm/huge_memory.c: make __thp_get_unmapped_area static mm/mprotect.c: fix compilation warning because of unused 'mm' variable mm/page-writeback: introduce tracepoint for wait_on_page_writeback() mm/vmscan: simplify trace_reclaim_flags and trace_shrink_flags mm/Kconfig: update "Memory Model" help text mm/vmscan.c: don't disable irq again when count pgrefill for memcg mm: memblock: make keeping memblock memory opt-in rather than opt-out hugetlbfs: always use address space in inode for resv_map pointer mm/z3fold.c: support page migration mm/z3fold.c: add structure for buddy handles mm/z3fold.c: improve compression by extending search mm/z3fold.c: introduce helper functions mm/page_alloc.c: remove unnecessary parameter in rmqueue_pcplist mm/hmm: add ARCH_HAS_HMM_MIRROR ARCH_HAS_HMM_DEVICE Kconfig mm/vmscan.c: simplify shrink_inactive_list() fs/sync.c: sync_file_range(2) may use WB_SYNC_ALL writeback xen/privcmd-buf.c: convert to use vm_map_pages_zero() xen/gntdev.c: convert to use vm_map_pages() ... |
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Mike Rapoport
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350e88bad4 |
mm: memblock: make keeping memblock memory opt-in rather than opt-out
Most architectures do not need the memblock memory after the page allocator is initialized, but only few enable ARCH_DISCARD_MEMBLOCK in the arch Kconfig. Replacing ARCH_DISCARD_MEMBLOCK with ARCH_KEEP_MEMBLOCK and inverting the logic makes it clear which architectures actually use memblock after system initialization and skips the necessity to add ARCH_DISCARD_MEMBLOCK to the architectures that are still missing that option. Link: http://lkml.kernel.org/r/1556102150-32517-1-git-send-email-rppt@linux.ibm.com Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Cc: Russell King <linux@armlinux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Burton <paul.burton@mips.com> Cc: James Hogan <jhogan@kernel.org> Cc: Ley Foon Tan <lftan@altera.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Rich Felker <dalias@libc.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Eric Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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David Hildenbrand
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ac5c942645 |
mm/memory_hotplug: make __remove_pages() and arch_remove_memory() never fail
All callers of arch_remove_memory() ignore errors. And we should really try to remove any errors from the memory removal path. No more errors are reported from __remove_pages(). BUG() in s390x code in case arch_remove_memory() is triggered. We may implement that properly later. WARN in case powerpc code failed to remove the section mapping, which is better than ignoring the error completely right now. Link: http://lkml.kernel.org/r/20190409100148.24703-5-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Rich Felker <dalias@libc.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@linux.ibm.com> Cc: Oscar Salvador <osalvador@suse.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Christophe Leroy <christophe.leroy@c-s.fr> Cc: Stefan Agner <stefan@agner.ch> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Pavel Tatashin <pasha.tatashin@soleen.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Arun KS <arunks@codeaurora.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Rob Herring <robh@kernel.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Wei Yang <richard.weiyang@gmail.com> Cc: Qian Cai <cai@lca.pw> Cc: Mathieu Malaterre <malat@debian.org> Cc: Andrew Banman <andrew.banman@hpe.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Mike Travis <mike.travis@hpe.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Michal Hocko
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940519f0c8 |
mm, memory_hotplug: provide a more generic restrictions for memory hotplug
arch_add_memory, __add_pages take a want_memblock which controls whether the newly added memory should get the sysfs memblock user API (e.g. ZONE_DEVICE users do not want/need this interface). Some callers even want to control where do we allocate the memmap from by configuring altmap. Add a more generic hotplug context for arch_add_memory and __add_pages. struct mhp_restrictions contains flags which contains additional features to be enabled by the memory hotplug (MHP_MEMBLOCK_API currently) and altmap for alternative memmap allocator. This patch shouldn't introduce any functional change. [akpm@linux-foundation.org: build fix] Link: http://lkml.kernel.org/r/20190408082633.2864-3-osalvador@suse.de Signed-off-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Oscar Salvador <osalvador@suse.de> Cc: Dan Williams <dan.j.williams@intel.com> Cc: David Hildenbrand <david@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Alexandre Ghiti
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4eb0716e86 |
hugetlb: allow to free gigantic pages regardless of the configuration
On systems without CONTIG_ALLOC activated but that support gigantic pages, boottime reserved gigantic pages can not be freed at all. This patch simply enables the possibility to hand back those pages to memory allocator. Link: http://lkml.kernel.org/r/20190327063626.18421-5-alex@ghiti.fr Signed-off-by: Alexandre Ghiti <alex@ghiti.fr> Acked-by: David S. Miller <davem@davemloft.net> [sparc] Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Cc: Andy Lutomirsky <luto@kernel.org> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: "H . Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rich Felker <dalias@libc.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Will Deacon <will.deacon@arm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Alexandre Ghiti
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8df995f6bd |
mm: simplify MEMORY_ISOLATION && COMPACTION || CMA into CONTIG_ALLOC
This condition allows to define alloc_contig_range, so simplify it into a more accurate naming. Link: http://lkml.kernel.org/r/20190327063626.18421-4-alex@ghiti.fr Signed-off-by: Alexandre Ghiti <alex@ghiti.fr> Suggested-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Andy Lutomirsky <luto@kernel.org> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: "H . Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rich Felker <dalias@libc.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Ira Weiny
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73b0140bf0 |
mm/gup: change GUP fast to use flags rather than a write 'bool'
To facilitate additional options to get_user_pages_fast() change the singular write parameter to be gup_flags. This patch does not change any functionality. New functionality will follow in subsequent patches. Some of the get_user_pages_fast() call sites were unchanged because they already passed FOLL_WRITE or 0 for the write parameter. NOTE: It was suggested to change the ordering of the get_user_pages_fast() arguments to ensure that callers were converted. This breaks the current GUP call site convention of having the returned pages be the final parameter. So the suggestion was rejected. Link: http://lkml.kernel.org/r/20190328084422.29911-4-ira.weiny@intel.com Link: http://lkml.kernel.org/r/20190317183438.2057-4-ira.weiny@intel.com Signed-off-by: Ira Weiny <ira.weiny@intel.com> Reviewed-by: Mike Marshall <hubcap@omnibond.com> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dan Williams <dan.j.williams@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Hogan <jhogan@kernel.org> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Rich Felker <dalias@libc.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linus Torvalds
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fa4bff1650 |
Merge branch 'x86-mds-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 MDS mitigations from Thomas Gleixner:
"Microarchitectural Data Sampling (MDS) is a hardware vulnerability
which allows unprivileged speculative access to data which is
available in various CPU internal buffers. This new set of misfeatures
has the following CVEs assigned:
CVE-2018-12126 MSBDS Microarchitectural Store Buffer Data Sampling
CVE-2018-12130 MFBDS Microarchitectural Fill Buffer Data Sampling
CVE-2018-12127 MLPDS Microarchitectural Load Port Data Sampling
CVE-2019-11091 MDSUM Microarchitectural Data Sampling Uncacheable Memory
MDS attacks target microarchitectural buffers which speculatively
forward data under certain conditions. Disclosure gadgets can expose
this data via cache side channels.
Contrary to other speculation based vulnerabilities the MDS
vulnerability does not allow the attacker to control the memory target
address. As a consequence the attacks are purely sampling based, but
as demonstrated with the TLBleed attack samples can be postprocessed
successfully.
The mitigation is to flush the microarchitectural buffers on return to
user space and before entering a VM. It's bolted on the VERW
instruction and requires a microcode update. As some of the attacks
exploit data structures shared between hyperthreads, full protection
requires to disable hyperthreading. The kernel does not do that by
default to avoid breaking unattended updates.
The mitigation set comes with documentation for administrators and a
deeper technical view"
* 'x86-mds-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
x86/speculation/mds: Fix documentation typo
Documentation: Correct the possible MDS sysfs values
x86/mds: Add MDSUM variant to the MDS documentation
x86/speculation/mds: Add 'mitigations=' support for MDS
x86/speculation/mds: Print SMT vulnerable on MSBDS with mitigations off
x86/speculation/mds: Fix comment
x86/speculation/mds: Add SMT warning message
x86/speculation: Move arch_smt_update() call to after mitigation decisions
x86/speculation/mds: Add mds=full,nosmt cmdline option
Documentation: Add MDS vulnerability documentation
Documentation: Move L1TF to separate directory
x86/speculation/mds: Add mitigation mode VMWERV
x86/speculation/mds: Add sysfs reporting for MDS
x86/speculation/mds: Add mitigation control for MDS
x86/speculation/mds: Conditionally clear CPU buffers on idle entry
x86/kvm/vmx: Add MDS protection when L1D Flush is not active
x86/speculation/mds: Clear CPU buffers on exit to user
x86/speculation/mds: Add mds_clear_cpu_buffers()
x86/kvm: Expose X86_FEATURE_MD_CLEAR to guests
x86/speculation/mds: Add BUG_MSBDS_ONLY
...
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Stephane Eranian
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c7a286577d |
perf/x86/intel: Allow PEBS multi-entry in watermark mode
This patch fixes a restriction/bug introduced by: |
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Masahiro Yamada
|
409ca45526 |
x86/kconfig: Disable CONFIG_GENERIC_HWEIGHT and remove __HAVE_ARCH_SW_HWEIGHT
Remove an unnecessary arch complication:
arch/x86/include/asm/arch_hweight.h uses __sw_hweight{32,64} as
alternatives, and they are implemented in arch/x86/lib/hweight.S
x86 does not rely on the generic C implementation lib/hweight.c
at all, so CONFIG_GENERIC_HWEIGHT should be disabled.
__HAVE_ARCH_SW_HWEIGHT is not necessary either.
No change in functionality intended.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Uros Bizjak <ubizjak@gmail.com>
Link: http://lkml.kernel.org/r/1557665521-17570-1-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Steven Rostedt (VMware)
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693713cbdb |
x86: Hide the int3_emulate_call/jmp functions from UML
User Mode Linux does not have access to the ip or sp fields of the pt_regs, and accessing them causes UML to fail to build. Hide the int3_emulate_jmp() and int3_emulate_call() instructions from UML, as it doesn't need them anyway. Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
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Jiri Kosina
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56e33afd77 |
livepatch: Remove klp_check_compiler_support()
The only purpose of klp_check_compiler_support() is to make sure that we are not using ftrace on x86 via mcount (because that's executed only after prologue has already happened, and that's too late for livepatching purposes). Now that mcount is not supported by ftrace any more, there is no need for klp_check_compiler_support() either. Link: http://lkml.kernel.org/r/nycvar.YFH.7.76.1905102346100.17054@cbobk.fhfr.pm Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
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Steven Rostedt (VMware)
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562e14f722 |
ftrace/x86: Remove mcount support
There's two methods of enabling function tracing in Linux on x86. One is with just "gcc -pg" and the other is "gcc -pg -mfentry". The former will use calls to a special function "mcount" after the frame is set up in all C functions. The latter will add calls to a special function called "fentry" as the very first instruction of all C functions. At compile time, there is a check to see if gcc supports, -mfentry, and if it does, it will use that, because it is more versatile and less error prone for function tracing. Starting with v4.19, the minimum gcc supported to build the Linux kernel, was raised to version 4.6. That also happens to be the first gcc version to support -mfentry. Since on x86, using gcc versions from 4.6 and beyond will unconditionally enable the -mfentry, it will no longer use mcount as the method for inserting calls into the C functions of the kernel. This means that there is no point in continuing to maintain mcount in x86. Remove support for using mcount. This makes the code less complex, and will also allow it to be simplified in the future. Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Jiri Kosina <jkosina@suse.cz> Acked-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
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Steven Rostedt (VMware)
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518049d9d3 |
ftrace/x86_32: Remove support for non DYNAMIC_FTRACE
When DYNAMIC_FTRACE is enabled in the kernel, all the functions that can be traced by the function tracer have a "nop" placeholder at the start of the function. When function tracing is enabled, the nop is converted into a call to the tracing infrastructure where the functions get traced. This also allows for specifying specific functions to trace, and a lot of infrastructure is built on top of this. When DYNAMIC_FTRACE is not enabled, all the functions have a call to the ftrace trampoline. A check is made to see if a function pointer is the ftrace_stub or not, and if it is not, it calls the function pointer to trace the code. This adds over 10% overhead to the kernel even when tracing is disabled. When an architecture supports DYNAMIC_FTRACE there really is no reason to use the static tracing. I have kept non DYNAMIC_FTRACE available in x86 so that the generic code for non DYNAMIC_FTRACE can be tested. There is no reason to support non DYNAMIC_FTRACE for both x86_64 and x86_32. As the non DYNAMIC_FTRACE for x86_32 does not even support fentry, and we want to remove mcount completely, there's no reason to keep non DYNAMIC_FTRACE around for x86_32. Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
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Viresh Kumar
|
df24014abe |
cpufreq: Call transition notifier only once for each policy
Currently, the notifiers are called once for each CPU of the policy->cpus cpumask. It would be more optimal if the notifier can be called only once and all the relevant information be provided to it. Out of the 23 drivers that register for the transition notifiers today, only 4 of them do per-cpu updates and the callback for the rest can be called only once for the policy without any impact. This would also avoid multiple function calls to the notifier callbacks and reduce multiple iterations of notifier core's code (which does locking as well). This patch adds pointer to the cpufreq policy to the struct cpufreq_freqs, so the notifier callback has all the information available to it with a single call. The five drivers which perform per-cpu updates are updated to use the cpufreq policy. The freqs->cpu field is redundant now and is removed. Acked-by: David S. Miller <davem@davemloft.net> (sparc) Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Rafael J. Wysocki
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9ed0985332 |
x86: intel_epb: Take CONFIG_PM into account
Commit |
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Stephane Eranian
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6b89d4c1ae |
perf/x86/intel: Fix INTEL_FLAGS_EVENT_CONSTRAINT* masking
On Intel Westmere, a cmdline as follows: $ perf record -e cpu/event=0xc4,umask=0x2,name=br_inst_retired.near_call/p .... was failing. Yet the event+ umask support PEBS. It turns out this is due to a bug in the the PEBS event constraint table for westmere. All forms of BR_INST_RETIRED.* support PEBS. Therefore the constraint mask should ignore the umask. The name of the macro INTEL_FLAGS_EVENT_CONSTRAINT() hint that this is the case but it was not. That macros was checking both the event code and event umask. Therefore, it was only matching on 0x00c4. There are code+umask macros, they all have *UEVENT*. This bug fixes the issue by checking only the event code in the mask. Both single and range version are modified. Signed-off-by: Stephane Eranian <eranian@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: kan.liang@intel.com Link: http://lkml.kernel.org/r/20190509214556.123493-1-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Linus Torvalds
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7664cd6e3a |
Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull intgrity updates from James Morris: "This contains just three patches, the remainder were either included in other pull requests (eg. audit, lockdown) or will be upstreamed via other subsystems (eg. kselftests, Power). Included here is one bug fix, one documentation update, and extending the x86 IMA arch policy rules to coordinate the different kernel module signature verification methods" * 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: doc/kernel-parameters.txt: Deprecate ima_appraise_tcb x86/ima: add missing include x86/ima: require signed kernel modules |
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Linus Torvalds
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ddab5337b2 |
DMA mapping updates for 5.2
- remove the already broken support for NULL dev arguments to the
DMA API calls
- Kconfig tidyups
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Merge tag 'dma-mapping-5.2' of git://git.infradead.org/users/hch/dma-mapping
Pull DMA mapping updates from Christoph Hellwig:
- remove the already broken support for NULL dev arguments to the DMA
API calls
- Kconfig tidyups
* tag 'dma-mapping-5.2' of git://git.infradead.org/users/hch/dma-mapping:
dma-mapping: add a Kconfig symbol to indicate arch_dma_prep_coherent presence
dma-mapping: remove an unnecessary NULL check
x86/dma: Remove the x86_dma_fallback_dev hack
dma-mapping: remove leftover NULL device support
arm: use a dummy struct device for ISA DMA use of the DMA API
pxa3xx-gcu: pass struct device to dma_mmap_coherent
gbefb: switch to managed version of the DMA allocator
da8xx-fb: pass struct device to DMA API functions
parport_ip32: pass struct device to DMA API functions
dma: select GENERIC_ALLOCATOR for DMA_REMAP
|
||
Dave Hansen
|
5a28fc94c9 |
x86/mpx, mm/core: Fix recursive munmap() corruption
This is a bit of a mess, to put it mildly. But, it's a bug
that only seems to have showed up in 4.20 but wasn't noticed
until now, because nobody uses MPX.
MPX has the arch_unmap() hook inside of munmap() because MPX
uses bounds tables that protect other areas of memory. When
memory is unmapped, there is also a need to unmap the MPX
bounds tables. Barring this, unused bounds tables can eat 80%
of the address space.
But, the recursive do_munmap() that gets called vi arch_unmap()
wreaks havoc with __do_munmap()'s state. It can result in
freeing populated page tables, accessing bogus VMA state,
double-freed VMAs and more.
See the "long story" further below for the gory details.
To fix this, call arch_unmap() before __do_unmap() has a chance
to do anything meaningful. Also, remove the 'vma' argument
and force the MPX code to do its own, independent VMA lookup.
== UML / unicore32 impact ==
Remove unused 'vma' argument to arch_unmap(). No functional
change.
I compile tested this on UML but not unicore32.
== powerpc impact ==
powerpc uses arch_unmap() well to watch for munmap() on the
VDSO and zeroes out 'current->mm->context.vdso_base'. Moving
arch_unmap() makes this happen earlier in __do_munmap(). But,
'vdso_base' seems to only be used in perf and in the signal
delivery that happens near the return to userspace. I can not
find any likely impact to powerpc, other than the zeroing
happening a little earlier.
powerpc does not use the 'vma' argument and is unaffected by
its removal.
I compile-tested a 64-bit powerpc defconfig.
== x86 impact ==
For the common success case this is functionally identical to
what was there before. For the munmap() failure case, it's
possible that some MPX tables will be zapped for memory that
continues to be in use. But, this is an extraordinarily
unlikely scenario and the harm would be that MPX provides no
protection since the bounds table got reset (zeroed).
I can't imagine anyone doing this:
ptr = mmap();
// use ptr
ret = munmap(ptr);
if (ret)
// oh, there was an error, I'll
// keep using ptr.
Because if you're doing munmap(), you are *done* with the
memory. There's probably no good data in there _anyway_.
This passes the original reproducer from Richard Biener as
well as the existing mpx selftests/.
The long story:
munmap() has a couple of pieces:
1. Find the affected VMA(s)
2. Split the start/end one(s) if neceesary
3. Pull the VMAs out of the rbtree
4. Actually zap the memory via unmap_region(), including
freeing page tables (or queueing them to be freed).
5. Fix up some of the accounting (like fput()) and actually
free the VMA itself.
This specific ordering was actually introduced by:
|
||
|
Linus Torvalds
|
a2d635decb |
drm pull request for 5.2
-----BEGIN PGP SIGNATURE----- iQIcBAABAgAGBQJc04M6AAoJEAx081l5xIa+SJgP/0uIgIOM53vPpydgmr+2IEHF jbDqrd+mipgNriRVHjDsWdUHCUNtyhB7YEBCMrj3mY0rRFI7FlQQf4lOwYGoHiKP 4JZg4kwC37997lFXl1uabGj3DmJLtxKL2/D15zCH/uLe+2EDzWznP6NVdFT3WK0P YKZQCWT19PWSsLoBRPutWxkmop4AYvkqE0a6vXUlJlFYZK3Bbytx6/179uWKfiX5 ZkKEEtx1XiDAvcp5gBb6PISurycrBY0e/bkPBnK3ES5vawMbTU5IrmWOrQ4D8yOd z9qOVZawZ6+b2XBDgBWjQ9bM7I5R7Il1q/LglYEaFI9+wHUnlUdDSm6ft5/5BiCZ fqgkh5Bj2iEsajbSsacoljMOpxpYPqj63mqc+7fAGXF34V+B+9U1bpt8kCbMKowf 7Abb7IuiCR6vLDapjP6VqTMvdQ4O466OEAN83ULGFTdmMqYYH4AxaIwc+xcAk/aP RNq7/RHhh4FRynRAj9fCkGlF3ArnM88gLINwWuEQq4SClWGcvdw7eaHpwWo77c4g iccCnTLqSIg5pDVu07AQzzBlW6KulWxh5o72x+Xx+EXWdYUDHQ1SlNs11bSNUBV1 5MkrzY2GuD+NFEjsXJEDIPOr40mQOyJCXnxq8nXPsz/hD9kHeJPvWn3J3eVKyb5B Z6/knNqM0BDn3SaYR/rD =YFiQ -----END PGP SIGNATURE----- Merge tag 'drm-next-2019-05-09' of git://anongit.freedesktop.org/drm/drm Pull drm updates from Dave Airlie: "This has two exciting community drivers for ARM Mali accelerators. Since ARM has never been open source friendly on the GPU side of the house, the community has had to create open source drivers for the Mali GPUs. Lima covers the older t4xx and panfrost the newer 6xx/7xx series. Well done to all involved and hopefully this will help ARM head in the right direction. There is also now the ability if you don't have any of the legacy drivers enabled (pre-KMS) to remove all the pre-KMS support code from the core drm, this saves 10% or so in codesize on my machine. i915 also enable Icelake/Elkhart Lake Gen11 GPUs by default, vboxvideo moves out of staging. There are also some rcar-du patches which crossover with media tree but all should be acked by Mauro. Summary: uapi changes: - Colorspace connector property - fourcc - new YUV formts - timeline sync objects initially merged - expose FB_DAMAGE_CLIPS to atomic userspace new drivers: - vboxvideo: moved out of staging - aspeed: ASPEED SoC BMC chip display support - lima: ARM Mali4xx GPU acceleration driver support - panfrost: ARM Mali6xx/7xx Midgard/Bitfrost acceleration driver support core: - component helper docs - unplugging fixes - devm device init - MIPI/DSI rate control - shmem backed gem objects - connector, display_info, edid_quirks cleanups - dma_buf fence chain support - 64-bit dma-fence seqno comparison fixes - move initial fb config code to core - gem fence array helpers for Lima - ability to remove legacy support code if no drivers requires it (removes 10% of drm.ko size) - lease fixes ttm: - unified DRM_FILE_PAGE_OFFSET handling - Account for kernel allocations in kernel zone only panel: - OSD070T1718-19TS panel support - panel-tpo-td028ttec1 backlight support - Ronbo RB070D30 MIPI/DSI - Feiyang FY07024DI26A30-D MIPI-DSI panel - Rocktech jh057n00900 MIPI-DSI panel i915: - Comet Lake (Gen9) PCI IDs - Updated Icelake PCI IDs - Elkhartlake (Gen11) support - DP MST property addtions - plane and watermark fixes - Icelake port sync and VEBOX disable fixes - struct_mutex usage reduction - Icelake gamma fix - GuC reset fixes - make mmap more asynchronous - sound display power well race fixes - DDI/MIPI-DSI clocks for Icelake - Icelake RPS frequency changing support - Icelake workarounds amdgpu: - Use HMM for userptr - vega20 experimental smu11 support - RAS support for vega20 - BACO support for vega12 + fixes for vega20 - reworked IH interrupt handling - amdkfd RAS support - Freesync improvements - initial timeline sync object support - DC Z ordering fixes - NV12 planes support - colorspace properties for planes= - eDP opts if eDP already initialized nouveau: - misc fixes etnaviv: - misc fixes msm: - GPU zap shader support expansion - robustness ABI addition exynos: - Logging cleanups tegra: - Shared reset fix - CPU cache maintenance fix cirrus: - driver rewritten using simple helpers meson: - G12A support vmwgfx: - Resource dirtying management improvements - Userspace logging improvements virtio: - PRIME fixes rockchip: - rk3066 hdmi support sun4i: - DSI burst mode support vc4: - load tracker to detect underflow v3d: - v3d v4.2 support malidp: - initial Mali D71 support in komeda driver tfp410: - omap related improvement omapdrm: - drm bridge/panel support - drop some omap specific panels rcar-du: - Display writeback support" * tag 'drm-next-2019-05-09' of git://anongit.freedesktop.org/drm/drm: (1507 commits) drm/msm/a6xx: No zap shader is not an error drm/cma-helper: Fix drm_gem_cma_free_object() drm: Fix timestamp docs for variable refresh properties. drm/komeda: Mark the local functions as static drm/komeda: Fixed warning: Function parameter or member not described drm/komeda: Expose bus_width to Komeda-CORE drm/komeda: Add sysfs attribute: core_id and config_id drm: add non-desktop quirk for Valve HMDs drm/panfrost: Show stored feature registers drm/panfrost: Don't scream about deferred probe drm/panfrost: Disable PM on probe failure drm/panfrost: Set DMA masks earlier drm/panfrost: Add sanity checks to submit IOCTL drm/etnaviv: initialize idle mask before querying the HW db drm: introduce a capability flag for syncobj timeline support drm: report consistent errors when checking syncobj capibility drm/nouveau/nouveau: forward error generated while resuming objects tree drm/nouveau/fb/ramgk104: fix spelling mistake "sucessfully" -> "successfully" drm/nouveau/i2c: Disable i2c bus access after ->fini() drm/nouveau: Remove duplicate ACPI_VIDEO_NOTIFY_PROBE definition ... |
||
Brijesh Singh
|
eccd906484 |
x86/mm: Do not use set_{pud, pmd}_safe() when splitting a large page
The commit |
||
Peter Zijlstra
|
9e298e8604 |
ftrace/x86_64: Emulate call function while updating in breakpoint handler
Nicolai Stange discovered[1] that if live kernel patching is enabled, and the
function tracer started tracing the same function that was patched, the
conversion of the fentry call site during the translation of going from
calling the live kernel patch trampoline to the iterator trampoline, would
have as slight window where it didn't call anything.
As live kernel patching depends on ftrace to always call its code (to
prevent the function being traced from being called, as it will redirect
it). This small window would allow the old buggy function to be called, and
this can cause undesirable results.
Nicolai submitted new patches[2] but these were controversial. As this is
similar to the static call emulation issues that came up a while ago[3].
But after some debate[4][5] adding a gap in the stack when entering the
breakpoint handler allows for pushing the return address onto the stack to
easily emulate a call.
[1] http://lkml.kernel.org/r/20180726104029.7736-1-nstange@suse.de
[2] http://lkml.kernel.org/r/20190427100639.15074-1-nstange@suse.de
[3] http://lkml.kernel.org/r/3cf04e113d71c9f8e4be95fb84a510f085aa4afa.1541711457.git.jpoimboe@redhat.com
[4] http://lkml.kernel.org/r/CAHk-=wh5OpheSU8Em_Q3Hg8qw_JtoijxOdPtHru6d+5K8TWM=A@mail.gmail.com
[5] http://lkml.kernel.org/r/CAHk-=wjvQxY4DvPrJ6haPgAa6b906h=MwZXO6G8OtiTGe=N7_w@mail.gmail.com
[
Live kernel patching is not implemented on x86_32, thus the emulate
calls are only for x86_64.
]
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Nicolai Stange <nstange@suse.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: the arch/x86 maintainers <x86@kernel.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Miroslav Benes <mbenes@suse.cz>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Joe Lawrence <joe.lawrence@redhat.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Mimi Zohar <zohar@linux.ibm.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Nayna Jain <nayna@linux.ibm.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: "open list:KERNEL SELFTEST FRAMEWORK" <linux-kselftest@vger.kernel.org>
Cc: stable@vger.kernel.org
Fixes:
|
||
|
Peter Zijlstra
|
4b33dadf37 |
x86_64: Allow breakpoints to emulate call instructions
In order to allow breakpoints to emulate call instructions, they need to push
the return address onto the stack. The x86_64 int3 handler adds a small gap
to allow the stack to grow some. Use this gap to add the return address to
be able to emulate a call instruction at the breakpoint location.
These helper functions are added:
int3_emulate_jmp(): changes the location of the regs->ip to return there.
(The next two are only for x86_64)
int3_emulate_push(): to push the address onto the gap in the stack
int3_emulate_call(): push the return address and change regs->ip
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Nicolai Stange <nstange@suse.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: the arch/x86 maintainers <x86@kernel.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Miroslav Benes <mbenes@suse.cz>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Joe Lawrence <joe.lawrence@redhat.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Mimi Zohar <zohar@linux.ibm.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Nayna Jain <nayna@linux.ibm.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: "open list:KERNEL SELFTEST FRAMEWORK" <linux-kselftest@vger.kernel.org>
Cc: stable@vger.kernel.org
Fixes:
|
||
Josh Poimboeuf
|
2700fefdb2 |
x86_64: Add gap to int3 to allow for call emulation
To allow an int3 handler to emulate a call instruction, it must be able to
push a return address onto the stack. Add a gap to the stack to allow the
int3 handler to push the return address and change the return from int3 to
jump straight to the emulated called function target.
Link: http://lkml.kernel.org/r/20181130183917.hxmti5josgq4clti@treble
Link: http://lkml.kernel.org/r/20190502162133.GX2623@hirez.programming.kicks-ass.net
[
Note, this is needed to allow Live Kernel Patching to not miss calling a
patched function when tracing is enabled. -- Steven Rostedt
]
Cc: stable@vger.kernel.org
Fixes:
|
||
Aaron Lewis
|
9b5db6c762 |
kvm: nVMX: Set nested_run_pending in vmx_set_nested_state after checks complete
nested_run_pending=1 implies we have successfully entered guest mode. Move setting from external state in vmx_set_nested_state() until after all other checks are complete. Based on a patch by Aaron Lewis. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
|
Aaron Lewis
|
332d079735 |
KVM: nVMX: KVM_SET_NESTED_STATE - Tear down old EVMCS state before setting new state
Move call to nested_enable_evmcs until after free_nested() is complete. Signed-off-by: Aaron Lewis <aaronlewis@google.com> Reviewed-by: Marc Orr <marcorr@google.com> Reviewed-by: Peter Shier <pshier@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
Wang Hai
|
4abf1ee16e |
perf/x86/amd/iommu: Make the 'amd_iommu_attr_groups' symbol static
Fixes the following sparse warning:
arch/x86/events/amd/iommu.c:396:30: warning:
symbol 'amd_iommu_attr_groups' was not declared. Should it be static?
Signed-off-by: Wang Hai <wanghai26@huawei.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: acme@kernel.org
Cc: alexander.shishkin@linux.intel.com
Cc: bp@alien8.de
Cc: jolsa@redhat.com
Cc: namhyung@kernel.org
Fixes:
|
||
Andi Kleen
|
0e72499c3c |
x86/kprobes: Make trampoline_handler() global and visible
This function is referenced from assembler, so in LTO it needs to be global and visible to not be optimized away. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Link: https://lkml.kernel.org/r/20190330004743.29541-7-andi@firstfloor.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
Jia Zhang
|
81d30225bc |
x86/vdso: Remove hpet_page from vDSO
This trivial cleanup finalizes the removal of vDSO HPET support.
Fixes:
|
||
|
Linus Torvalds
|
80f232121b |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
"Highlights:
1) Support AES128-CCM ciphers in kTLS, from Vakul Garg.
2) Add fib_sync_mem to control the amount of dirty memory we allow to
queue up between synchronize RCU calls, from David Ahern.
3) Make flow classifier more lockless, from Vlad Buslov.
4) Add PHY downshift support to aquantia driver, from Heiner
Kallweit.
5) Add SKB cache for TCP rx and tx, from Eric Dumazet. This reduces
contention on SLAB spinlocks in heavy RPC workloads.
6) Partial GSO offload support in XFRM, from Boris Pismenny.
7) Add fast link down support to ethtool, from Heiner Kallweit.
8) Use siphash for IP ID generator, from Eric Dumazet.
9) Pull nexthops even further out from ipv4/ipv6 routes and FIB
entries, from David Ahern.
10) Move skb->xmit_more into a per-cpu variable, from Florian
Westphal.
11) Improve eBPF verifier speed and increase maximum program size,
from Alexei Starovoitov.
12) Eliminate per-bucket spinlocks in rhashtable, and instead use bit
spinlocks. From Neil Brown.
13) Allow tunneling with GUE encap in ipvs, from Jacky Hu.
14) Improve link partner cap detection in generic PHY code, from
Heiner Kallweit.
15) Add layer 2 encap support to bpf_skb_adjust_room(), from Alan
Maguire.
16) Remove SKB list implementation assumptions in SCTP, your's truly.
17) Various cleanups, optimizations, and simplifications in r8169
driver. From Heiner Kallweit.
18) Add memory accounting on TX and RX path of SCTP, from Xin Long.
19) Switch PHY drivers over to use dynamic featue detection, from
Heiner Kallweit.
20) Support flow steering without masking in dpaa2-eth, from Ioana
Ciocoi.
21) Implement ndo_get_devlink_port in netdevsim driver, from Jiri
Pirko.
22) Increase the strict parsing of current and future netlink
attributes, also export such policies to userspace. From Johannes
Berg.
23) Allow DSA tag drivers to be modular, from Andrew Lunn.
24) Remove legacy DSA probing support, also from Andrew Lunn.
25) Allow ll_temac driver to be used on non-x86 platforms, from Esben
Haabendal.
26) Add a generic tracepoint for TX queue timeouts to ease debugging,
from Cong Wang.
27) More indirect call optimizations, from Paolo Abeni"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1763 commits)
cxgb4: Fix error path in cxgb4_init_module
net: phy: improve pause mode reporting in phy_print_status
dt-bindings: net: Fix a typo in the phy-mode list for ethernet bindings
net: macb: Change interrupt and napi enable order in open
net: ll_temac: Improve error message on error IRQ
net/sched: remove block pointer from common offload structure
net: ethernet: support of_get_mac_address new ERR_PTR error
net: usb: smsc: fix warning reported by kbuild test robot
staging: octeon-ethernet: Fix of_get_mac_address ERR_PTR check
net: dsa: support of_get_mac_address new ERR_PTR error
net: dsa: sja1105: Fix status initialization in sja1105_get_ethtool_stats
vrf: sit mtu should not be updated when vrf netdev is the link
net: dsa: Fix error cleanup path in dsa_init_module
l2tp: Fix possible NULL pointer dereference
taprio: add null check on sched_nest to avoid potential null pointer dereference
net: mvpp2: cls: fix less than zero check on a u32 variable
net_sched: sch_fq: handle non connected flows
net_sched: sch_fq: do not assume EDT packets are ordered
net: hns3: use devm_kcalloc when allocating desc_cb
net: hns3: some cleanup for struct hns3_enet_ring
...
|
||
|
Linus Torvalds
|
400913252d |
Merge branch 'work.mount-syscalls' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull mount ABI updates from Al Viro: "The syscalls themselves, finally. That's not all there is to that stuff, but switching individual filesystems to new methods is fortunately independent from everything else, so e.g. NFS series can go through NFS tree, etc. As those conversions get done, we'll be finally able to get rid of a bunch of duplication in fs/super.c introduced in the beginning of the entire thing. I expect that to be finished in the next window..." * 'work.mount-syscalls' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: vfs: Add a sample program for the new mount API vfs: syscall: Add fspick() to select a superblock for reconfiguration vfs: syscall: Add fsmount() to create a mount for a superblock vfs: syscall: Add fsconfig() for configuring and managing a context vfs: Implement logging through fs_context vfs: syscall: Add fsopen() to prepare for superblock creation Make anon_inodes unconditional teach move_mount(2) to work with OPEN_TREE_CLONE vfs: syscall: Add move_mount(2) to move mounts around vfs: syscall: Add open_tree(2) to reference or clone a mount |
||
|
Linus Torvalds
|
02aff8db64 |
audit/stable-5.2 PR 20190507
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Merge tag 'audit-pr-20190507' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
Pull audit updates from Paul Moore:
"We've got a reasonably broad set of audit patches for the v5.2 merge
window, the highlights are below:
- The biggest change, and the source of all the arch/* changes, is
the patchset from Dmitry to help enable some of the work he is
doing around PTRACE_GET_SYSCALL_INFO.
To be honest, including this in the audit tree is a bit of a
stretch, but it does help move audit a little further along towards
proper syscall auditing for all arches, and everyone else seemed to
agree that audit was a "good" spot for this to land (or maybe they
just didn't want to merge it? dunno.).
- We can now audit time/NTP adjustments.
- We continue the work to connect associated audit records into a
single event"
* tag 'audit-pr-20190507' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit: (21 commits)
audit: fix a memory leak bug
ntp: Audit NTP parameters adjustment
timekeeping: Audit clock adjustments
audit: purge unnecessary list_empty calls
audit: link integrity evm_write_xattrs record to syscall event
syscall_get_arch: add "struct task_struct *" argument
unicore32: define syscall_get_arch()
Move EM_UNICORE to uapi/linux/elf-em.h
nios2: define syscall_get_arch()
nds32: define syscall_get_arch()
Move EM_NDS32 to uapi/linux/elf-em.h
m68k: define syscall_get_arch()
hexagon: define syscall_get_arch()
Move EM_HEXAGON to uapi/linux/elf-em.h
h8300: define syscall_get_arch()
c6x: define syscall_get_arch()
arc: define syscall_get_arch()
Move EM_ARCOMPACT and EM_ARCV2 to uapi/linux/elf-em.h
audit: Make audit_log_cap and audit_copy_inode static
audit: connect LOGIN record to its syscall record
...
|
||
David S. Miller
|
a9e41a5296 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Minor conflict with the DSA legacy code removal. Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|
Linus Torvalds
|
cf482a49af |
Driver core/kobject patches for 5.2-rc1
Here is the "big" set of driver core patches for 5.2-rc1
There are a number of ACPI patches in here as well, as Rafael said they
should go through this tree due to the driver core changes they
required. They have all been acked by the ACPI developers.
There are also a number of small subsystem-specific changes in here, due
to some changes to the kobject core code. Those too have all been acked
by the various subsystem maintainers.
As for content, it's pretty boring outside of the ACPI changes:
- spdx cleanups
- kobject documentation updates
- default attribute groups for kobjects
- other minor kobject/driver core fixes
All have been in linux-next for a while with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core/kobject updates from Greg KH:
"Here is the "big" set of driver core patches for 5.2-rc1
There are a number of ACPI patches in here as well, as Rafael said
they should go through this tree due to the driver core changes they
required. They have all been acked by the ACPI developers.
There are also a number of small subsystem-specific changes in here,
due to some changes to the kobject core code. Those too have all been
acked by the various subsystem maintainers.
As for content, it's pretty boring outside of the ACPI changes:
- spdx cleanups
- kobject documentation updates
- default attribute groups for kobjects
- other minor kobject/driver core fixes
All have been in linux-next for a while with no reported issues"
* tag 'driver-core-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (47 commits)
kobject: clean up the kobject add documentation a bit more
kobject: Fix kernel-doc comment first line
kobject: Remove docstring reference to kset
firmware_loader: Fix a typo ("syfs" -> "sysfs")
kobject: fix dereference before null check on kobj
Revert "driver core: platform: Fix the usage of platform device name(pdev->name)"
init/config: Do not select BUILD_BIN2C for IKCONFIG
Provide in-kernel headers to make extending kernel easier
kobject: Improve doc clarity kobject_init_and_add()
kobject: Improve docs for kobject_add/del
driver core: platform: Fix the usage of platform device name(pdev->name)
livepatch: Replace klp_ktype_patch's default_attrs with groups
cpufreq: schedutil: Replace default_attrs field with groups
padata: Replace padata_attr_type default_attrs field with groups
irqdesc: Replace irq_kobj_type's default_attrs field with groups
net-sysfs: Replace ktype default_attrs field with groups
block: Replace all ktype default_attrs with groups
samples/kobject: Replace foo_ktype's default_attrs field with groups
kobject: Add support for default attribute groups to kobj_type
driver core: Postpone DMA tear-down until after devres release for probe failure
...
|
||
|
Linus Torvalds
|
eac7078a0f |
pidfd patches for v5.2-rc1
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||
|
Linus Torvalds
|
41bc10cabe |
stream_open related patches for Linux 5.2
https://lore.kernel.org/linux-fsdevel/CAHk-=wg1tFzcaX2v9Z91vPJiBR486ddW5MtgDL02-fOen2F0Aw@mail.gmail.com/T/#m5b2d9ad3aeacea4bd6aa1964468ac074bf3aa5bf
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Merge tag 'stream_open-5.2' of https://lab.nexedi.com/kirr/linux
Pull stream_open conversion from Kirill Smelkov:
- remove unnecessary double nonseekable_open from drivers/char/dtlk.c
as noticed by Pavel Machek while reviewing nonseekable_open ->
stream_open mass conversion.
- the mass conversion patch promised in commit
|
||
|
Linus Torvalds
|
8ff468c29e |
Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 FPU state handling updates from Borislav Petkov: "This contains work started by Rik van Riel and brought to fruition by Sebastian Andrzej Siewior with the main goal to optimize when to load FPU registers: only when returning to userspace and not on every context switch (while the task remains in the kernel). In addition, this optimization makes kernel_fpu_begin() cheaper by requiring registers saving only on the first invocation and skipping that in following ones. What is more, this series cleans up and streamlines many aspects of the already complex FPU code, hopefully making it more palatable for future improvements and simplifications. Finally, there's a __user annotations fix from Jann Horn" * 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (29 commits) x86/fpu: Fault-in user stack if copy_fpstate_to_sigframe() fails x86/pkeys: Add PKRU value to init_fpstate x86/fpu: Restore regs in copy_fpstate_to_sigframe() in order to use the fastpath x86/fpu: Add a fastpath to copy_fpstate_to_sigframe() x86/fpu: Add a fastpath to __fpu__restore_sig() x86/fpu: Defer FPU state load until return to userspace x86/fpu: Merge the two code paths in __fpu__restore_sig() x86/fpu: Restore from kernel memory on the 64-bit path too x86/fpu: Inline copy_user_to_fpregs_zeroing() x86/fpu: Update xstate's PKRU value on write_pkru() x86/fpu: Prepare copy_fpstate_to_sigframe() for TIF_NEED_FPU_LOAD x86/fpu: Always store the registers in copy_fpstate_to_sigframe() x86/entry: Add TIF_NEED_FPU_LOAD x86/fpu: Eager switch PKRU state x86/pkeys: Don't check if PKRU is zero before writing it x86/fpu: Only write PKRU if it is different from current x86/pkeys: Provide *pkru() helpers x86/fpu: Use a feature number instead of mask in two more helpers x86/fpu: Make __raw_xsave_addr() use a feature number instead of mask x86/fpu: Add an __fpregs_load_activate() internal helper ... |
||
|
David S. Miller
|
982e826d31 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Daniel Borkmann says: ==================== pull-request: bpf 2019-05-06 The following pull-request contains BPF updates for your *net* tree. The main changes are: 1) Two x32 JIT fixes: one which has buggy signed comparisons in 64 bit conditional jumps and another one for 64 bit negation, both from Wang. ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|
Linus Torvalds
|
0968621917 |
Printk changes for 5.2
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||
|
Linus Torvalds
|
81ff5d2cba |
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto update from Herbert Xu: "API: - Add support for AEAD in simd - Add fuzz testing to testmgr - Add panic_on_fail module parameter to testmgr - Use per-CPU struct instead multiple variables in scompress - Change verify API for akcipher Algorithms: - Convert x86 AEAD algorithms over to simd - Forbid 2-key 3DES in FIPS mode - Add EC-RDSA (GOST 34.10) algorithm Drivers: - Set output IV with ctr-aes in crypto4xx - Set output IV in rockchip - Fix potential length overflow with hashing in sun4i-ss - Fix computation error with ctr in vmx - Add SM4 protected keys support in ccree - Remove long-broken mxc-scc driver - Add rfc4106(gcm(aes)) cipher support in cavium/nitrox" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (179 commits) crypto: ccree - use a proper le32 type for le32 val crypto: ccree - remove set but not used variable 'du_size' crypto: ccree - Make cc_sec_disable static crypto: ccree - fix spelling mistake "protedcted" -> "protected" crypto: caam/qi2 - generate hash keys in-place crypto: caam/qi2 - fix DMA mapping of stack memory crypto: caam/qi2 - fix zero-length buffer DMA mapping crypto: stm32/cryp - update to return iv_out crypto: stm32/cryp - remove request mutex protection crypto: stm32/cryp - add weak key check for DES crypto: atmel - remove set but not used variable 'alg_name' crypto: picoxcell - Use dev_get_drvdata() crypto: crypto4xx - get rid of redundant using_sd variable crypto: crypto4xx - use sync skcipher for fallback crypto: crypto4xx - fix cfb and ofb "overran dst buffer" issues crypto: crypto4xx - fix ctr-aes missing output IV crypto: ecrdsa - select ASN1 and OID_REGISTRY for EC-RDSA crypto: ux500 - use ccflags-y instead of CFLAGS_<basename>.o crypto: ccree - handle tee fips error during power management resume crypto: ccree - add function to handle cryptocell tee fips error ... |
||
|
Linus Torvalds
|
ffa6f55eb6 |
Merge branch 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RAS updates from Borislav Petkov: - Support for varying MCA bank numbers per CPU: this is in preparation for future CPU enablement (Yazen Ghannam) - MCA banks read race fix (Tony Luck) - Facility to filter MCEs which should not be logged (Yazen Ghannam) - The usual round of cleanups and fixes * 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/MCE/AMD: Don't report L1 BTB MCA errors on some family 17h models x86/MCE: Add an MCE-record filtering function RAS/CEC: Increment cec_entered under the mutex lock x86/mce: Fix debugfs_simple_attr.cocci warnings x86/mce: Remove mce_report_event() x86/mce: Handle varying MCA bank counts x86/mce: Fix machine_check_poll() tests for error types MAINTAINERS: Fix file pattern for X86 MCE INFRASTRUCTURE x86/MCE: Group AMD function prototypes in <asm/mce.h> |
||
|
Linus Torvalds
|
8f5e823f91 |
Power management updates for 5.2-rc1
- Fix the handling of Performance and Energy Bias Hint (EPB) on
Intel processors and expose it to user space via sysfs to avoid
having to access it through the generic MSR I/F (Rafael Wysocki).
- Improve the handling of global turbo changes made by the platform
firmware in the intel_pstate driver (Rafael Wysocki).
- Convert some slow-path static_cpu_has() callers to boot_cpu_has()
in cpufreq (Borislav Petkov).
- Fix the frequency calculation loop in the armada-37xx cpufreq
driver (Gregory CLEMENT).
- Fix possible object reference leaks in multuple cpufreq drivers
(Wen Yang).
- Fix kerneldoc comment in the centrino cpufreq driver (dongjian).
- Clean up the ACPI and maple cpufreq drivers (Viresh Kumar, Mohan
Kumar).
- Add support for lx2160a and ls1028a to the qoriq cpufreq driver
(Vabhav Sharma, Yuantian Tang).
- Fix kobject memory leak in the cpufreq core (Viresh Kumar).
- Simplify the IOwait boosting in the schedutil cpufreq governor
and rework the TSC cpufreq notifier on x86 (Rafael Wysocki).
- Clean up the cpufreq core and statistics code (Yue Hu, Kyle Lin).
- Improve the cpufreq documentation, add SPDX license tags to
some PM documentation files and unify copyright notices in
them (Rafael Wysocki).
- Add support for "CPU" domains to the generic power domains (genpd)
framework and provide low-level PSCI firmware support for that
feature (Ulf Hansson).
- Rearrange the PSCI firmware support code and add support for
SYSTEM_RESET2 to it (Ulf Hansson, Sudeep Holla).
- Improve genpd support for devices in multiple power domains (Ulf
Hansson).
- Unify target residency for the AFTR and coupled AFTR states in the
exynos cpuidle driver (Marek Szyprowski).
- Introduce new helper routine in the operating performance points
(OPP) framework (Andrew-sh.Cheng).
- Add support for passing on-die termination (ODT) and auto power
down parameters from the kernel to Trusted Firmware-A (TF-A) to
the rk3399_dmc devfreq driver (Enric Balletbo i Serra).
- Add tracing to devfreq (Lukasz Luba).
- Make the exynos-bus devfreq driver suspend all devices on system
shutdown (Marek Szyprowski).
- Fix a few minor issues in the devfreq subsystem and clean it up
somewhat (Enric Balletbo i Serra, MyungJoo Ham, Rob Herring,
Saravana Kannan, Yangtao Li).
- Improve system wakeup diagnostics (Stephen Boyd).
- Rework filesystem sync messages emitted during system suspend and
hibernation (Harry Pan).
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Merge tag 'pm-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"These fix the (Intel-specific) Performance and Energy Bias Hint (EPB)
handling and expose it to user space via sysfs, fix and clean up
several cpufreq drivers, add support for two new chips to the qoriq
cpufreq driver, fix, simplify and clean up the cpufreq core and the
schedutil governor, add support for "CPU" domains to the generic power
domains (genpd) framework and provide low-level PSCI firmware support
for that feature, fix the exynos cpuidle driver and fix a couple of
issues in the devfreq subsystem and clean it up.
Specifics:
- Fix the handling of Performance and Energy Bias Hint (EPB) on Intel
processors and expose it to user space via sysfs to avoid having to
access it through the generic MSR I/F (Rafael Wysocki).
- Improve the handling of global turbo changes made by the platform
firmware in the intel_pstate driver (Rafael Wysocki).
- Convert some slow-path static_cpu_has() callers to boot_cpu_has()
in cpufreq (Borislav Petkov).
- Fix the frequency calculation loop in the armada-37xx cpufreq
driver (Gregory CLEMENT).
- Fix possible object reference leaks in multuple cpufreq drivers
(Wen Yang).
- Fix kerneldoc comment in the centrino cpufreq driver (dongjian).
- Clean up the ACPI and maple cpufreq drivers (Viresh Kumar, Mohan
Kumar).
- Add support for lx2160a and ls1028a to the qoriq cpufreq driver
(Vabhav Sharma, Yuantian Tang).
- Fix kobject memory leak in the cpufreq core (Viresh Kumar).
- Simplify the IOwait boosting in the schedutil cpufreq governor and
rework the TSC cpufreq notifier on x86 (Rafael Wysocki).
- Clean up the cpufreq core and statistics code (Yue Hu, Kyle Lin).
- Improve the cpufreq documentation, add SPDX license tags to some PM
documentation files and unify copyright notices in them (Rafael
Wysocki).
- Add support for "CPU" domains to the generic power domains (genpd)
framework and provide low-level PSCI firmware support for that
feature (Ulf Hansson).
- Rearrange the PSCI firmware support code and add support for
SYSTEM_RESET2 to it (Ulf Hansson, Sudeep Holla).
- Improve genpd support for devices in multiple power domains (Ulf
Hansson).
- Unify target residency for the AFTR and coupled AFTR states in the
exynos cpuidle driver (Marek Szyprowski).
- Introduce new helper routine in the operating performance points
(OPP) framework (Andrew-sh.Cheng).
- Add support for passing on-die termination (ODT) and auto power
down parameters from the kernel to Trusted Firmware-A (TF-A) to the
rk3399_dmc devfreq driver (Enric Balletbo i Serra).
- Add tracing to devfreq (Lukasz Luba).
- Make the exynos-bus devfreq driver suspend all devices on system
shutdown (Marek Szyprowski).
- Fix a few minor issues in the devfreq subsystem and clean it up
somewhat (Enric Balletbo i Serra, MyungJoo Ham, Rob Herring,
Saravana Kannan, Yangtao Li).
- Improve system wakeup diagnostics (Stephen Boyd).
- Rework filesystem sync messages emitted during system suspend and
hibernation (Harry Pan)"
* tag 'pm-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (72 commits)
cpufreq: Fix kobject memleak
cpufreq: armada-37xx: fix frequency calculation for opp
cpufreq: centrino: Fix centrino_setpolicy() kerneldoc comment
cpufreq: qoriq: add support for lx2160a
x86: tsc: Rework time_cpufreq_notifier()
PM / Domains: Allow to attach a CPU via genpd_dev_pm_attach_by_id|name()
PM / Domains: Search for the CPU device outside the genpd lock
PM / Domains: Drop unused in-parameter to some genpd functions
PM / Domains: Use the base device for driver_deferred_probe_check_state()
cpufreq: qoriq: Add ls1028a chip support
PM / Domains: Enable genpd_dev_pm_attach_by_id|name() for single PM domain
PM / Domains: Allow OF lookup for multi PM domain case from ->attach_dev()
PM / Domains: Don't kfree() the virtual device in the error path
cpufreq: Move ->get callback check outside of __cpufreq_get()
PM / Domains: remove unnecessary unlikely()
cpufreq: Remove needless bios_limit check in show_bios_limit()
drivers/cpufreq/acpi-cpufreq.c: This fixes the following checkpatch warning
firmware/psci: add support for SYSTEM_RESET2
PM / devfreq: add tracing for scheduling work
trace: events: add devfreq trace event file
...
|
||
|
Linus Torvalds
|
59df1c2bde |
ACPI updates for 5.2-rc1
- Convert the ACPI documentation in the kernel source tree to the
.rst format and split it into the admin guide, driver API and
firmware guide parts (Changbin Du).
- Add a PRP0001 usage example to the ACPI documentation (Thomas
Preston).
- Switch over the users of the acpi_dev_get_first_match_name()
library function which turned out to be problematic to a new,
better one called acpi_dev_get_first_match_dev() (Andy Shevchenko,
YueHaibing).
- Update the ACPICA code in the kernel to upstream release 20190405
including:
* Null pointer dereference check in acpi_ns_delete_node() (Erik
Schmauss).
* Multiple macro and function name changes (Bob Moore).
* Predefined operation region name fix (Erik Schmauss).
- Fix hibernation issue on systems using the Baytrail and
Cherrytrail Intel SoCs introduced during the 4.20 development
cycle (Hans de Goede).
- Add Sony VPCEH3U1E to the backlight quirk list (Zhang Rui).
- Fix button handling during system resume (Zhang Rui).
- Add a device PM diagnostic message (Rafael Wysocki).
- Clean up the code, comments and white space in multiple places
(Bjorn Helgaas, Gustavo Silva, Kefeng Wang).
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Merge tag 'acpi-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki:
"These rearrange the ACPI documentation by converting it to the .rst
format and splitting it into clear categories (admin guide, driver
API, firmware guide), switch over multiple users of a problematic
library function to a new better one, update the ACPICA code in the
kernel to a new upstream release, fix a few issues, improve power
device management diagnostics and do some cleanups.
Specifics:
- Convert the ACPI documentation in the kernel source tree to the
.rst format and split it into the admin guide, driver API and
firmware guide parts (Changbin Du).
- Add a PRP0001 usage example to the ACPI documentation (Thomas
Preston).
- Switch over the users of the acpi_dev_get_first_match_name()
library function which turned out to be problematic to a new,
better one called acpi_dev_get_first_match_dev() (Andy Shevchenko,
YueHaibing).
- Update the ACPICA code in the kernel to upstream release 20190405
including:
* Null pointer dereference check in acpi_ns_delete_node() (Erik
Schmauss).
* Multiple macro and function name changes (Bob Moore).
* Predefined operation region name fix (Erik Schmauss).
- Fix hibernation issue on systems using the Baytrail and Cherrytrail
Intel SoCs introduced during the 4.20 development cycle (Hans de
Goede).
- Add Sony VPCEH3U1E to the backlight quirk list (Zhang Rui).
- Fix button handling during system resume (Zhang Rui).
- Add a device PM diagnostic message (Rafael Wysocki).
- Clean up the code, comments and white space in multiple places
(Bjorn Helgaas, Gustavo Silva, Kefeng Wang)"
* tag 'acpi-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (53 commits)
Documentation: ACPI: move video_extension.txt to firmware-guide/acpi and convert to reST
Documentation: ACPI: move ssdt-overlays.txt to admin-guide/acpi and convert to reST
Documentation: ACPI: move lpit.txt to firmware-guide/acpi and convert to reST
Documentation: ACPI: move cppc_sysfs.txt to admin-guide/acpi and convert to reST
Documentation: ACPI: move apei/einj.txt to firmware-guide/acpi and convert to reST
Documentation: ACPI: move apei/output_format.txt to firmware-guide/acpi and convert to reST
Documentation: ACPI: move aml-debugger.txt to firmware-guide/acpi and convert to reST
Documentation: ACPI: move method-tracing.txt to firmware-guide/acpi and convert to rsST
Documentation: ACPI: move debug.txt to firmware-guide/acpi and convert to reST
Documentation: ACPI: move dsd/data-node-references.txt to firmware-guide/acpi and convert to reST
Documentation: ACPI: move dsd/graph.txt to firmware-guide/acpi and convert to reST
Documentation: ACPI: move acpi-lid.txt to firmware-guide/acpi and convert to reST
Documentation: ACPI: move i2c-muxes.txt to firmware-guide/acpi and convert to reST
Documentation: ACPI: move dsdt-override.txt to admin-guide/acpi and convert to reST
Documentation: ACPI: move initrd_table_override.txt to admin-guide/acpi and convert to reST
Documentation: ACPI: move method-customizing.txt to firmware-guide/acpi and convert to reST
Documentation: ACPI: move gpio-properties.txt to firmware-guide/acpi and convert to reST
Documentation: ACPI: move DSD-properties-rules.txt to firmware-guide/acpi and covert to reST
Documentation: ACPI: move scan_handlers.txt to driver-api/acpi and convert to reST
Documentation: ACPI: move linuxized-acpica.txt to driver-api/acpi and convert to reST
...
|
||
|
Linus Torvalds
|
dd4e5d6106 |
Remove Mysterious Macro Intended to Obscure Weird Behaviours (mmiowb())
Remove mmiowb() from the kernel memory barrier API and instead, for architectures that need it, hide the barrier inside spin_unlock() when MMIO has been performed inside the critical section. -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEPxTL6PPUbjXGY88ct6xw3ITBYzQFAlzMFaUACgkQt6xw3ITB YzRICQgAiv7wF/yIbBhDOmCNCAKDO59chvFQWxXWdGk/aAB56kwKAMXJgLOvlMG/ VRuuLyParTFQETC3jaxKgnO/1hb+PZLDt2Q2KqixtjIzBypKUPWvK2sf6THhSRF1 GK0DBVUd1rCrWrR815+SPb8el4xXtdBzvAVB+Fx35PXVNpdRdqCkK+EQ6UnXGokm rXXHbnfsnquBDtmb4CR4r2beH+aNElXbdt0Kj8VcE5J7f7jTdW3z6Q9WFRvdKmK7 yrsxXXB2w/EsWXOwFp0SLTV5+fgeGgTvv8uLjDw+SG6t0E0PebxjNAflT7dPrbYL WecjKC9WqBxrGY+4ew6YJP70ijLBCw== =aC8m -----END PGP SIGNATURE----- Merge tag 'arm64-mmiowb' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull mmiowb removal from Will Deacon: "Remove Mysterious Macro Intended to Obscure Weird Behaviours (mmiowb()) Remove mmiowb() from the kernel memory barrier API and instead, for architectures that need it, hide the barrier inside spin_unlock() when MMIO has been performed inside the critical section. The only relatively recent changes have been addressing review comments on the documentation, which is in a much better shape thanks to the efforts of Ben and Ingo. I was initially planning to split this into two pull requests so that you could run the coccinelle script yourself, however it's been plain sailing in linux-next so I've just included the whole lot here to keep things simple" * tag 'arm64-mmiowb' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (23 commits) docs/memory-barriers.txt: Update I/O section to be clearer about CPU vs thread docs/memory-barriers.txt: Fix style, spacing and grammar in I/O section arch: Remove dummy mmiowb() definitions from arch code net/ethernet/silan/sc92031: Remove stale comment about mmiowb() i40iw: Redefine i40iw_mmiowb() to do nothing scsi/qla1280: Remove stale comment about mmiowb() drivers: Remove explicit invocations of mmiowb() drivers: Remove useless trailing comments from mmiowb() invocations Documentation: Kill all references to mmiowb() riscv/mmiowb: Hook up mmwiob() implementation to asm-generic code powerpc/mmiowb: Hook up mmwiob() implementation to asm-generic code ia64/mmiowb: Add unconditional mmiowb() to arch_spin_unlock() mips/mmiowb: Add unconditional mmiowb() to arch_spin_unlock() sh/mmiowb: Add unconditional mmiowb() to arch_spin_unlock() m68k/io: Remove useless definition of mmiowb() nds32/io: Remove useless definition of mmiowb() x86/io: Remove useless definition of mmiowb() arm64/io: Remove useless definition of mmiowb() ARM/io: Remove useless definition of mmiowb() mmiowb: Hook up mmiowb helpers to spinlocks and generic I/O accessors ... |
||
|
Linus Torvalds
|
fdafe5d1ff |
Merge branch 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 microcode loading update from Borislav Petkov: "A nice Intel microcode blob loading cleanup which gets rid of the ugly memcpy wrappers and switches the driver to use the iov_iter API. By Jann Horn. In addition, the /dev/cpu/microcode interface is finally deprecated as it is inadequate for the same reasons the late microcode loading is" * 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/microcode: Deprecate MICROCODE_OLD_INTERFACE x86/microcode: Fix the ancient deprecated microcode loading method x86/microcode/intel: Refactor Intel microcode blob loading |
||
|
Linus Torvalds
|
948a64995a |
Merge branch 'x86-topology-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 topology updates from Ingo Molnar: "Two main changes: preparatory changes for Intel multi-die topology support, plus a syslog message tweak" * 'x86-topology-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/topology: Make DEBUG_HOTPLUG_CPU0 pr_info() more descriptive x86/smpboot: Rename match_die() to match_pkg() topology: Simplify cputopology.txt formatting and wording x86/topology: Fix documentation typo |
||
|
Linus Torvalds
|
db10ad041b |
Merge branch 'x86-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 timer updates from Ingo Molnar: "Two changes: an LTO improvement, plus the new 'nowatchdog' boot option to disable the clocksource watchdog" * 'x86-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/timer: Don't inline __const_udelay() x86/tsc: Add option to disable tsc clocksource watchdog |
||
|
Linus Torvalds
|
ba3934de55 |
Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 platform updates from Ingo Molnar: "Smaller update for Hyper-V to support EOI assist, plus LTO fixes" * 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/kvm: Make steal_time visible x86/hyperv: Make hv_vcpu_is_preempted() visible x86/hyper-v: Implement EOI assist |
||
|
Linus Torvalds
|
0bc40e549a |
Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mm updates from Ingo Molnar:
"The changes in here are:
- text_poke() fixes and an extensive set of executability lockdowns,
to (hopefully) eliminate the last residual circumstances under
which we are using W|X mappings even temporarily on x86 kernels.
This required a broad range of surgery in text patching facilities,
module loading, trampoline handling and other bits.
- tweak page fault messages to be more informative and more
structured.
- remove DISCONTIGMEM support on x86-32 and make SPARSEMEM the
default.
- reduce KASLR granularity on 5-level paging kernels from 512 GB to
1 GB.
- misc other changes and updates"
* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (36 commits)
x86/mm: Initialize PGD cache during mm initialization
x86/alternatives: Add comment about module removal races
x86/kprobes: Use vmalloc special flag
x86/ftrace: Use vmalloc special flag
bpf: Use vmalloc special flag
modules: Use vmalloc special flag
mm/vmalloc: Add flag for freeing of special permsissions
mm/hibernation: Make hibernation handle unmapped pages
x86/mm/cpa: Add set_direct_map_*() functions
x86/alternatives: Remove the return value of text_poke_*()
x86/jump-label: Remove support for custom text poker
x86/modules: Avoid breaking W^X while loading modules
x86/kprobes: Set instruction page as executable
x86/ftrace: Set trampoline pages as executable
x86/kgdb: Avoid redundant comparison of patched code
x86/alternatives: Use temporary mm for text poking
x86/alternatives: Initialize temporary mm for patching
fork: Provide a function for copying init_mm
uprobes: Initialize uprobes earlier
x86/mm: Save debug registers when loading a temporary mm
...
|
||
|
Linus Torvalds
|
e913c4a4c2 |
Merge branch 'x86-kdump-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 kdump update from Ingo Molnar:
"This includes two changes:
- Raise the crash kernel reservation limit from from ~896MB to ~4GB.
Only very old (and already known-broken) kexec-tools is supposed to
be affected by this negatively.
- Allow higher than 4GB crash kernel allocations when low allocations
fail"
* 'x86-kdump-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/kdump: Fall back to reserve high crashkernel memory
x86/kdump: Have crashkernel=X reserve under 4G by default
|
||
|
Linus Torvalds
|
8f14772703 |
Merge branch 'x86-irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 irq updates from Ingo Molnar:
"Here are the main changes in this tree:
- Introduce x86-64 IRQ/exception/debug stack guard pages to detect
stack overflows immediately and deterministically.
- Clean up over a decade worth of cruft accumulated.
The outcome of this should be more clear-cut faults/crashes when any
of the low level x86 CPU stacks overflow, instead of silent memory
corruption and sporadic failures much later on"
* 'x86-irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (33 commits)
x86/irq: Fix outdated comments
x86/irq/64: Remove stack overflow debug code
x86/irq/64: Remap the IRQ stack with guard pages
x86/irq/64: Split the IRQ stack into its own pages
x86/irq/64: Init hardirq_stack_ptr during CPU hotplug
x86/irq/32: Handle irq stack allocation failure proper
x86/irq/32: Invoke irq_ctx_init() from init_IRQ()
x86/irq/64: Rename irq_stack_ptr to hardirq_stack_ptr
x86/irq/32: Rename hard/softirq_stack to hard/softirq_stack_ptr
x86/irq/32: Make irq stack a character array
x86/irq/32: Define IRQ_STACK_SIZE
x86/dumpstack/64: Speedup in_exception_stack()
x86/exceptions: Split debug IST stack
x86/exceptions: Enable IST guard pages
x86/exceptions: Disconnect IST index and stack order
x86/cpu: Remove orig_ist array
x86/cpu: Prepare TSS.IST setup for guard pages
x86/dumpstack/64: Use cpu_entry_area instead of orig_ist
x86/irq/64: Use cpu entry area instead of orig_ist
x86/traps: Use cpu_entry_area instead of orig_ist
...
|
||
|
Linus Torvalds
|
53f8b081c1 |
Merge branch 'x86-entry-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 entry cleanup from Ingo Molnar: "A single commit that removes a redundant complication from preempt-schedule handling in the x86 entry code" * 'x86-entry-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/entry: Remove unneeded need_resched() loop |
||
|
Linus Torvalds
|
31a4319b68 |
Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpu updates from Ingo Molnar: "Two changes: a Hygon CPU fix, and an optimization Centaur CPUs" * 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/power: Optimize C3 entry on Centaur CPUs x86/CPU/hygon: Fix phys_proc_id calculation logic for multi-die processors |
||
|
Linus Torvalds
|
46e80e6c3d |
Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cleanups from Ingo Molnar: "A handful of cleanups: dma-ops cleanups, missing boot time kcalloc() check, a Sparse fix and use struct_size() to simplify a vzalloc() call" * 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/pci: Clean up usage of X86_DEV_DMA_OPS x86/Kconfig: Remove the unused X86_DMA_REMAP KConfig symbol x86/kexec/crash: Use struct_size() in vzalloc() x86/mm/tlb: Define LOADED_MM_SWITCHING with pointer-sized number x86/platform/uv: Fix missing checks of kcalloc() return values |
||
|
Linus Torvalds
|
82ac4043ca |
Merge branch 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cache QoS updates from Ingo Molnar: "An RDT cleanup and a fix for RDT initialization of new resource groups" * 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/resctrl: Initialize a new resource group with default MBA values x86/resctrl: Move per RDT domain initialization to a separate function |
||
|
Linus Torvalds
|
75571d822d |
Merge branch 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 build updates from Ingo Molnar:
"Misc updates:
- Add link flag quirk to solve LLVM linker bug that removes local
relocations, causing KASLR boot failures.
- Update the defconfigs to remove archaic partition table support
- Fix kernel growing pains: we had a bug in relocs.c handling section
header table entries count larger than 0xff00 (~65k), which can
happen with the -ffunction-sections flag, causing a build failure
with a cryptic error message. Add support for detecting the limit
and using the ELF protocol that extends the sections table via
->sh_size. The new limit is now much larger - over a billion
entries?"
* 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/tools/relocs: Fix big section header tables
x86/defconfig: Remove archaic partition tables support
x86/build: Keep local relocations with ld.lld
|
||
|
Linus Torvalds
|
f725492dd1 |
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 asm updates from Ingo Molnar:
"This includes the following changes:
- cpu_has() cleanups
- sync_bitops.h modernization to the rmwcc.h facility, similarly to
bitops.h
- continued LTO annotations/fixes
- misc cleanups and smaller cleanups"
* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/um/vdso: Drop unnecessary cc-ldoption
x86/vdso: Rename variable to fix -Wshadow warning
x86/cpu/amd: Exclude 32bit only assembler from 64bit build
x86/asm: Mark all top level asm statements as .text
x86/build/vdso: Add FORCE to the build rule of %.so
x86/asm: Modernize sync_bitops.h
x86/mm: Convert some slow-path static_cpu_has() callers to boot_cpu_has()
x86: Convert some slow-path static_cpu_has() callers to boot_cpu_has()
x86/asm: Clarify static_cpu_has()'s intended use
x86/uaccess: Fix implicit cast of __user pointer
x86/cpufeature: Remove __pure attribute to _static_cpu_has()
|
||
|
Linus Torvalds
|
80e77644ef |
Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 apic update from Ingo Molnar: "A single commit which unifies the unnecessarily diverged implementations of APIC timer initialization. As a result the max_delta parameter is now consistently taken into account" * 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/apic: Unify duplicated local apic timer clockevent initialization |
||
|
Linus Torvalds
|
90489a72fb |
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Ingo Molnar:
"The main kernel changes were:
- add support for Intel's "adaptive PEBS v4" - which embedds LBS data
in PEBS records and can thus batch up and reduce the IRQ (NMI) rate
significantly - reducing overhead and making call-graph profiling
less intrusive.
- add Intel CPU core and uncore support updates for Tremont, Icelake,
- extend the x86 PMU constraints scheduler with 'constraint ranges'
to better support Icelake hw constraints,
- make x86 call-chain support work better with CONFIG_FRAME_POINTER=y
- misc other changes
Tooling changes:
- updates to the main tools: 'perf record', 'perf trace', 'perf
stat'
- updated Intel and S/390 vendor events
- libtraceevent updates
- misc other updates and fixes"
* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (69 commits)
perf/x86: Make perf callchains work without CONFIG_FRAME_POINTER
watchdog: Fix typo in comment
perf/x86/intel: Add Tremont core PMU support
perf/x86/intel/uncore: Add Intel Icelake uncore support
perf/x86/msr: Add Icelake support
perf/x86/intel/rapl: Add Icelake support
perf/x86/intel/cstate: Add Icelake support
perf/x86/intel: Add Icelake support
perf/x86: Support constraint ranges
perf/x86/lbr: Avoid reading the LBRs when adaptive PEBS handles them
perf/x86/intel: Support adaptive PEBS v4
perf/x86/intel/ds: Extract code of event update in short period
perf/x86/intel: Extract memory code PEBS parser for reuse
perf/x86: Support outputting XMM registers
perf/x86/intel: Force resched when TFA sysctl is modified
perf/core: Add perf_pmu_resched() as global function
perf/headers: Fix stale comment for struct perf_addr_filter
perf/core: Make perf_swevent_init_cpu() static
perf/x86: Add sanity checks to x86_schedule_events()
perf/x86: Optimize x86_schedule_events()
...
|
||
|
Linus Torvalds
|
007dc78fea |
Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
"Here are the locking changes in this cycle:
- rwsem unification and simpler micro-optimizations to prepare for
more intrusive (and more lucrative) scalability improvements in
v5.3 (Waiman Long)
- Lockdep irq state tracking flag usage cleanups (Frederic
Weisbecker)
- static key improvements (Jakub Kicinski, Peter Zijlstra)
- misc updates, cleanups and smaller fixes"
* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (26 commits)
locking/lockdep: Remove unnecessary unlikely()
locking/static_key: Don't take sleeping locks in __static_key_slow_dec_deferred()
locking/static_key: Factor out the fast path of static_key_slow_dec()
locking/static_key: Add support for deferred static branches
locking/lockdep: Test all incompatible scenarios at once in check_irq_usage()
locking/lockdep: Avoid bogus Clang warning
locking/lockdep: Generate LOCKF_ bit composites
locking/lockdep: Use expanded masks on find_usage_*() functions
locking/lockdep: Map remaining magic numbers to lock usage mask names
locking/lockdep: Move valid_state() inside CONFIG_TRACE_IRQFLAGS && CONFIG_PROVE_LOCKING
locking/rwsem: Prevent unneeded warning during locking selftest
locking/rwsem: Optimize rwsem structure for uncontended lock acquisition
locking/rwsem: Enable lock event counting
locking/lock_events: Don't show pvqspinlock events on bare metal
locking/lock_events: Make lock_events available for all archs & other locks
locking/qspinlock_stat: Introduce generic lockevent_*() counting APIs
locking/rwsem: Enhance DEBUG_RWSEMS_WARN_ON() macro
locking/rwsem: Add debug check for __down_read*()
locking/rwsem: Micro-optimize rwsem_try_read_lock_unqueued()
locking/rwsem: Move rwsem internal function declarations to rwsem-xadd.h
...
|
||
|
Linus Torvalds
|
d90dcc1f14 |
Merge branch 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI updates from Ingo Molnar:
"The changes in this cycle were:
- Squash a spurious warning when using the EFI framebuffer on a
non-EFI boot
- Use DMI data to annotate RAS memory errors on ARM just like we do
on Intel
- Followup cleanups for DMI
- libstub Makefile cleanups"
* 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi/libstub/arm: Omit unneeded stripping of ksymtab/kcrctab sections
efi: Unify DMI setup code over the arm/arm64, ia64 and x86 architectures
efi/arm: Show SMBIOS bank/device location in CPER and GHES error logs
efifb: Omit memory map check on legacy boot
efi/libstub: Refactor the cmd_stubcopy Makefile command
|
||
|
Linus Torvalds
|
2c6a392cdd |
Merge branch 'core-stacktrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull stack trace updates from Ingo Molnar:
"So Thomas looked at the stacktrace code recently and noticed a few
weirdnesses, and we all know how such stories of crummy kernel code
meeting German engineering perfection end: a 45-patch series to clean
it all up! :-)
Here's the changes in Thomas's words:
'Struct stack_trace is a sinkhole for input and output parameters
which is largely pointless for most usage sites. In fact if embedded
into other data structures it creates indirections and extra storage
overhead for no benefit.
Looking at all usage sites makes it clear that they just require an
interface which is based on a storage array. That array is either on
stack, global or embedded into some other data structure.
Some of the stack depot usage sites are outright wrong, but
fortunately the wrongness just causes more stack being used for
nothing and does not have functional impact.
Another oddity is the inconsistent termination of the stack trace
with ULONG_MAX. It's pointless as the number of entries is what
determines the length of the stored trace. In fact quite some call
sites remove the ULONG_MAX marker afterwards with or without nasty
comments about it. Not all architectures do that and those which do,
do it inconsistenly either conditional on nr_entries == 0 or
unconditionally.
The following series cleans that up by:
1) Removing the ULONG_MAX termination in the architecture code
2) Removing the ULONG_MAX fixups at the call sites
3) Providing plain storage array based interfaces for stacktrace
and stackdepot.
4) Cleaning up the mess at the callsites including some related
cleanups.
5) Removing the struct stack_trace based interfaces
This is not changing the struct stack_trace interfaces at the
architecture level, but it removes the exposure to the generic
code'"
* 'core-stacktrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (45 commits)
x86/stacktrace: Use common infrastructure
stacktrace: Provide common infrastructure
lib/stackdepot: Remove obsolete functions
stacktrace: Remove obsolete functions
livepatch: Simplify stack trace retrieval
tracing: Remove the last struct stack_trace usage
tracing: Simplify stack trace retrieval
tracing: Make ftrace_trace_userstack() static and conditional
tracing: Use percpu stack trace buffer more intelligently
tracing: Simplify stacktrace retrieval in histograms
lockdep: Simplify stack trace handling
lockdep: Remove save argument from check_prev_add()
lockdep: Remove unused trace argument from print_circular_bug()
drm: Simplify stacktrace handling
dm persistent data: Simplify stack trace handling
dm bufio: Simplify stack trace retrieval
btrfs: ref-verify: Simplify stack trace retrieval
dma/debug: Simplify stracktrace retrieval
fault-inject: Simplify stacktrace retrieval
mm/page_owner: Simplify stack trace handling
...
|
||
|
Linus Torvalds
|
0a499fc5c3 |
Merge branch 'core-speculation-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull speculation mitigation update from Ingo Molnar: "This adds the "mitigations=" bootline option, which offers a cross-arch set of options that will work on x86, PowerPC and s390 that will map to the arch specific option internally" * 'core-speculation-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: s390/speculation: Support 'mitigations=' cmdline option powerpc/speculation: Support 'mitigations=' cmdline option x86/speculation: Support 'mitigations=' cmdline option cpu/speculation: Add 'mitigations=' cmdline option |
||
|
Linus Torvalds
|
e50c5d2e72 |
Merge branch 'core-rseq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull rseq updates from Ingo Molnar: "A cleanup and a fix to comments" * 'core-rseq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: rseq: Remove superfluous rseq_len from task_struct rseq: Clean up comments by reflecting removal of event counter |
||
|
Linus Torvalds
|
6ec62961e6 |
Merge branch 'core-objtool-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool updates from Ingo Molnar:
"This is a series from Peter Zijlstra that adds x86 build-time uaccess
validation of SMAP to objtool, which will detect and warn about the
following uaccess API usage bugs and weirdnesses:
- call to %s() with UACCESS enabled
- return with UACCESS enabled
- return with UACCESS disabled from a UACCESS-safe function
- recursive UACCESS enable
- redundant UACCESS disable
- UACCESS-safe disables UACCESS
As it turns out not leaking uaccess permissions outside the intended
uaccess functionality is hard when the interfaces are complex and when
such bugs are mostly dormant.
As a bonus we now also check the DF flag. We had at least one
high-profile bug in that area in the early days of Linux, and the
checking is fairly simple. The checks performed and warnings emitted
are:
- call to %s() with DF set
- return with DF set
- return with modified stack frame
- recursive STD
- redundant CLD
It's all x86-only for now, but later on this can also be used for PAN
on ARM and objtool is fairly cross-platform in principle.
While all warnings emitted by this new checking facility that got
reported to us were fixed, there might be GCC version dependent
warnings that were not reported yet - which we'll address, should they
trigger.
The warnings are non-fatal build warnings"
* 'core-objtool-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (27 commits)
mm/uaccess: Use 'unsigned long' to placate UBSAN warnings on older GCC versions
x86/uaccess: Dont leak the AC flag into __put_user() argument evaluation
sched/x86_64: Don't save flags on context switch
objtool: Add Direction Flag validation
objtool: Add UACCESS validation
objtool: Fix sibling call detection
objtool: Rewrite alt->skip_orig
objtool: Add --backtrace support
objtool: Rewrite add_ignores()
objtool: Handle function aliases
objtool: Set insn->func for alternatives
x86/uaccess, kcov: Disable stack protector
x86/uaccess, ftrace: Fix ftrace_likely_update() vs. SMAP
x86/uaccess, ubsan: Fix UBSAN vs. SMAP
x86/uaccess, kasan: Fix KASAN vs SMAP
x86/smap: Ditch __stringify()
x86/uaccess: Introduce user_access_{save,restore}()
x86/uaccess, signal: Fix AC=1 bloat
x86/uaccess: Always inline user_access_begin()
x86/uaccess, xen: Suppress SMAP warnings
...
|
||
|
Linus Torvalds
|
171c2bcbcb |
Merge branch 'core-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull unified TLB flushing from Ingo Molnar:
"This contains the generic mmu_gather feature from Peter Zijlstra,
which is an all-arch unification of TLB flushing APIs, via the
following (broad) steps:
- enhance the <asm-generic/tlb.h> APIs to cover more arch details
- convert most TLB flushing arch implementations to the generic
<asm-generic/tlb.h> APIs.
- remove leftovers of per arch implementations
After this series every single architecture makes use of the unified
TLB flushing APIs"
* 'core-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
mm/resource: Use resource_overlaps() to simplify region_intersects()
ia64/tlb: Eradicate tlb_migrate_finish() callback
asm-generic/tlb: Remove tlb_table_flush()
asm-generic/tlb: Remove tlb_flush_mmu_free()
asm-generic/tlb: Remove CONFIG_HAVE_GENERIC_MMU_GATHER
asm-generic/tlb: Remove arch_tlb*_mmu()
s390/tlb: Convert to generic mmu_gather
asm-generic/tlb: Introduce CONFIG_HAVE_MMU_GATHER_NO_GATHER=y
arch/tlb: Clean up simple architectures
um/tlb: Convert to generic mmu_gather
sh/tlb: Convert SH to generic mmu_gather
ia64/tlb: Convert to generic mmu_gather
arm/tlb: Convert to generic mmu_gather
asm-generic/tlb, arch: Invert CONFIG_HAVE_RCU_TABLE_INVALIDATE
asm-generic/tlb, ia64: Conditionally provide tlb_migrate_finish()
asm-generic/tlb: Provide generic tlb_flush() based on flush_tlb_mm()
asm-generic/tlb, arch: Provide generic tlb_flush() based on flush_tlb_range()
asm-generic/tlb, arch: Provide generic VIPT cache flush
asm-generic/tlb, arch: Provide CONFIG_HAVE_MMU_GATHER_PAGE_SIZE
asm-generic/tlb: Provide a comment
|
||
Kirill Smelkov
|
c5bf68fe0c |
*: convert stream-like files from nonseekable_open -> stream_open
Using scripts/coccinelle/api/stream_open.cocci added in |
||
|
Rafael J. Wysocki
|
4566e2dd4a |
Merge branch 'pm-x86'
* pm-x86: x86: tsc: Rework time_cpufreq_notifier() admin-guide: pm: intel_epb: Add SPDX license tag and copyright notice PM / arch: x86: MSR_IA32_ENERGY_PERF_BIAS sysfs interface PM / arch: x86: Rework the MSR_IA32_ENERGY_PERF_BIAS handling |
||
|
Rafael J. Wysocki
|
317e2cac45 |
Merge branch 'acpica'
* acpica: ACPICA: Update version to 20190405 ACPICA: Namespace: add check to avoid null pointer dereference ACPICA: Update version to 20190329 ACPICA: utilities: fix spelling of PCC to platform_comm_channel ACPICA: Rename nameseg length macro/define for clarity ACPICA: Rename nameseg compare macro for clarity ACPICA: Rename nameseg copy macro for clarity |
||
Sebastian Andrzej Siewior
|
d9c9ce34ed |
x86/fpu: Fault-in user stack if copy_fpstate_to_sigframe() fails
In the compacted form, XSAVES may save only the XMM+SSE state but skip FP (x87 state). This is denoted by header->xfeatures = 6. The fastpath (copy_fpregs_to_sigframe()) does that but _also_ initialises the FP state (cwd to 0x37f, mxcsr as we do, remaining fields to 0). The slowpath (copy_xstate_to_user()) leaves most of the FP state untouched. Only mxcsr and mxcsr_flags are set due to xfeatures_mxcsr_quirk(). Now that XFEATURE_MASK_FP is set unconditionally, see |
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|
Linus Torvalds
|
7178fb0b23 |
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
"I'd like to apologize for this very late pull request: I was dithering
through the week whether to send the fixes, and then yesterday Jiri's
crash fix for a regression introduced in this cycle clearly marked
perf/urgent as 'must merge now'.
Most of the commits are tooling fixes, plus there's three kernel fixes
via four commits:
- race fix in the Intel PEBS code
- fix an AUX bug and roll back a previous attempt
- fix AMD family 17h generic HW cache-event perf counters
The largest diffstat contribution comes from the AMD fix - a new event
table is introduced, which is a fairly low risk change but has a large
linecount"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel: Fix race in intel_pmu_disable_event()
perf/x86/intel/pt: Remove software double buffering PMU capability
perf/ring_buffer: Fix AUX software double buffering
perf tools: Remove needless asm/unistd.h include fixing build in some places
tools arch uapi: Copy missing unistd.h headers for arc, hexagon and riscv
tools build: Add -ldl to the disassembler-four-args feature test
perf cs-etm: Always allocate memory for cs_etm_queue::prev_packet
perf cs-etm: Don't check cs_etm_queue::prev_packet validity
perf report: Report OOM in status line in the GTK UI
perf bench numa: Add define for RUSAGE_THREAD if not present
tools lib traceevent: Change tag string for error
perf annotate: Fix build on 32 bit for BPF annotation
tools uapi x86: Sync vmx.h with the kernel
perf bpf: Return value with unlocking in perf_env__find_btf()
MAINTAINERS: Include vendor specific files under arch/*/events/*
perf/x86/amd: Update generic hardware cache events for Family 17h
|
||
|
Linus Torvalds
|
13369e8311 |
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fix from Ingo Molnar: "Disable function tracing during early SME setup to fix a boot crash on SME-enabled kernels running distro kernels (some of which have function tracing enabled)" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mm/mem_encrypt: Disable all instrumentation for early SME setup |
||
Nadav Amit
|
caa8413601 |
x86/mm: Initialize PGD cache during mm initialization
Poking-mm initialization might require to duplicate the PGD in early
stage. Initialize the PGD cache earlier to prevent boot failures.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Nadav Amit <namit@vmware.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rick Edgecombe <rick.p.edgecombe@intel.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes:
|
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Jiri Olsa
|
6f55967ad9 |
perf/x86/intel: Fix race in intel_pmu_disable_event()
New race in x86_pmu_stop() was introduced by replacing the atomic __test_and_clear_bit() of cpuc->active_mask by separate test_bit() and __clear_bit() calls in the following commit: |
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|
Linus Torvalds
|
aa1be08f52 |
* PPC and ARM bugfixes from submaintainers
* Fix old Windows versions on AMD (recent regression) * Fix old Linux versions on processors without EPT * Fixes for LAPIC timer optimizations -----BEGIN PGP SIGNATURE----- iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAlzMc18UHHBib256aW5p QHJlZGhhdC5jb20ACgkQv/vSX3jHroNE0ggAj4c9FVC5aFeiBAj1YIcDijT3UtmG AjhoESE61rZI3PkZ5vcj2GC8eS7sKxExpCrQLsB5rLCF+7X90+tW155BHTHGU0ey ZgfGj23vlbZpvwZ4B5ujQ/Lmpry76pmy8EYekQogPP/eJxOB3oMk06tjh1mfSdIn D4Gj8jvYBB2ygAfmW91+YLLZos56id0N+Hyn/s95w4I1o6hKlkdpTOURAJKSGTb1 2t0+XADUt4ZwPM6+2X/eOBMGpeZP0/eR7H3kdyPy3ydm0sFjMiAAs0NbNp3eblB6 oqnytnGUPt8EEoq+wdZahLTbgJst2Ds++XAvVdBZED7zwGaBSETfg03eCg== =YP4M -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm Pull KVM fixes from Paolo Bonzini: - PPC and ARM bugfixes from submaintainers - Fix old Windows versions on AMD (recent regression) - Fix old Linux versions on processors without EPT - Fixes for LAPIC timer optimizations * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (21 commits) KVM: nVMX: Fix size checks in vmx_set_nested_state KVM: selftests: make hyperv_cpuid test pass on AMD KVM: lapic: Check for in-kernel LAPIC before deferencing apic pointer KVM: fix KVM_CLEAR_DIRTY_LOG for memory slots of unaligned size x86/kvm/mmu: reset MMU context when 32-bit guest switches PAE KVM: x86: Whitelist port 0x7e for pre-incrementing %rip Documentation: kvm: fix dirty log ioctl arch lists KVM: VMX: Move RSB stuffing to before the first RET after VM-Exit KVM: arm/arm64: Don't emulate virtual timers on userspace ioctls kvm: arm: Skip stage2 huge mappings for unaligned ipa backed by THP KVM: arm/arm64: Ensure vcpu target is unset on reset failure KVM: lapic: Convert guest TSC to host time domain if necessary KVM: lapic: Allow user to disable adaptive tuning of timer advancement KVM: lapic: Track lapic timer advance per vCPU KVM: lapic: Disable timer advancement if adaptive tuning goes haywire x86: kvm: hyper-v: deal with buggy TLB flush requests from WS2012 KVM: x86: Consider LAPIC TSC-Deadline timer expired if deadline too short KVM: PPC: Book3S: Protect memslots while validating user address KVM: PPC: Book3S HV: Perserve PSSCR FAKE_SUSPEND bit on guest exit KVM: arm/arm64: vgic-v3: Retire pending interrupts on disabling LPIs ... |
||
Alexander Shishkin
|
72e830f684 |
perf/x86/intel/pt: Remove software double buffering PMU capability
Now that all AUX allocations are high-order by default, the software double buffering PMU capability doesn't make sense any more, get rid of it. In case some PMUs choose to opt out, we can re-introduce it. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: adrian.hunter@intel.com Link: http://lkml.kernel.org/r/20190503085536.24119-3-alexander.shishkin@linux.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
|
David S. Miller
|
ff24e4980a |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Three trivial overlapping conflicts. Signed-off-by: David S. Miller <davem@davemloft.net> |
||
Kim Phillips
|
0e3b74e262 |
perf/x86/amd: Update generic hardware cache events for Family 17h
Add a new amd_hw_cache_event_ids_f17h assignment structure set
for AMD families 17h and above, since a lot has changed. Specifically:
L1 Data Cache
The data cache access counter remains the same on Family 17h.
For DC misses, PMCx041's definition changes with Family 17h,
so instead we use the L2 cache accesses from L1 data cache
misses counter (PMCx060,umask=0xc8).
For DC hardware prefetch events, Family 17h breaks compatibility
for PMCx067 "Data Prefetcher", so instead, we use PMCx05a "Hardware
Prefetch DC Fills."
L1 Instruction Cache
PMCs 0x80 and 0x81 (32-byte IC fetches and misses) are backward
compatible on Family 17h.
For prefetches, we remove the erroneous PMCx04B assignment which
counts how many software data cache prefetch load instructions were
dispatched.
LL - Last Level Cache
Removing PMCs 7D, 7E, and 7F assignments, as they do not exist
on Family 17h, where the last level cache is L3. L3 counters
can be accessed using the existing AMD Uncore driver.
Data TLB
On Intel machines, data TLB accesses ("dTLB-loads") are assigned
to counters that count load/store instructions retired. This
is inconsistent with instruction TLB accesses, where Intel
implementations report iTLB misses that hit in the STLB.
Ideally, dTLB-loads would count higher level dTLB misses that hit
in lower level TLBs, and dTLB-load-misses would report those
that also missed in those lower-level TLBs, therefore causing
a page table walk. That would be consistent with instruction
TLB operation, remove the redundancy between dTLB-loads and
L1-dcache-loads, and prevent perf from producing artificially
low percentage ratios, i.e. the "0.01%" below:
42,550,869 L1-dcache-loads
41,591,860 dTLB-loads
4,802 dTLB-load-misses # 0.01% of all dTLB cache hits
7,283,682 L1-dcache-stores
7,912,392 dTLB-stores
310 dTLB-store-misses
On AMD Families prior to 17h, the "Data Cache Accesses" counter is
used, which is slightly better than load/store instructions retired,
but still counts in terms of individual load/store operations
instead of TLB operations.
So, for AMD Families 17h and higher, this patch assigns "dTLB-loads"
to a counter for L1 dTLB misses that hit in the L2 dTLB, and
"dTLB-load-misses" to a counter for L1 DTLB misses that caused
L2 DTLB misses and therefore also caused page table walks. This
results in a much more accurate view of data TLB performance:
60,961,781 L1-dcache-loads
4,601 dTLB-loads
963 dTLB-load-misses # 20.93% of all dTLB cache hits
Note that for all AMD families, data loads and stores are combined
in a single accesses counter, so no 'L1-dcache-stores' are reported
separately, and stores are counted with loads in 'L1-dcache-loads'.
Also note that the "% of all dTLB cache hits" string is misleading
because (a) "dTLB cache": although TLBs can be considered caches for
page tables, in this context, it can be misinterpreted as data cache
hits because the figures are similar (at least on Intel), and (b) not
all those loads (technically accesses) technically "hit" at that
hardware level. "% of all dTLB accesses" would be more clear/accurate.
Instruction TLB
On Intel machines, 'iTLB-loads' measure iTLB misses that hit in the
STLB, and 'iTLB-load-misses' measure iTLB misses that also missed in
the STLB and completed a page table walk.
For AMD Family 17h and above, for 'iTLB-loads' we replace the
erroneous instruction cache fetches counter with PMCx084
"L1 ITLB Miss, L2 ITLB Hit".
For 'iTLB-load-misses' we still use PMCx085 "L1 ITLB Miss,
L2 ITLB Miss", but set a 0xff umask because without it the event
does not get counted.
Branch Predictor (BPU)
PMCs 0xc2 and 0xc3 continue to be valid across all AMD Families.
Node Level Events
Family 17h does not have a PMCx0e9 counter, and corresponding counters
have not been made available publicly, so for now, we mark them as
unsupported for Families 17h and above.
Reference:
"Open-Source Register Reference For AMD Family 17h Processors Models 00h-2Fh"
Released 7/17/2018, Publication #56255, Revision 3.03:
https://www.amd.com/system/files/TechDocs/56255_OSRR.pdf
[ mingo: tidied up the line breaks. ]
Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Cc: <stable@vger.kernel.org> # v4.9+
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Janakarajan Natarajan <Janakarajan.Natarajan@amd.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Martin Liška <mliska@suse.cz>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Pu Wen <puwen@hygon.cn>
Cc: Stephane Eranian <eranian@google.com>
Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Thomas Lendacky <Thomas.Lendacky@amd.com>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: linux-kernel@vger.kernel.org
Cc: linux-perf-users@vger.kernel.org
Fixes:
|
||
Wang YanQing
|
b9aa0b35d8 |
bpf, x32: Fix bug for BPF_ALU64 | BPF_NEG
The current implementation has two errors: 1: The second xor instruction will clear carry flag which is necessary for following sbb instruction. 2: The select coding for sbb instruction is wrong, the coding is "sbb dreg_hi,ecx", but what we need is "sbb ecx,dreg_hi". This patch rewrites the implementation and fixes the errors. This patch fixes below errors reported by bpf/test_verifier in x32 platform when the jit is enabled: " 0: (b4) w1 = 4 1: (b4) w2 = 4 2: (1f) r2 -= r1 3: (4f) r2 |= r1 4: (87) r2 = -r2 5: (c7) r2 s>>= 63 6: (5f) r1 &= r2 7: (bf) r0 = r1 8: (95) exit processed 9 insns (limit 131072), stack depth 0 0: (b4) w1 = 4 1: (b4) w2 = 4 2: (1f) r2 -= r1 3: (4f) r2 |= r1 4: (87) r2 = -r2 5: (c7) r2 s>>= 63 6: (5f) r1 &= r2 7: (bf) r0 = r1 8: (95) exit processed 9 insns (limit 131072), stack depth 0 ...... Summary: 1189 PASSED, 125 SKIPPED, 15 FAILED " Signed-off-by: Wang YanQing <udknight@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> |
||
|
Wang YanQing
|
711aef1bbf |
bpf, x32: Fix bug for BPF_JMP | {BPF_JSGT, BPF_JSLE, BPF_JSLT, BPF_JSGE}
The current method to compare 64-bit numbers for conditional jump is: 1) Compare the high 32-bit first. 2) If the high 32-bit isn't the same, then goto step 4. 3) Compare the low 32-bit. 4) Check the desired condition. This method is right for unsigned comparison, but it is buggy for signed comparison, because it does signed comparison for low 32-bit too. There is only one sign bit in 64-bit number, that is the MSB in the 64-bit number, it is wrong to treat low 32-bit as signed number and do the signed comparison for it. This patch fixes the bug and adds a testcase in selftests/bpf for such bug. Signed-off-by: Wang YanQing <udknight@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> |
||
|
Linus Torvalds
|
459e3a2153 |
gcc-9: properly declare the {pv,hv}clock_page storage
The pvlock_page and hvclock_page variables are (as the name implies)
addresses to pages, created by the linker script.
But we declared them as just "extern u8" variables, which _works_, but
now that gcc does some more bounds checking, it causes warnings like
warning: array subscript 1 is outside array bounds of ‘u8[1]’
when we then access more than one byte from those variables.
Fix this by simply making the declaration of the variables match
reality, which makes the compiler happy too.
Signed-off-by: Linus Torvalds <torvalds@-linux-foundation.org>
|
||
Jim Mattson
|
e8ab8d24b4 |
KVM: nVMX: Fix size checks in vmx_set_nested_state
The size checks in vmx_nested_state are wrong because the calculations
are made based on the size of a pointer to a struct kvm_nested_state
rather than the size of a struct kvm_nested_state.
Reported-by: Felix Wilhelm <fwilhelm@google.com>
Signed-off-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Drew Schmitt <dasch@google.com>
Reviewed-by: Marc Orr <marcorr@google.com>
Reviewed-by: Peter Shier <pshier@google.com>
Reviewed-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
Fixes:
|
||
Paolo Bonzini
|
e9c16c7850 |
KVM: x86: use direct accessors for RIP and RSP
Use specific inline functions for RIP and RSP instead of going through kvm_register_read and kvm_register_write, which are quite a mouthful. kvm_rsp_read and kvm_rsp_write did not exist, so add them. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
Sean Christopherson
|
2b3eaf815c |
KVM: VMX: Use accessors for GPRs outside of dedicated caching logic
... now that there is no overhead when using dedicated accessors. Opportunistically remove a bogus "FIXME" in handle_rdmsr() regarding the upper 32 bits of RAX and RDX. Zeroing the upper 32 bits is architecturally correct as 32-bit writes in 64-bit mode unconditionally clear the upper 32 bits. Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
|
Sean Christopherson
|
de3cd117ed |
KVM: x86: Omit caching logic for always-available GPRs
Except for RSP and RIP, which are held in VMX's VMCS, GPRs are always treated "available and dirtly" on both VMX and SVM, i.e. are unconditionally loaded/saved immediately before/after VM-Enter/VM-Exit. Eliminating the unnecessary caching code reduces the size of KVM by a non-trivial amount, much of which comes from the most common code paths. E.g. on x86_64, kvm_emulate_cpuid() is reduced from 342 to 182 bytes and kvm_emulate_hypercall() from 1362 to 1143, with the total size of KVM dropping by ~1000 bytes. With CONFIG_RETPOLINE=y, the numbers are even more pronounced, e.g.: 353->182, 1418->1172 and well over 2000 bytes. Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
KarimAllah Ahmed
|
0c55671f84 |
kvm, x86: Properly check whether a pfn is an MMIO or not
pfn_valid check is not sufficient because it only checks if a page has a struct page or not, if "mem=" was passed to the kernel some valid pages won't have a struct page. This means that if guests were assigned valid memory that lies after the mem= boundary it will be passed uncached to the guest no matter what the guest caching attributes are for this memory. Introduce a new function e820__mapped_raw_any which is equivalent to e820__mapped_any but uses the original e820 unmodified and use it to identify real *RAM*. Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
|
KarimAllah Ahmed
|
e0bf2665ca |
KVM/nVMX: Use page_address_valid in a few more locations
Use page_address_valid in a few more locations that is already checking for a page aligned address that does not cross the maximum physical address. Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
|
KarimAllah Ahmed
|
dee9c04931 |
KVM/nVMX: Use kvm_vcpu_map for accessing the enlightened VMCS
Use kvm_vcpu_map for accessing the enlightened VMCS since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
|
KarimAllah Ahmed
|
8892530598 |
KVM/nVMX: Use kvm_vcpu_map for accessing the shadow VMCS
Use kvm_vcpu_map for accessing the shadow VMCS since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de> Reviewed-by: Konrad Rzessutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
|
KarimAllah Ahmed
|
8c5fbf1a72 |
KVM/nSVM: Use the new mapping API for mapping guest memory
Use the new mapping API for mapping guest memory to avoid depending on "struct page". Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
|
KarimAllah Ahmed
|
42e35f8072 |
KVM/X86: Use kvm_vcpu_map in emulator_cmpxchg_emulated
Use kvm_vcpu_map in emulator_cmpxchg_emulated since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de> Reviewed-by: Konrad Rzeszutek Wilk <kjonrad.wilk@oracle.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
|
KarimAllah Ahmed
|
3278e04925 |
KVM/nVMX: Use kvm_vcpu_map when mapping the posted interrupt descriptor table
Use kvm_vcpu_map when mapping the posted interrupt descriptor table since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". One additional semantic change is that the virtual host mapping lifecycle has changed a bit. It now has the same lifetime of the pinning of the interrupt descriptor table page on the host side. Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
|
KarimAllah Ahmed
|
96c66e87de |
KVM/nVMX: Use kvm_vcpu_map when mapping the virtual APIC page
Use kvm_vcpu_map when mapping the virtual APIC page since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". One additional semantic change is that the virtual host mapping lifecycle has changed a bit. It now has the same lifetime of the pinning of the virtual APIC page on the host side. Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
|
KarimAllah Ahmed
|
31f0b6c4ba |
KVM/nVMX: Use kvm_vcpu_map when mapping the L1 MSR bitmap
Use kvm_vcpu_map when mapping the L1 MSR bitmap since using kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
|
KarimAllah Ahmed
|
b146b83928 |
X86/nVMX: handle_vmptrld: Use kvm_vcpu_map when copying VMCS12 from guest memory
Use kvm_vcpu_map to the map the VMCS12 from guest memory because kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
Filippo Sironi
|
bd53cb35a3 |
X86/KVM: Handle PFNs outside of kernel reach when touching GPTEs
cmpxchg_gpte() calls get_user_pages_fast() to retrieve the number of pages and the respective struct page to map in the kernel virtual address space. This doesn't work if get_user_pages_fast() is invoked with a userspace virtual address that's backed by PFNs outside of kernel reach (e.g., when limiting the kernel memory with mem= in the command line and using /dev/mem to map memory). If get_user_pages_fast() fails, look up the VMA that back the userspace virtual address, compute the PFN and the physical address, and map it in the kernel virtual address space with memremap(). Signed-off-by: Filippo Sironi <sironi@amazon.de> Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
|
KarimAllah Ahmed
|
3d5f6beb74 |
X86/nVMX: Update the PML table without mapping and unmapping the page
Update the PML table without mapping and unmapping the page. This also avoids using kvm_vcpu_gpa_to_page(..) which assumes that there is a "struct page" for guest memory. As a side-effect of using kvm_write_guest_page the page is also properly marked as dirty. Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
|
KarimAllah Ahmed
|
2e408936b6 |
X86/nVMX: handle_vmon: Read 4 bytes from guest memory
Read the data directly from guest memory instead of the map->read->unmap sequence. This also avoids using kvm_vcpu_gpa_to_page() and kmap() which assumes that there is a "struct page" for guest memory. Suggested-by: Jim Mattson <jmattson@google.com> Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de> Reviewed-by: Jim Mattson <jmattson@google.com> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
Borislav Petkov
|
191c8137a9 |
x86/kvm: Implement HWCR support
The hardware configuration register has some useful bits which can be used by guests. Implement McStatusWrEn which can be used by guests when injecting MCEs with the in-kernel mce-inject module. For that, we need to set bit 18 - McStatusWrEn - first, before writing the MCi_STATUS registers (otherwise we #GP). Add the required machinery to do so. Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Jim Mattson <jmattson@google.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: KVM <kvm@vger.kernel.org> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Cc: Sean Christopherson <sean.j.christopherson@intel.com> Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Yazen Ghannam <Yazen.Ghannam@amd.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |