-----BEGIN PGP SIGNATURE-----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=Oa1c
-----END PGP SIGNATURE-----
Merge tag 'printk-for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux
Pull printk updates from Petr Mladek:
- Add %pt[RT]s modifier to vsprintf(). It overrides ISO 8601 separator
by using ' ' (space). It produces "YYYY-mm-dd HH:MM:SS" instead of
"YYYY-mm-ddTHH:MM:SS".
- Correctly parse long row of numbers by sscanf() when using the field
width. Add extensive sscanf() selftest.
- Generalize re-entrant CPU lock that has already been used to
serialize dump_stack() output. It is part of the ongoing printk
rework. It will allow to remove the obsoleted printk_safe buffers and
introduce atomic consoles.
- Some code clean up and sparse warning fixes.
* tag 'printk-for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
printk: fix cpu lock ordering
lib/dump_stack: move cpu lock to printk.c
printk: Remove trailing semicolon in macros
random32: Fix implicit truncation warning in prandom_seed_state()
lib: test_scanf: Remove pointless use of type_min() with unsigned types
selftests: lib: Add wrapper script for test_scanf
lib: test_scanf: Add tests for sscanf number conversion
lib: vsprintf: Fix handling of number field widths in vsscanf
lib: vsprintf: scanf: Negative number must have field width > 1
usb: host: xhci-tegra: Switch to use %ptTs
nilfs2: Switch to use %ptTs
kdb: Switch to use %ptTs
lib/vsprintf: Allow to override ISO 8601 date and time separator
Pull user namespace rlimit handling update from Eric Biederman:
"This is the work mainly by Alexey Gladkov to limit rlimits to the
rlimits of the user that created a user namespace, and to allow users
to have stricter limits on the resources created within a user
namespace."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
cred: add missing return error code when set_cred_ucounts() failed
ucounts: Silence warning in dec_rlimit_ucounts
ucounts: Set ucount_max to the largest positive value the type can hold
kselftests: Add test to check for rlimit changes in different user namespaces
Reimplement RLIMIT_MEMLOCK on top of ucounts
Reimplement RLIMIT_SIGPENDING on top of ucounts
Reimplement RLIMIT_MSGQUEUE on top of ucounts
Reimplement RLIMIT_NPROC on top of ucounts
Use atomic_t for ucounts reference counting
Add a reference to ucounts for each cred
Increase size of ucounts to atomic_long_t
- Add MTE support in guests, complete with tag save/restore interface
- Reduce the impact of CMOs by moving them in the page-table code
- Allow device block mappings at stage-2
- Reduce the footprint of the vmemmap in protected mode
- Support the vGIC on dumb systems such as the Apple M1
- Add selftest infrastructure to support multiple configuration
and apply that to PMU/non-PMU setups
- Add selftests for the debug architecture
- The usual crop of PMU fixes
PPC:
- Support for the H_RPT_INVALIDATE hypercall
- Conversion of Book3S entry/exit to C
- Bug fixes
S390:
- new HW facilities for guests
- make inline assembly more robust with KASAN and co
x86:
- Allow userspace to handle emulation errors (unknown instructions)
- Lazy allocation of the rmap (host physical -> guest physical address)
- Support for virtualizing TSC scaling on VMX machines
- Optimizations to avoid shattering huge pages at the beginning of live migration
- Support for initializing the PDPTRs without loading them from memory
- Many TLB flushing cleanups
- Refuse to load if two-stage paging is available but NX is not (this has
been a requirement in practice for over a year)
- A large series that separates the MMU mode (WP/SMAP/SMEP etc.) from
CR0/CR4/EFER, using the MMU mode everywhere once it is computed
from the CPU registers
- Use PM notifier to notify the guest about host suspend or hibernate
- Support for passing arguments to Hyper-V hypercalls using XMM registers
- Support for Hyper-V TLB flush hypercalls and enlightened MSR bitmap on
AMD processors
- Hide Hyper-V hypercalls that are not included in the guest CPUID
- Fixes for live migration of virtual machines that use the Hyper-V
"enlightened VMCS" optimization of nested virtualization
- Bugfixes (not many)
Generic:
- Support for retrieving statistics without debugfs
- Cleanups for the KVM selftests API
-----BEGIN PGP SIGNATURE-----
iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmDV9UYUHHBib256aW5p
QHJlZGhhdC5jb20ACgkQv/vSX3jHroOIRgf/XX8fKLh24RnTOs2ldIu2AfRGVrT4
QMrr8MxhmtukBAszk2xKvBt8/6gkUjdaIC3xqEnVjxaDaUvZaEtP7CQlF5JV45rn
iv1zyxUKucXrnIOr+gCioIT7qBlh207zV35ArKioP9Y83cWx9uAs22pfr6g+7RxO
h8bJZlJbSG6IGr3voANCIb9UyjU1V/l8iEHqRwhmr/A5rARPfD7g8lfMEQeGkzX6
+/UydX2fumB3tl8e2iMQj6vLVdSOsCkehvpHK+Z33EpkKhan7GwZ2sZ05WmXV/nY
QLAYfD10KegoNWl5Ay4GTp4hEAIYVrRJCLC+wnLdc0U8udbfCuTC31LK4w==
=NcRh
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm updates from Paolo Bonzini:
"This covers all architectures (except MIPS) so I don't expect any
other feature pull requests this merge window.
ARM:
- Add MTE support in guests, complete with tag save/restore interface
- Reduce the impact of CMOs by moving them in the page-table code
- Allow device block mappings at stage-2
- Reduce the footprint of the vmemmap in protected mode
- Support the vGIC on dumb systems such as the Apple M1
- Add selftest infrastructure to support multiple configuration and
apply that to PMU/non-PMU setups
- Add selftests for the debug architecture
- The usual crop of PMU fixes
PPC:
- Support for the H_RPT_INVALIDATE hypercall
- Conversion of Book3S entry/exit to C
- Bug fixes
S390:
- new HW facilities for guests
- make inline assembly more robust with KASAN and co
x86:
- Allow userspace to handle emulation errors (unknown instructions)
- Lazy allocation of the rmap (host physical -> guest physical
address)
- Support for virtualizing TSC scaling on VMX machines
- Optimizations to avoid shattering huge pages at the beginning of
live migration
- Support for initializing the PDPTRs without loading them from
memory
- Many TLB flushing cleanups
- Refuse to load if two-stage paging is available but NX is not (this
has been a requirement in practice for over a year)
- A large series that separates the MMU mode (WP/SMAP/SMEP etc.) from
CR0/CR4/EFER, using the MMU mode everywhere once it is computed
from the CPU registers
- Use PM notifier to notify the guest about host suspend or hibernate
- Support for passing arguments to Hyper-V hypercalls using XMM
registers
- Support for Hyper-V TLB flush hypercalls and enlightened MSR bitmap
on AMD processors
- Hide Hyper-V hypercalls that are not included in the guest CPUID
- Fixes for live migration of virtual machines that use the Hyper-V
"enlightened VMCS" optimization of nested virtualization
- Bugfixes (not many)
Generic:
- Support for retrieving statistics without debugfs
- Cleanups for the KVM selftests API"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (314 commits)
KVM: x86: rename apic_access_page_done to apic_access_memslot_enabled
kvm: x86: disable the narrow guest module parameter on unload
selftests: kvm: Allows userspace to handle emulation errors.
kvm: x86: Allow userspace to handle emulation errors
KVM: x86/mmu: Let guest use GBPAGES if supported in hardware and TDP is on
KVM: x86/mmu: Get CR4.SMEP from MMU, not vCPU, in shadow page fault
KVM: x86/mmu: Get CR0.WP from MMU, not vCPU, in shadow page fault
KVM: x86/mmu: Drop redundant rsvd bits reset for nested NPT
KVM: x86/mmu: Optimize and clean up so called "last nonleaf level" logic
KVM: x86: Enhance comments for MMU roles and nested transition trickiness
KVM: x86/mmu: WARN on any reserved SPTE value when making a valid SPTE
KVM: x86/mmu: Add helpers to do full reserved SPTE checks w/ generic MMU
KVM: x86/mmu: Use MMU's role to determine PTTYPE
KVM: x86/mmu: Collapse 32-bit PAE and 64-bit statements for helpers
KVM: x86/mmu: Add a helper to calculate root from role_regs
KVM: x86/mmu: Add helper to update paging metadata
KVM: x86/mmu: Don't update nested guest's paging bitmasks if CR0.PG=0
KVM: x86/mmu: Consolidate reset_rsvds_bits_mask() calls
KVM: x86/mmu: Use MMU role_regs to get LA57, and drop vCPU LA57 helper
KVM: x86/mmu: Get nested MMU's root level from the MMU's role
...
- Optimise SVE switching for CPUs with 128-bit implementations.
- Fix output format from SVE selftest.
- Add support for versions v1.2 and 1.3 of the SMC calling convention.
- Allow Pointer Authentication to be configured independently for
kernel and userspace.
- PMU driver cleanups for managing IRQ affinity and exposing event
attributes via sysfs.
- KASAN optimisations for both hardware tagging (MTE) and out-of-line
software tagging implementations.
- Relax frame record alignment requirements to facilitate 8-byte
alignment with KASAN and Clang.
- Cleanup of page-table definitions and removal of unused memory types.
- Reduction of ARCH_DMA_MINALIGN back to 64 bytes.
- Refactoring of our instruction decoding routines and addition of some
missing encodings.
- Move entry code moved into C and hardened against harmful compiler
instrumentation.
- Update booting requirements for the FEAT_HCX feature, added to v8.7
of the architecture.
- Fix resume from idle when pNMI is being used.
- Additional CPU sanity checks for MTE and preparatory changes for
systems where not all of the CPUs support 32-bit EL0.
- Update our kernel string routines to the latest Cortex Strings
implementation.
- Big cleanup of our cache maintenance routines, which were confusingly
named and inconsistent in their implementations.
- Tweak linker flags so that GDB can understand vmlinux when using RELR
relocations.
- Boot path cleanups to enable early initialisation of per-cpu
operations needed by KCSAN.
- Non-critical fixes and miscellaneous cleanup.
-----BEGIN PGP SIGNATURE-----
iQFEBAABCgAuFiEEPxTL6PPUbjXGY88ct6xw3ITBYzQFAmDUh1YQHHdpbGxAa2Vy
bmVsLm9yZwAKCRC3rHDchMFjNDaUCAC+2Jy2Yopd94uBPYajGybM0rqCUgE7b5n1
A7UzmQ6fia2hwqCPmxGG+sRabovwN7C1bKrUCc03RIbErIa7wum1edeyqmF/Aw44
DUDY1MAOSZaFmX8L62QCvxG1hfdLPtGmHMd1hdXvxYK7PCaigEFnzbLRWTtgE+Ok
JhdvNfsoeITJObHnvYPF3rV3NAbyYni9aNJ5AC/qb3dlf6XigEraXaMj29XHKfwc
+vmn+25oqFkLHyFeguqIoK+vUQAy/8TjFfjX83eN3LZknNhDJgWS1Iq1Nm+Vxt62
RvDUUecWJjAooCWgmil6pt0enI+q6E8LcX3A3cWWrM6psbxnYzkU
=I6KS
-----END PGP SIGNATURE-----
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon:
"There's a reasonable amount here and the juicy details are all below.
It's worth noting that the MTE/KASAN changes strayed outside of our
usual directories due to core mm changes and some associated changes
to some other architectures; Andrew asked for us to carry these [1]
rather that take them via the -mm tree.
Summary:
- Optimise SVE switching for CPUs with 128-bit implementations.
- Fix output format from SVE selftest.
- Add support for versions v1.2 and 1.3 of the SMC calling
convention.
- Allow Pointer Authentication to be configured independently for
kernel and userspace.
- PMU driver cleanups for managing IRQ affinity and exposing event
attributes via sysfs.
- KASAN optimisations for both hardware tagging (MTE) and out-of-line
software tagging implementations.
- Relax frame record alignment requirements to facilitate 8-byte
alignment with KASAN and Clang.
- Cleanup of page-table definitions and removal of unused memory
types.
- Reduction of ARCH_DMA_MINALIGN back to 64 bytes.
- Refactoring of our instruction decoding routines and addition of
some missing encodings.
- Move entry code moved into C and hardened against harmful compiler
instrumentation.
- Update booting requirements for the FEAT_HCX feature, added to v8.7
of the architecture.
- Fix resume from idle when pNMI is being used.
- Additional CPU sanity checks for MTE and preparatory changes for
systems where not all of the CPUs support 32-bit EL0.
- Update our kernel string routines to the latest Cortex Strings
implementation.
- Big cleanup of our cache maintenance routines, which were
confusingly named and inconsistent in their implementations.
- Tweak linker flags so that GDB can understand vmlinux when using
RELR relocations.
- Boot path cleanups to enable early initialisation of per-cpu
operations needed by KCSAN.
- Non-critical fixes and miscellaneous cleanup"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (150 commits)
arm64: tlb: fix the TTL value of tlb_get_level
arm64: Restrict undef hook for cpufeature registers
arm64/mm: Rename ARM64_SWAPPER_USES_SECTION_MAPS
arm64: insn: avoid circular include dependency
arm64: smp: Bump debugging information print down to KERN_DEBUG
drivers/perf: fix the missed ida_simple_remove() in ddr_perf_probe()
perf/arm-cmn: Fix invalid pointer when access dtc object sharing the same IRQ number
arm64: suspend: Use cpuidle context helpers in cpu_suspend()
PSCI: Use cpuidle context helpers in psci_cpu_suspend_enter()
arm64: Convert cpu_do_idle() to using cpuidle context helpers
arm64: Add cpuidle context save/restore helpers
arm64: head: fix code comments in set_cpu_boot_mode_flag
arm64: mm: drop unused __pa(__idmap_text_start)
arm64: mm: fix the count comments in compute_indices
arm64/mm: Fix ttbr0 values stored in struct thread_info for software-pan
arm64: mm: Pass original fault address to handle_mm_fault()
arm64/mm: Drop SECTION_[SHIFT|SIZE|MASK]
arm64/mm: Use CONT_PMD_SHIFT for ARM64_MEMSTART_SHIFT
arm64/mm: Drop SWAPPER_INIT_MAP_SIZE
arm64: Conditionally configure PTR_AUTH key of the kernel.
...
Instead of depending on "sysctl" being installed, just use "grep -H" for
sysctl status reporting. Additionally report kernel version for easier
comparisons.
Signed-off-by: Kees Cook <keescook@chromium.org>
When running the seccomp benchmark under a test runner, it wouldn't
provide any feedback on progress. Set stdout unbuffered.
Suggested-by: Will Drewry <wad@chromium.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Since the open fds might not always start at "4" (especially when
running under kselftest, etc), start counting from the first assigned
fd, rather than using the more permissive EXPECT_GE(fd, 0).
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/lkml/20210527032948.3730953-1-keescook@chromium.org
Reviewed-by: Rodrigo Campos <rodrigo@kinvolk.io>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
This just adds a test to verify that when using the new introduced flag
to ADDFD, a valid fd is added and returned as the syscall result.
Signed-off-by: Rodrigo Campos <rodrigo@kinvolk.io>
Signed-off-by: Sargun Dhillon <sargun@sargun.me>
Acked-by: Tycho Andersen <tycho@tycho.pizza>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210517193908.3113-5-sargun@sargun.me
- Changes to core scheduling facilities:
- Add "Core Scheduling" via CONFIG_SCHED_CORE=y, which enables
coordinated scheduling across SMT siblings. This is a much
requested feature for cloud computing platforms, to allow
the flexible utilization of SMT siblings, without exposing
untrusted domains to information leaks & side channels, plus
to ensure more deterministic computing performance on SMT
systems used by heterogenous workloads.
There's new prctls to set core scheduling groups, which
allows more flexible management of workloads that can share
siblings.
- Fix task->state access anti-patterns that may result in missed
wakeups and rename it to ->__state in the process to catch new
abuses.
- Load-balancing changes:
- Tweak newidle_balance for fair-sched, to improve
'memcache'-like workloads.
- "Age" (decay) average idle time, to better track & improve workloads
such as 'tbench'.
- Fix & improve energy-aware (EAS) balancing logic & metrics.
- Fix & improve the uclamp metrics.
- Fix task migration (taskset) corner case on !CONFIG_CPUSET.
- Fix RT and deadline utilization tracking across policy changes
- Introduce a "burstable" CFS controller via cgroups, which allows
bursty CPU-bound workloads to borrow a bit against their future
quota to improve overall latencies & batching. Can be tweaked
via /sys/fs/cgroup/cpu/<X>/cpu.cfs_burst_us.
- Rework assymetric topology/capacity detection & handling.
- Scheduler statistics & tooling:
- Disable delayacct by default, but add a sysctl to enable
it at runtime if tooling needs it. Use static keys and
other optimizations to make it more palatable.
- Use sched_clock() in delayacct, instead of ktime_get_ns().
- Misc cleanups and fixes.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-----BEGIN PGP SIGNATURE-----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=3VDr
-----END PGP SIGNATURE-----
Merge tag 'sched-core-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler udpates from Ingo Molnar:
- Changes to core scheduling facilities:
- Add "Core Scheduling" via CONFIG_SCHED_CORE=y, which enables
coordinated scheduling across SMT siblings. This is a much
requested feature for cloud computing platforms, to allow the
flexible utilization of SMT siblings, without exposing untrusted
domains to information leaks & side channels, plus to ensure more
deterministic computing performance on SMT systems used by
heterogenous workloads.
There are new prctls to set core scheduling groups, which allows
more flexible management of workloads that can share siblings.
- Fix task->state access anti-patterns that may result in missed
wakeups and rename it to ->__state in the process to catch new
abuses.
- Load-balancing changes:
- Tweak newidle_balance for fair-sched, to improve 'memcache'-like
workloads.
- "Age" (decay) average idle time, to better track & improve
workloads such as 'tbench'.
- Fix & improve energy-aware (EAS) balancing logic & metrics.
- Fix & improve the uclamp metrics.
- Fix task migration (taskset) corner case on !CONFIG_CPUSET.
- Fix RT and deadline utilization tracking across policy changes
- Introduce a "burstable" CFS controller via cgroups, which allows
bursty CPU-bound workloads to borrow a bit against their future
quota to improve overall latencies & batching. Can be tweaked via
/sys/fs/cgroup/cpu/<X>/cpu.cfs_burst_us.
- Rework assymetric topology/capacity detection & handling.
- Scheduler statistics & tooling:
- Disable delayacct by default, but add a sysctl to enable it at
runtime if tooling needs it. Use static keys and other
optimizations to make it more palatable.
- Use sched_clock() in delayacct, instead of ktime_get_ns().
- Misc cleanups and fixes.
* tag 'sched-core-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (72 commits)
sched/doc: Update the CPU capacity asymmetry bits
sched/topology: Rework CPU capacity asymmetry detection
sched/core: Introduce SD_ASYM_CPUCAPACITY_FULL sched_domain flag
psi: Fix race between psi_trigger_create/destroy
sched/fair: Introduce the burstable CFS controller
sched/uclamp: Fix uclamp_tg_restrict()
sched/rt: Fix Deadline utilization tracking during policy change
sched/rt: Fix RT utilization tracking during policy change
sched: Change task_struct::state
sched,arch: Remove unused TASK_STATE offsets
sched,timer: Use __set_current_state()
sched: Add get_current_state()
sched,perf,kvm: Fix preemption condition
sched: Introduce task_is_running()
sched: Unbreak wakeups
sched/fair: Age the average idle time
sched/cpufreq: Consider reduced CPU capacity in energy calculation
sched/fair: Take thermal pressure into account while estimating energy
thermal/cpufreq_cooling: Update offline CPUs per-cpu thermal_pressure
sched/fair: Return early from update_tg_cfs_load() if delta == 0
...
- Core locking & atomics:
- Convert all architectures to ARCH_ATOMIC: move every
architecture to ARCH_ATOMIC, then get rid of ARCH_ATOMIC
and all the transitory facilities and #ifdefs.
Much reduction in complexity from that series:
63 files changed, 756 insertions(+), 4094 deletions(-)
- Self-test enhancements
- Futexes:
- Add the new FUTEX_LOCK_PI2 ABI, which is a variant that
doesn't set FLAGS_CLOCKRT (.e. uses CLOCK_MONOTONIC).
[ The temptation to repurpose FUTEX_LOCK_PI's implicit
setting of FLAGS_CLOCKRT & invert the flag's meaning
to avoid having to introduce a new variant was
resisted successfully. ]
- Enhance futex self-tests
- Lockdep:
- Fix dependency path printouts
- Optimize trace saving
- Broaden & fix wait-context checks
- Misc cleanups and fixes.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-----BEGIN PGP SIGNATURE-----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=tH//
-----END PGP SIGNATURE-----
Merge tag 'locking-core-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
- Core locking & atomics:
- Convert all architectures to ARCH_ATOMIC: move every architecture
to ARCH_ATOMIC, then get rid of ARCH_ATOMIC and all the
transitory facilities and #ifdefs.
Much reduction in complexity from that series:
63 files changed, 756 insertions(+), 4094 deletions(-)
- Self-test enhancements
- Futexes:
- Add the new FUTEX_LOCK_PI2 ABI, which is a variant that doesn't
set FLAGS_CLOCKRT (.e. uses CLOCK_MONOTONIC).
[ The temptation to repurpose FUTEX_LOCK_PI's implicit setting of
FLAGS_CLOCKRT & invert the flag's meaning to avoid having to
introduce a new variant was resisted successfully. ]
- Enhance futex self-tests
- Lockdep:
- Fix dependency path printouts
- Optimize trace saving
- Broaden & fix wait-context checks
- Misc cleanups and fixes.
* tag 'locking-core-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (52 commits)
locking/lockdep: Correct the description error for check_redundant()
futex: Provide FUTEX_LOCK_PI2 to support clock selection
futex: Prepare futex_lock_pi() for runtime clock selection
lockdep/selftest: Remove wait-type RCU_CALLBACK tests
lockdep/selftests: Fix selftests vs PROVE_RAW_LOCK_NESTING
lockdep: Fix wait-type for empty stack
locking/selftests: Add a selftest for check_irq_usage()
lockding/lockdep: Avoid to find wrong lock dep path in check_irq_usage()
locking/lockdep: Remove the unnecessary trace saving
locking/lockdep: Fix the dep path printing for backwards BFS
selftests: futex: Add futex compare requeue test
selftests: futex: Add futex wait test
seqlock: Remove trailing semicolon in macros
locking/lockdep: Reduce LOCKDEP dependency list
locking/lockdep,doc: Improve readability of the block matrix
locking/atomics: atomic-instrumented: simplify ifdeffery
locking/atomic: delete !ARCH_ATOMIC remnants
locking/atomic: xtensa: move to ARCH_ATOMIC
locking/atomic: sparc: move to ARCH_ATOMIC
locking/atomic: sh: move to ARCH_ATOMIC
...
- Add MTE support in guests, complete with tag save/restore interface
- Reduce the impact of CMOs by moving them in the page-table code
- Allow device block mappings at stage-2
- Reduce the footprint of the vmemmap in protected mode
- Support the vGIC on dumb systems such as the Apple M1
- Add selftest infrastructure to support multiple configuration
and apply that to PMU/non-PMU setups
- Add selftests for the debug architecture
- The usual crop of PMU fixes
-----BEGIN PGP SIGNATURE-----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=fWBV
-----END PGP SIGNATURE-----
Merge tag 'kvmarm-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 updates for v5.14.
- Add MTE support in guests, complete with tag save/restore interface
- Reduce the impact of CMOs by moving them in the page-table code
- Allow device block mappings at stage-2
- Reduce the footprint of the vmemmap in protected mode
- Support the vGIC on dumb systems such as the Apple M1
- Add selftest infrastructure to support multiple configuration
and apply that to PMU/non-PMU setups
- Add selftests for the debug architecture
- The usual crop of PMU fixes
This test exercises the feature KVM_CAP_EXIT_ON_EMULATION_FAILURE. When
enabled, errors in the in-kernel instruction emulator are forwarded to
userspace with the instruction bytes stored in the exit struct for
KVM_EXIT_INTERNAL_ERROR. So, when the guest attempts to emulate an
'flds' instruction, which isn't able to be emulated in KVM, instead
of failing, KVM sends the instruction to userspace to handle.
For this test to work properly the module parameter
'allow_smaller_maxphyaddr' has to be set.
Signed-off-by: Aaron Lewis <aaronlewis@google.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Message-Id: <20210510144834.658457-3-aaronlewis@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add an x86-only test to verify that x86's MMU reacts to CPUID updates
that impact the MMU. KVM has had multiple bugs where it fails to
reconfigure the MMU after the guest's vCPU model changes.
Sadly, this test is effectively limited to shadow paging because the
hardware page walk handler doesn't support software disabling of GBPAGES
support, and KVM doesn't manually walk the GVA->GPA on faults for
performance reasons (doing so would large defeat the benefits of TDP).
Don't require !TDP for the tests as there is still value in running the
tests with TDP, even though the tests will fail (barring KVM hacks).
E.g. KVM should not completely explode if MAXPHYADDR results in KVM using
4-level vs. 5-level paging for the guest.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210622200529.3650424-20-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add x86-64 hugepage support in the form of a x86-only variant of
virt_pg_map() that takes an explicit page size. To keep things simple,
follow the existing logic for 4k pages and disallow creating a hugepage
if the upper-level entry is present, even if the desired pfn matches.
Opportunistically fix a double "beyond beyond" reported by checkpatch.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210622200529.3650424-19-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
In preparation for adding hugepage support, replace "pageMapL4Entry",
"pageDirectoryPointerEntry", and "pageDirectoryEntry" with a common
"pageUpperEntry", and add a helper to create an upper level entry. All
upper level entries have the same layout, using unique structs provides
minimal value and requires a non-trivial amount of code duplication.
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210622200529.3650424-18-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add a helper to retrieve a PTE pointer given a PFN, address, and level
in preparation for adding hugepage support.
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210622200529.3650424-17-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Rename the "address" field to "pfn" in x86's page table structs to match
reality.
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210622200529.3650424-16-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add a helper to allocate a page for use in constructing the guest's page
tables. All architectures have identical address and memslot
requirements (which appear to be arbitrary anyways).
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210622200529.3650424-15-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Drop the EPTP memslot param from all EPT helpers and shove the hardcoded
'0' down to the vm_phy_page_alloc() calls.
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210622200529.3650424-14-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Drop the memslot param from virt_pg_map() and virt_map() and shove the
hardcoded '0' down to the vm_phy_page_alloc() calls.
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210622200529.3650424-13-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Drop the memslot param(s) from vm_vaddr_alloc() now that all callers
directly specific '0' as the memslot. Drop the memslot param from
virt_pgd_alloc() as well since vm_vaddr_alloc() is its only user.
I.e. shove the hardcoded '0' down to the vm_phy_pages_alloc() calls.
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Use KVM_UTIL_MIN_ADDR as the minimum for x86-64's CPUID array. The
system page size was likely used as the minimum because _something_ had
to be provided. Increasing the min from 0x1000 to 0x2000 should have no
meaningful impact on the test, and will allow changing vm_vaddr_alloc()
to use KVM_UTIL_MIN_VADDR as the default.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210622200529.3650424-11-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Use the common page allocation helper for the xAPIC IPI test, effectively
raising the minimum virtual address from 0x1000 to 0x2000. Presumably
the test won't explode if it can't get a page at address 0x1000...
Cc: Peter Shier <pshier@google.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210622200529.3650424-10-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Switch to the vm_vaddr_alloc_page() helper for x86-64's "kernel"
allocations now that the helper uses the same min virtual address as the
open coded versions.
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210622200529.3650424-9-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reduce the minimum virtual address of page allocations from 0x10000 to
KVM_UTIL_MIN_VADDR (0x2000). Both values appear to be completely
arbitrary, and reducing the min to KVM_UTIL_MIN_VADDR will allow for
additional consolidation of code.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210622200529.3650424-8-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add wrappers to allocate 1 and N pages of memory using de facto standard
values as the defaults for minimum virtual address, data memslot, and
page table memslot. Convert all compatible users.
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210622200529.3650424-7-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Use the de facto standard minimum virtual address for Hyper-V's hcall
params page. It's the allocator's job to not double-allocate memory,
i.e. there's no reason to force different regions for the params vs.
hcall page. This will allow adding a page allocation helper with a
"standard" minimum address.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210622200529.3650424-6-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Refactor x86's GDT/TSS allocations to for memslot '0' at its
vm_addr_alloc() call sites instead of passing in '0' from on high. This
is a step toward using a common helper for allocating pages.
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210622200529.3650424-5-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Use memslot '0' for all vm_vaddr_alloc() calls when loading the test
binary. This is the first step toward adding a helper to handle page
allocations with a default value for the target memslot.
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210622200529.3650424-4-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Fix an apparent copy-paste goof in hyperv_features where hcall_page
(which is two pages, so technically just the first page) gets zeroed
twice, and hcall_params gets zeroed none times.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210622200529.3650424-3-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Drop an unnecessary include of asm/barrier.h from dirty_log_test.c to
allow the test to build on arm64. arm64, s390, and x86 all build cleanly
without the include (PPC and MIPS aren't supported in KVM's selftests).
arm64's barrier.h includes linux/kasan-checks.h, which is not copied
into tools/.
In file included from ../../../../tools/include/asm/barrier.h:8,
from dirty_log_test.c:19:
.../arm64/include/asm/barrier.h:12:10: fatal error: linux/kasan-checks.h: No such file or directory
12 | #include <linux/kasan-checks.h>
| ^~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Fixes: 84292e5659 ("KVM: selftests: Add dirty ring buffer test")
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210622200529.3650424-2-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Commit 22f232d134 ("KVM: selftests: x86: Set supported CPUIDs on
default VM") moved vcpu_set_cpuid into vm_create_with_vcpus, but
dirty_log_test doesn't use it to create vm. So vcpu's CPUIDs is
not set, the guest's pa_bits in kvm would be smaller than the
value queried by userspace.
However, the dirty track memory slot is in the highest GPA, the
reserved bits in gpte would be set with wrong pa_bits.
For shadow paging, page fault would fail in permission_fault and
be injected into guest. Since guest doesn't have idt, it finally
leads to vm_exit for triple fault.
Move vcpu_set_cpuid into vm_vcpu_add_default to set supported
CPUIDs on default vcpu, since almost all tests need it.
Fixes: 22f232d134 ("KVM: selftests: x86: Set supported CPUIDs on default VM")
Signed-off-by: Hou Wenlong <houwenlong93@linux.alibaba.com>
Message-Id: <411ea2173f89abce56fc1fca5af913ed9c5a89c9.1624351343.git.houwenlong93@linux.alibaba.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
max_mem_slots is now declared as uint32_t. The result of (0x200000 * 32767)
is unexpectedly truncated to be 0xffe00000, whilst we actually need to
allocate about, 63GB. Cast max_mem_slots to size_t in both mmap() and
munmap() to fix the length truncation.
We'll otherwise see the failure on arm64 thanks to the access_ok() checking
in __kvm_set_memory_region(), as the unmapped VA happen to go beyond the
task's allowed address space.
# ./set_memory_region_test
Allowed number of memory slots: 32767
Adding slots 0..32766, each memory region with 2048K size
==== Test Assertion Failure ====
set_memory_region_test.c:391: ret == 0
pid=94861 tid=94861 errno=22 - Invalid argument
1 0x00000000004015a7: test_add_max_memory_regions at set_memory_region_test.c:389
2 (inlined by) main at set_memory_region_test.c:426
3 0x0000ffffb8e67bdf: ?? ??:0
4 0x00000000004016db: _start at :?
KVM_SET_USER_MEMORY_REGION IOCTL failed,
rc: -1 errno: 22 slot: 2615
Fixes: 3bf0fcd754 ("KVM: selftests: Speed up set_memory_region_test")
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Message-Id: <20210624070931.565-1-yuzenghui@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add testing for futex_cmp_requeue(). The first test just requeues from one
waiter to another one, and wakes it. The second performs both wake and
requeue, and checks the return values to see if the operation woke/requeued
the expected number of waiters.
Signed-off-by: André Almeida <andrealmeid@collabora.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Davidlohr Bueso <dbueso@suse.de>
Link: https://lore.kernel.org/r/20210531165036.41468-3-andrealmeid@collabora.com
There are three different strategies to uniquely identify a futex in the
kernel:
- Private futexes: uses the pointer to mm_struct and the page address
- Shared futexes: checks if the page containing the address is a PageAnon:
- If it is, uses the same data as a private futexes
- If it isn't, uses an inode sequence number from struct inode and
the page's index
Create a selftest to check those three paths and basic wait/wake
mechanism.
Signed-off-by: André Almeida <andrealmeid@collabora.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Davidlohr Bueso <dbueso@suse.de>
Link: https://lore.kernel.org/r/20210531165036.41468-2-andrealmeid@collabora.com
Selftest updates from Andrew Jones, fixing the sysgreg list
expectations by dealing with multiple configurations, such
as with or without a PMU.
* kvm-arm64/selftest/sysreg-list-fix:
KVM: arm64: Update MAINTAINERS to include selftests
KVM: arm64: selftests: get-reg-list: Split base and pmu registers
KVM: arm64: selftests: get-reg-list: Remove get-reg-list-sve
KVM: arm64: selftests: get-reg-list: Provide config selection option
KVM: arm64: selftests: get-reg-list: Prepare to run multiple configs at once
KVM: arm64: selftests: get-reg-list: Introduce vcpu configs
Since KVM commit 11663111cd ("KVM: arm64: Hide PMU registers from
userspace when not available") the get-reg-list* tests have been
failing with
...
... There are 74 missing registers.
The following lines are missing registers:
...
where the 74 missing registers are all PMU registers. This isn't a
bug in KVM that the selftest found, even though it's true that a
KVM userspace that wasn't setting the KVM_ARM_VCPU_PMU_V3 VCPU
flag, but still expecting the PMU registers to be in the reg-list,
would suddenly no longer have their expectations met. In that case,
the expectations were wrong, though, so that KVM userspace needs to
be fixed, and so does this selftest. The fix for this selftest is to
pull the PMU registers out of the base register sublist into their
own sublist and then create new, pmu-enabled vcpu configs which can
be tested.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Ricardo Koller <ricarkol@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210531103344.29325-6-drjones@redhat.com
Now that we can easily run the test for multiple vcpu configs, let's
merge get-reg-list and get-reg-list-sve into just get-reg-list. We
also add a final change to make it more possible to run multiple
tests, which is to fork the test, rather than directly run it. That
allows a test to fail, but subsequent tests can still run.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Ricardo Koller <ricarkol@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210531103344.29325-5-drjones@redhat.com
Add a new command line option that allows the user to select a specific
configuration, e.g. --config=sve will give the sve config. Also provide
help text and the --help/-h options.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Ricardo Koller <ricarkol@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210531103344.29325-4-drjones@redhat.com
We don't want to have to create a new binary for each vcpu config, so
prepare to run the test for multiple vcpu configs in a single binary.
We do this by factoring out the test from main() and then looping over
configs. When given '--list' we still never print more than a single
reg-list for a single vcpu config though, because it would be confusing
otherwise.
No functional change intended.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Ricardo Koller <ricarkol@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210531103344.29325-3-drjones@redhat.com
We already break register lists into sublists that get selected based
on vcpu config. However, since we only had two configs (vregs and sve),
we didn't structure the code very well to manage them. Restructure it
now to more cleanly handle register sublists that are dependent on the
vcpu config.
This patch has no intended functional change (except for the vcpu
config name now being prepended to all output).
Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Ricardo Koller <ricarkol@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210531103344.29325-2-drjones@redhat.com
bluetooth, netfilter and can.
Current release - regressions:
- mlxsw: spectrum_qdisc: Pass handle, not band number to find_class()
to fix modifying offloaded qdiscs
- lantiq: net: fix duplicated skb in rx descriptor ring
- rtnetlink: fix regression in bridge VLAN configuration, empty info
is not an error, bot-generated "fix" was not needed
- libbpf: s/rx/tx/ typo on umem->rx_ring_setup_done to fix
umem creation
Current release - new code bugs:
- ethtool: fix NULL pointer dereference during module EEPROM dump via
the new netlink API
- mlx5e: don't update netdev RQs with PTP-RQ, the special purpose queue
should not be visible to the stack
- mlx5e: select special PTP queue only for SKBTX_HW_TSTAMP skbs
- mlx5e: verify dev is present in get devlink port ndo, avoid a panic
Previous releases - regressions:
- neighbour: allow NUD_NOARP entries to be force GCed
- further fixes for fallout from reorg of WiFi locking
(staging: rtl8723bs, mac80211, cfg80211)
- skbuff: fix incorrect msg_zerocopy copy notifications
- mac80211: fix NULL ptr deref for injected rate info
- Revert "net/mlx5: Arm only EQs with EQEs" it may cause missed IRQs
Previous releases - always broken:
- bpf: more speculative execution fixes
- netfilter: nft_fib_ipv6: skip ipv6 packets from any to link-local
- udp: fix race between close() and udp_abort() resulting in a panic
- fix out of bounds when parsing TCP options before packets
are validated (in netfilter: synproxy, tc: sch_cake and mptcp)
- mptcp: improve operation under memory pressure, add missing wake-ups
- mptcp: fix double-lock/soft lookup in subflow_error_report()
- bridge: fix races (null pointer deref and UAF) in vlan tunnel egress
- ena: fix DMA mapping function issues in XDP
- rds: fix memory leak in rds_recvmsg
Misc:
- vrf: allow larger MTUs
- icmp: don't send out ICMP messages with a source address of 0.0.0.0
- cdc_ncm: switch to eth%d interface naming
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-----BEGIN PGP SIGNATURE-----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=xxUe
-----END PGP SIGNATURE-----
Merge tag 'net-5.13-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Networking fixes for 5.13-rc7, including fixes from wireless, bpf,
bluetooth, netfilter and can.
Current release - regressions:
- mlxsw: spectrum_qdisc: Pass handle, not band number to find_class()
to fix modifying offloaded qdiscs
- lantiq: net: fix duplicated skb in rx descriptor ring
- rtnetlink: fix regression in bridge VLAN configuration, empty info
is not an error, bot-generated "fix" was not needed
- libbpf: s/rx/tx/ typo on umem->rx_ring_setup_done to fix umem
creation
Current release - new code bugs:
- ethtool: fix NULL pointer dereference during module EEPROM dump via
the new netlink API
- mlx5e: don't update netdev RQs with PTP-RQ, the special purpose
queue should not be visible to the stack
- mlx5e: select special PTP queue only for SKBTX_HW_TSTAMP skbs
- mlx5e: verify dev is present in get devlink port ndo, avoid a panic
Previous releases - regressions:
- neighbour: allow NUD_NOARP entries to be force GCed
- further fixes for fallout from reorg of WiFi locking (staging:
rtl8723bs, mac80211, cfg80211)
- skbuff: fix incorrect msg_zerocopy copy notifications
- mac80211: fix NULL ptr deref for injected rate info
- Revert "net/mlx5: Arm only EQs with EQEs" it may cause missed IRQs
Previous releases - always broken:
- bpf: more speculative execution fixes
- netfilter: nft_fib_ipv6: skip ipv6 packets from any to link-local
- udp: fix race between close() and udp_abort() resulting in a panic
- fix out of bounds when parsing TCP options before packets are
validated (in netfilter: synproxy, tc: sch_cake and mptcp)
- mptcp: improve operation under memory pressure, add missing
wake-ups
- mptcp: fix double-lock/soft lookup in subflow_error_report()
- bridge: fix races (null pointer deref and UAF) in vlan tunnel
egress
- ena: fix DMA mapping function issues in XDP
- rds: fix memory leak in rds_recvmsg
Misc:
- vrf: allow larger MTUs
- icmp: don't send out ICMP messages with a source address of 0.0.0.0
- cdc_ncm: switch to eth%d interface naming"
* tag 'net-5.13-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (139 commits)
net: ethernet: fix potential use-after-free in ec_bhf_remove
selftests/net: Add icmp.sh for testing ICMP dummy address responses
icmp: don't send out ICMP messages with a source address of 0.0.0.0
net: ll_temac: Avoid ndo_start_xmit returning NETDEV_TX_BUSY
net: ll_temac: Fix TX BD buffer overwrite
net: ll_temac: Add memory-barriers for TX BD access
net: ll_temac: Make sure to free skb when it is completely used
MAINTAINERS: add Guvenc as SMC maintainer
bnxt_en: Call bnxt_ethtool_free() in bnxt_init_one() error path
bnxt_en: Fix TQM fastpath ring backing store computation
bnxt_en: Rediscover PHY capabilities after firmware reset
cxgb4: fix wrong shift.
mac80211: handle various extensible elements correctly
mac80211: reset profile_periodicity/ema_ap
cfg80211: avoid double free of PMSR request
cfg80211: make certificate generation more robust
mac80211: minstrel_ht: fix sample time check
net: qed: Fix memcpy() overflow of qed_dcbx_params()
net: cdc_eem: fix tx fixup skb leak
net: hamradio: fix memory leak in mkiss_close
...
This adds a new icmp.sh selftest for testing that the kernel will respond
correctly with an ICMP unreachable message with the dummy (192.0.0.8)
source address when there are no IPv4 addresses configured to use as source
addresses.
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit in sched/urgent moved the cfs_rq_is_decayed() function:
a7b359fc6a: ("sched/fair: Correctly insert cfs_rq's to list on unthrottle")
and this fresh commit in sched/core modified it in the old location:
9e077b52d8: ("sched/pelt: Check that *_avg are null when *_sum are")
Merge the two variants.
Conflicts:
kernel/sched/fair.c
Signed-off-by: Ingo Molnar <mingo@kernel.org>
reported by syzkaller ("KVM: x86: Immediately reset the MMU context when the SMM
flag is cleared").
-----BEGIN PGP SIGNATURE-----
iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmDLldwUHHBib256aW5p
QHJlZGhhdC5jb20ACgkQv/vSX3jHroPTOgf/XpAehLdWlx2877ulcBD0Kjt0tLvH
OFHRD1Ir0d1Ay3DX8qmxLquXHB4CoDGZBwi1d7AI165kUP/XLmV0bY6TZ74inI/P
CaD8Bsbm8+iBl5jrovEPc+223bK+3OFOvo2pk6M/MlsO/ExRikaPDtHOnkfousbl
nLX8v2qd7ihWyJOdLJMU9pV8E2iczQoCuH9yWBHdCrxRxWtPzkEekPWb0sujByiF
4tD7sqiEA3ugbF1Wm5keQV63NLplfxx+Zun0FV+tbpjjxQWAGl81dP+zmqok0sM/
qQCyZevt6jLLkL+Fn6hI6PP9OTeYreX2fgwhWXs71d2js33yNg5Veqx5Bw==
=Gs/y
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"Miscellaneous bugfixes.
The main interesting one is a NULL pointer dereference reported by
syzkaller ("KVM: x86: Immediately reset the MMU context when the SMM
flag is cleared")"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: selftests: Fix kvm_check_cap() assertion
KVM: x86/mmu: Calculate and check "full" mmu_role for nested MMU
KVM: X86: Fix x86_emulator slab cache leak
KVM: SVM: Call SEV Guest Decommission if ASID binding fails
KVM: x86: Immediately reset the MMU context when the SMM flag is cleared
KVM: x86: Fix fall-through warnings for Clang
KVM: SVM: fix doc warnings
KVM: selftests: Fix compiling errors when initializing the static structure
kvm: LAPIC: Restore guard to prevent illegal APIC register access
Do KVM_GET_NESTED_STATE/KVM_SET_NESTED_STATE for a freshly restored VM
(before the first KVM_RUN) to check that KVM_STATE_NESTED_EVMCS is not
lost.
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210526132026.270394-12-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The initial implementation of the test only tests that access to Hyper-V
MSRs and hypercalls is in compliance with guest visible CPUID feature bits.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210521095204.2161214-31-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
