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Message-ID: <20251121184409.286650-1-seanjc@google.com>
Date: Fri, 21 Nov 2025 10:44:09 -0800
From: Sean Christopherson <seanjc@...gle.com>
To: Paolo Bonzini <pbonzini@...hat.com>
Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
Sean Christopherson <seanjc@...gle.com>
Subject: [kvm-unit-tests GIT PULL] x86: A pile of changes
Please pull a large pile of (mostly) x86 changes that have accumulated over
the last few months. Note, there are arm and arm64 changes in here, Acked-by
Drew. They were add-ons to an x86 change, but I had to drop the x86 change
because of pre-existing test bugs[1].
I didn't include the AVX VMOVDQA series[2] here, to give you (and others) a
chance to review the changes. Definitely feel free to apply it directly :-)
[1] https://lore.kernel.org/all/3bac29b9-4c49-4e5d-997e-9e4019a2fceb@grsecurity.net
[2] http://lore.kernel.org/all/20251121180901.271486-1-seanjc@google.com
The following changes since commit af582a4ebaf7828c200dc7150aa0dbccb60b08a7:
lib: make limits.h more Clang friendly (2025-09-16 08:09:00 -0500)
are available in the Git repository at:
https://github.com/kvm-x86/kvm-unit-tests.git tags/kvm-x86-2025.11.21
for you to fetch changes up to f561b31d3dee01f8be58978be23bb0903543153d:
x86: pmu_pebs: Support to validate timed PEBS record on GNR/SRF (2025-11-20 16:44:30 -0800)
----------------------------------------------------------------
KVM-Unit-Tests x86 (and one-off arm+arm64) changes:
- Ensure do_iret() has a valid stack frame for x86_64 (it worked by dumb
luck of the top-most page in virtual address space always being mapped).
- Add more selective CR0 write and LMSW testcases for nested SVM.
- Add more LBR virtualization testcases for nested SVM.
- Extend non-canonical memory access tests to verify CR2 isn't clobbered.
- Provide better backtraces for arm and arm64. Support for x86 is also in
the works, but is blocked due to existing test bugs that are exposed by
the forced profiling.
- Add (lots) more CET testcases.
- Workaround PMU test failures on Intel CPUs with overcount errata.
- Misc cleanups and fixes.
----------------------------------------------------------------
Chao Gao (9):
x86/eventinj: Use global asm label for nested NMI IP address verification
x86/eventinj: Push SS and SP to IRET frame
x86: cet: Remove unnecessary memory zeroing for shadow stack
x86: cet: Directly check for #CP exception in run_in_user()
x86: cet: Validate #CP error code
x86: cet: Use report_skip()
x86: cet: Drop unnecessary casting
x86: cet: Validate writing unaligned values to SSP MSR causes #GP
x86: cet: Validate CET states during VMX transitions
Dapeng Mi (3):
x86/pmu: Relax precise count check for emulated instructions tests
x86: pmu_pebs: Remove abundant data_cfg_match calculation
x86: pmu_pebs: Support to validate timed PEBS record on GNR/SRF
Mathias Krause (15):
x86: Print error code for unhandled exceptions
x86/emulator64: Extend non-canonical memory access tests with CR2 coverage
x86: Don't rely on KVM's hypercall patching
x86: Provide a macro for extable handling
x86/hypercall: Simplify and increase coverage
Makefile: Provide a concept of late CFLAGS
arm64: Better backtraces for leaf functions
arm: Fix backtraces involving leaf functions
x86: cet: Make shadow stack less fragile
x86: cet: Simplify IBT test
x86: cet: Use symbolic values for the #CP error codes
x86: cet: Test far returns too
x86: Avoid top-most page for vmalloc on x86-64
x86: cet: Enable NOTRACK handling for IBT tests
x86: cet: Reset IBT tracker state on #CP violations
Sean Christopherson (7):
x86/emulator64: Add macro to test emulation of non-canonical accesses
x86/svm: Account for numerical rounding errors in TSC scaling test
x86: cet: Run SHSTK and IBT tests as appropriate if either feature is supported
x86: cet: Drop the "intel_" prefix from the CET testcase
x86: cet: Add testcases to verify KVM rejects emulation of CET instructions
x86/vmexit: Add WBINVD and INVD VM-Exit latency testcases
x86/emulator: Treat DR6_BUS_LOCK as writable if CPU has BUS_LOCK_DETECT
Yang Weijiang (1):
x86: cet: Pass virtual addresses to invlpg
Yosry Ahmed (13):
scripts: Always return '2' when skipping tests
x86/vmx: Skip vmx_pf_exception_test_fep early if FEP is not available
x86/svm: Cleanup selective cr0 write intercept test
x86/svm: Move CR0 selective write intercept test near CR3 intercept
x86/svm: Add FEP helpers for SVM tests
x86/svm: Report unsupported SVM tests
x86/svm: Move report_svm_guest() to the top of svm_tests.c
x86/svm: Print SVM test names before running tests
x86/svm: Generalize and improve selective CR0 write intercept test
x86/svm: Add more selective CR0 write and LMSW test cases
x86/svm: Correctly extract the IP from LBR MSRs
x86/svm: Cleanup LBRV tests
x86/svm: Add more LBRV test cases
dongsheng (5):
x86/pmu: Add helper to detect Intel overcount issues
x86/pmu: Relax precise count validation for Intel overcounted platforms
x86/pmu: Fix incorrect masking of fixed counters
x86/pmu: Handle instruction overcount issue in overflow test
x86/pmu: Expand "llc references" upper limit for broader compatibility
Makefile | 4 +
arm/Makefile.arm | 8 +
arm/Makefile.arm64 | 6 +
lib/arm/stack.c | 18 ++-
lib/x86/desc.c | 6 +-
lib/x86/desc.h | 17 ++-
lib/x86/msr.h | 9 +-
lib/x86/pmu.c | 39 +++++
lib/x86/pmu.h | 11 ++
lib/x86/processor.h | 27 ++++
lib/x86/usermode.c | 16 +-
lib/x86/usermode.h | 13 +-
lib/x86/vm.c | 2 +
scripts/runtime.bash | 4 +-
x86/apic.c | 5 +-
x86/cet.c | 302 ++++++++++++++++++++++++++++++--------
x86/emulator.c | 9 +-
x86/emulator64.c | 54 ++++---
x86/eventinj.c | 24 ++-
x86/hypercall.c | 131 ++++++++---------
x86/lam.c | 10 +-
x86/pmu.c | 72 ++++++---
x86/pmu_pebs.c | 9 +-
x86/svm.c | 10 +-
x86/svm.h | 1 +
x86/svm_tests.c | 402 +++++++++++++++++++++++++++++++++++----------------
x86/unittests.cfg | 10 +-
x86/vmexit.c | 17 ++-
x86/vmx.h | 8 +-
x86/vmx_tests.c | 86 +++++++++++
30 files changed, 987 insertions(+), 343 deletions(-)
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