kernel/linux.git/tools/testing/selftests/kvm/include/x86_64, branch v6.7

KVM: selftests: Force load all supported XSAVE state in state test

2023-10-12T15:08:59+00:00

Extend x86's state to forcefully load *all* host-supported xfeatures by modifying xstate_bv in the saved state. Stuffing xstate_bv ensures that the selftest is verifying KVM's full ABI regardless of whether or not the guest code is successful in getting various xfeatures out of their INIT state, e.g. see the disaster that is/was MPX. Signed-off-by: Sean Christopherson Message-Id: <20230928001956.924301-6-seanjc@google.com> Signed-off-by: Paolo Bonzini

KVM: selftests: Touch relevant XSAVE state in guest for state test

2023-10-12T15:08:58+00:00

Modify support XSAVE state in the "state test's" guest code so that saving and loading state via KVM_{G,S}ET_XSAVE actually does something useful, i.e. so that xstate_bv in XSAVE state isn't empty. Punt on BNDCSR for now, it's easier to just stuff that xfeature from the host side. Signed-off-by: Sean Christopherson Message-Id: <20230928001956.924301-4-seanjc@google.com> Signed-off-by: Paolo Bonzini

KVM: selftests: Add x86 properties for Intel PMU in processor.h

2023-08-17T19:58:49+00:00

Add x86 properties for Intel PMU so that tests don't have to manually retrieve the correct CPUID leaf+register, and so that the resulting code is self-documenting. Suggested-by: Sean Christopherson Signed-off-by: Jinrong Liang Link: https://lore.kernel.org/r/20230810090945.16053-2-cloudliang@tencent.com Signed-off-by: Sean Christopherson

KVM: selftests: Add #define of expected KVM exit reason for ucall

2023-08-02T21:42:52+00:00

Define the expected architecture specific exit reason for a successful ucall so that common tests can assert that a ucall occurred without the test needing to implement arch specific code. Suggested-by: Andrew Jones Reviewed-by: Andrew Jones Link: https://lore.kernel.org/r/20230731203026.1192091-3-seanjc@google.com Signed-off-by: Sean Christopherson

KVM: selftests: Add arch ucall.h and inline simple arch hooks

2023-08-02T21:42:52+00:00

Add an architecture specific ucall.h and inline the simple arch hooks, e.g. the init hook for everything except ARM, and the actual "do ucall" hook for everything except x86 (which should be simple, but temporarily isn't due to carrying a workaround). Having a per-arch ucall header will allow adding a #define for the expected KVM exit reason for a ucall that is colocated (for everything except x86) with the ucall itself. Reviewed-by: Andrew Jones Link: https://lore.kernel.org/r/20230731203026.1192091-2-seanjc@google.com Signed-off-by: Sean Christopherson

Merge tag 'kvm-x86-selftests-6.4' of https://github.com/kvm-x86/linux into HEAD

2023-04-26T19:56:01+00:00

KVM selftests, and an AMX/XCR0 bugfix, for 6.4: - Don't advertise XTILE_CFG in KVM_GET_SUPPORTED_CPUID if XTILE_DATA is not being reported due to userspace not opting in via prctl() - Overhaul the AMX selftests to improve coverage and cleanup the test - Misc cleanups

KVM: selftests: Add test to verify KVM's supported XCR0

2023-04-11T17:19:04+00:00

Check both architectural rules and KVM's ABI for KVM_GET_SUPPORTED_CPUID to ensure the supported xfeatures[1] don't violate any of them. The architectural rules[2] and KVM's contract with userspace ensure for a given feature, e.g. sse, avx, amx, etc... their associated xfeatures are either all sets or none of them are set, and any dependencies are enabled if needed. [1] EDX:EAX of CPUID.(EAX=0DH,ECX=0) [2] SDM vol 1, 13.3 ENABLING THE XSAVE FEATURE SET AND XSAVE-ENABLED FEATURES Cc: Mingwei Zhang Signed-off-by: Aaron Lewis [sean: expand comments, use a fancy X86_PROPERTY] Reviewed-by: Aaron Lewis Tested-by: Aaron Lewis Link: https://lore.kernel.org/r/20230405004520.421768-7-seanjc@google.com Signed-off-by: Sean Christopherson

KVM: selftests: Add all known XFEATURE masks to common code

2023-04-11T17:19:03+00:00

Add all known XFEATURE masks to processor.h to make them more broadly available in KVM selftests. Relocate and clean up the exiting AMX (XTILE) defines in processor.h, e.g. drop the intermediate define and use BIT_ULL. Signed-off-by: Aaron Lewis Reviewed-by: Aaron Lewis Tested-by: Aaron Lewis Link: https://lore.kernel.org/r/20230405004520.421768-6-seanjc@google.com Signed-off-by: Sean Christopherson

KVM: selftests: Rework dynamic XFeature helper to take mask, not bit

2023-04-11T17:19:03+00:00

Take the XFeature mask in __vm_xsave_require_permission() instead of the bit so that there's no need to define macros for both the bit and the mask. Asserting that only a single bit is set and retrieving said bit is easy enough via log2 helpers. Opportunistically clean up the error message for the ARCH_REQ_XCOMP_GUEST_PERM sanity check. Reviewed-by: Aaron Lewis Tested-by: Aaron Lewis Link: https://lore.kernel.org/r/20230405004520.421768-5-seanjc@google.com Signed-off-by: Sean Christopherson

KVM: selftests: Move XGETBV and XSETBV helpers to common code

2023-04-11T17:19:03+00:00

The instructions XGETBV and XSETBV are useful to other tests. Move them to processor.h to make them more broadly available. No functional change intended. Reviewed-by: Jim Mattson Signed-off-by: Aaron Lewis Reviewed-by: Mingwei Zhang [sean: reword shortlog] Reviewed-by: Aaron Lewis Tested-by: Aaron Lewis Link: https://lore.kernel.org/r/20230405004520.421768-4-seanjc@google.com Signed-off-by: Sean Christopherson