Messages in this thread Patch in this message | | | Date | Tue, 21 Feb 2023 16:36:48 +0000 | Subject | [PATCH v3 06/13] KVM: selftests: x86: Add the XFD check to IA32_XFD in #NM handler | From | Mingwei Zhang <> |
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Add an extra check to IA32_XFD to ensure the behavior is consistent with the AMX archtecture. In addition, repeat the checks across context switch to ensure the values of IA32_XFD and IA32_XFD_ERR are well preserved.
Signed-off-by: Mingwei Zhang <mizhang@google.com> --- tools/testing/selftests/kvm/x86_64/amx_test.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/tools/testing/selftests/kvm/x86_64/amx_test.c b/tools/testing/selftests/kvm/x86_64/amx_test.c index ac49b14460b6..296c954dfd6d 100644 --- a/tools/testing/selftests/kvm/x86_64/amx_test.c +++ b/tools/testing/selftests/kvm/x86_64/amx_test.c @@ -218,8 +218,10 @@ void guest_nm_handler(struct ex_regs *regs) GUEST_SYNC(7); GUEST_ASSERT((get_cr0() & X86_CR0_TS) == 0); GUEST_ASSERT(rdmsr(MSR_IA32_XFD_ERR) == XFEATURE_MASK_XTILEDATA); + GUEST_ASSERT(rdmsr(MSR_IA32_XFD) & XFEATURE_MASK_XTILEDATA); GUEST_SYNC(8); GUEST_ASSERT(rdmsr(MSR_IA32_XFD_ERR) == XFEATURE_MASK_XTILEDATA); + GUEST_ASSERT(rdmsr(MSR_IA32_XFD) & XFEATURE_MASK_XTILEDATA); /* Clear xfd_err */ wrmsr(MSR_IA32_XFD_ERR, 0); /* xfd=0, enable amx */ -- 2.39.2.637.g21b0678d19-goog
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