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| author | Sean Christopherson <seanjc@google.com> | 2022-11-29 20:53:00 +0300 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2022-12-02 02:31:39 +0300 |
| commit | 8fcee0421386344b58fdc1cd5940219617037968 (patch) | |
| tree | 9f116a56fa602a707c402cd0579e224e1fa0bec2 /tools/testing/selftests/kvm/include/x86_64 | |
| parent | a33004e844e4c60da86ecf8c249aab7179817fce (diff) | |
| download | linux-8fcee0421386344b58fdc1cd5940219617037968.tar.xz | |
KVM: selftests: Restore assert for non-nested VMs in access tracking test
Restore the assert (on x86-64) that <10% of pages are still idle when NOT
running as a nested VM in the access tracking test. The original assert
was converted to a "warning" to avoid false failures when running the
test in a VM, but the non-nested case does not suffer from the same
"infinite TLB size" issue.
Using the HYPERVISOR flag isn't infallible as VMMs aren't strictly
required to enumerate the "feature" in CPUID, but practically speaking
anyone that is running KVM selftests in VMs is going to be using a VMM
and hypervisor that sets the HYPERVISOR flag.
Cc: David Matlack <dmatlack@google.com>
Reviewed-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/r/20221129175300.4052283-3-seanjc@google.com
Diffstat (limited to 'tools/testing/selftests/kvm/include/x86_64')
| -rw-r--r-- | tools/testing/selftests/kvm/include/x86_64/processor.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h index 5d310abe6c3f..22852bd32d7b 100644 --- a/tools/testing/selftests/kvm/include/x86_64/processor.h +++ b/tools/testing/selftests/kvm/include/x86_64/processor.h @@ -94,6 +94,7 @@ struct kvm_x86_cpu_feature { #define X86_FEATURE_XSAVE KVM_X86_CPU_FEATURE(0x1, 0, ECX, 26) #define X86_FEATURE_OSXSAVE KVM_X86_CPU_FEATURE(0x1, 0, ECX, 27) #define X86_FEATURE_RDRAND KVM_X86_CPU_FEATURE(0x1, 0, ECX, 30) +#define X86_FEATURE_HYPERVISOR KVM_X86_CPU_FEATURE(0x1, 0, ECX, 31) #define X86_FEATURE_PAE KVM_X86_CPU_FEATURE(0x1, 0, EDX, 6) #define X86_FEATURE_MCE KVM_X86_CPU_FEATURE(0x1, 0, EDX, 7) #define X86_FEATURE_APIC KVM_X86_CPU_FEATURE(0x1, 0, EDX, 9) |