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KVM: x86: Use kvm_cpu_cap_has() for EFER bits enablement checks

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Instead of checking that the hardware supports underlying features for
EFER bits, check if KVM supports them. It is practically the same, but
this removes a subtle dependency on kvm_set_cpu_caps() enabling the
relevant CPUID features.

No functional change intended.

Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Yosry Ahmed <yosry@kernel.org>
Link: https://patch.msgid.link/20260307011619.2324234-3-yosry@kernel.org
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Yosry Ahmed 2026-03-07 01:16:18 +00:00 committed by Sean Christopherson
parent 3b27c82ba2
commit d216449f25
1 changed files with 3 additions and 3 deletions
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6
arch/x86/kvm/x86.c
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@ -10000,13 +10000,13 @@ EXPORT_SYMBOL_FOR_KVM_INTERNAL(kvm_setup_xss_caps);
static void kvm_setup_efer_caps(void)
{
if (boot_cpu_has(X86_FEATURE_NX))
if (kvm_cpu_cap_has(X86_FEATURE_NX))
kvm_enable_efer_bits(EFER_NX);
if (boot_cpu_has(X86_FEATURE_FXSR_OPT))
if (kvm_cpu_cap_has(X86_FEATURE_FXSR_OPT))
kvm_enable_efer_bits(EFER_FFXSR);
if (boot_cpu_has(X86_FEATURE_AUTOIBRS))
if (kvm_cpu_cap_has(X86_FEATURE_AUTOIBRS))
kvm_enable_efer_bits(EFER_AUTOIBRS);
}