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KVM: x86: Advertise SRSO_USER_KERNEL_NO to userspace

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SRSO_USER_KERNEL_NO denotes whether the CPU is affected by SRSO across
user/kernel boundaries. Advertise it to guest userspace.

Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Nikolay Borisov <nik.borisov@suse.com>
Link: https://lore.kernel.org/r/20241202120416.6054-3-bp@kernel.org
This commit is contained in:
Borislav Petkov (AMD) 2024-11-13 13:28:33 +01:00
parent 877818802c
commit 716f86b523
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kvm/cpuid.c
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@ -821,7 +821,7 @@ void kvm_set_cpu_caps(void)
kvm_cpu_cap_mask(CPUID_8000_0021_EAX,
F(NO_NESTED_DATA_BP) | F(LFENCE_RDTSC) | 0 /* SmmPgCfgLock */ |
F(NULL_SEL_CLR_BASE) | F(AUTOIBRS) | 0 /* PrefetchCtlMsr */ |
F(WRMSR_XX_BASE_NS)
F(WRMSR_XX_BASE_NS) | F(SRSO_USER_KERNEL_NO)
);
kvm_cpu_cap_check_and_set(X86_FEATURE_SBPB);