On Wed, 04 Oct 2023 20:12:37 -0700, Jim Mattson wrote:
> Define an X86_FEATURE_* flag for CPUID.80000021H:EAX.[bit 1], and
> advertise the feature to userspace via KVM_GET_SUPPORTED_CPUID.
>
> Per AMD's "Processor Programming Reference (PPR) for AMD Family 19h
> Model 61h, Revision B1 Processors (56713-B1-PUB)," this CPUID bit
> indicates that a WRMSR to MSR_FS_BASE, MSR_GS_BASE, or
> MSR_KERNEL_GS_BASE is non-serializing. This is a change in previously
> architected behavior.
>
> [...]
Applied to kvm-x86 misc, thanks!
[1/1] x86: KVM: Add feature flag for CPUID.80000021H:EAX[bit 1]
https://github.com/kvm-x86/linux/commit/329369caeccb
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https://github.com/kvm-x86/linux/tree/next
