Re: [PATCH 2/3] KVM: x86: always expose VIRT_SSBD to guests

[Paolo Bonzini]

On 02/10/19 00:16, Eduardo Habkost wrote:
> Wasn't the old code at arch/x86/kvm/cpuid.c:__do_cpuid_func()
> supposed to be deleted?
> 
>                /*
>                 * The preference is to use SPEC CTRL MSR instead of the
>                 * VIRT_SPEC MSR.
>                 */
>                if (boot_cpu_has(X86_FEATURE_LS_CFG_SSBD) &&
>                    !boot_cpu_has(X86_FEATURE_AMD_SSBD))
>                        entry->ebx |= F(VIRT_SSBD);

Yeah, it's harmless but also useless.

Paolo