Re: [PATCH v1 1/1] x86: Skip WBINVD instruction for VM guest

[Sathyanarayanan Kuppuswamy]

Hi,

On 11/16/21 8:24 AM, Borislav Petkov wrote:
> On Mon, Nov 15, 2021 at 04:50:27PM -0800, Kuppuswamy Sathyanarayanan wrote:
> > -#define ACPI_FLUSH_CPU_CACHE()	wbinvd()
> > +#define ACPI_FLUSH_CPU_CACHE()				\
> > +do {							\
> > +	if (!boot_cpu_has(X86_FEATURE_HYPERVISOR))	\
>
> cpu_feature_enabled()
>
> If you wanna query a X86_FEATURE_* bit, from now on, use only this
> function.

Ok. I will change it in next version.

--
Sathyanarayanan Kuppuswamy
Linux Kernel Developer