Re: [PATCH v7 32/36] xen/x86: Remove SME feature in PV guests

[Juergen Gross]

On 16/06/17 20:55, Tom Lendacky wrote:
> Xen does not currently support SME for PV guests. Clear the SME cpu
> capability in order to avoid any ambiguity.
> 
> Signed-off-by: Tom Lendacky <thomas.lendacky@xxxxxxx>

Reviewed-by: Juergen Gross <jgross@xxxxxxxx>


Juergen

> ---
>  arch/x86/xen/enlighten_pv.c |    1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c
> index f33eef4..e6ecf42 100644
> --- a/arch/x86/xen/enlighten_pv.c
> +++ b/arch/x86/xen/enlighten_pv.c
> @@ -294,6 +294,7 @@ static void __init xen_init_capabilities(void)
>  	setup_clear_cpu_cap(X86_FEATURE_MTRR);
>  	setup_clear_cpu_cap(X86_FEATURE_ACC);
>  	setup_clear_cpu_cap(X86_FEATURE_X2APIC);
> +	setup_clear_cpu_cap(X86_FEATURE_SME);
>  
>  	if (!xen_initial_domain())
>  		setup_clear_cpu_cap(X86_FEATURE_ACPI);
> 
>