Re: [Xen-devel] [PATCH V6 3/5] x86/hvm: pkeys, add xstate support for pkeys

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 19.01.16 at 08:30, <huaitong.han@xxxxxxxxx> wrote:
> --- a/xen/arch/x86/xstate.c
> +++ b/xen/arch/x86/xstate.c
> @@ -579,6 +579,10 @@ int handle_xsetbv(u32 index, u64 new_bv)
>      if ( (new_bv & ~xfeature_mask) || !valid_xcr0(new_bv) )
>          return -EINVAL;
>  
> +    /* XCR0.PKRU is disabled on PV mode. */
> +    if ( is_pv_vcpu(curr) && (new_bv & XSTATE_PKRU) )
> +        return -EINVAL;

How about making this more distinguishable by using e.g.
-EOPNOTSUPP here?

Jan


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel