Re: [Xen-devel] [PATCH] x86emul: MOVNTI does not allow 66/F3/F2 prefixes

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 18/05/17 13:35, Jan Beulich wrote:
> Intel SDM revision 062 finally makes this explicit.
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

So it does.  Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

>
> --- a/xen/arch/x86/x86_emulate/x86_emulate.c
> +++ b/xen/arch/x86/x86_emulate/x86_emulate.c
> @@ -6719,6 +6719,7 @@ x86_emulate(
>          goto simd_0f_imm8_avx;
>  
>      case X86EMUL_OPC(0x0f, 0xc3): /* movnti */
> +        generate_exception_if(vex.pfx, EXC_UD);
>          /* Ignore the non-temporal hint for now. */
>          vcpu_must_have(sse2);
>          dst.val = src.val;
>
>
>


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