Re: [Xen-devel] [PATCH 3/6] x86emul: check for CMPXCHG8B availability

2016-12-13 Thread Andrew Cooper
On 13/12/16 14:03, Jan Beulich wrote: > We can't exclude someone wanting to hide the instruction from guests. > > Signed-off-by: Jan Beulich Reviewed-by: Andrew Cooper ___ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel

[Xen-devel] [PATCH 3/6] x86emul: check for CMPXCHG8B availability

2016-12-13 Thread Jan Beulich
We can't exclude someone wanting to hide the instruction from guests. Signed-off-by: Jan Beulich --- a/xen/arch/x86/x86_emulate/x86_emulate.c +++ b/xen/arch/x86/x86_emulate/x86_emulate.c @@ -1285,6 +1285,7 @@ static bool vcpu_has( } #define vcpu_has_fpu() vcpu_has( 1, EDX, 0