Re: [Xen-devel] [PATCH] x86/cpufeatures: Expose UMIP to HVM guest

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 20.07.17 at 07:29, <boqun.feng@xxxxxxxxx> wrote:
> User-Mode Instruction Prevention (UMIP) is a security feature present in
> new Intel Processors. With this feature, when the UMIP bit in CR4 set,
> the following instructions cannot be executed if CPL > 0: SGDT, SIDT,
> SLDT, SMSW, and STR. An attempt at such execution causes a general-
> protection exception (#GP).
> 
> This patch simply adds necessary definitions to expose this feature to
> hvm guests.
> 
> Signed-off-by: Boqun Feng (Intel) <boqun.feng@xxxxxxxxx>

Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>



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