Re: [Xen-devel] [PATCH] x86/cpu: Use cpu_has_sep for configuring the SYSENTER MSRs

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 26.04.19 at 12:22, <andrew.cooper3@xxxxxxxxxx> wrote:
> Currently, configuration of the SYSENTER MSRs are behind a vendor check for
> Intel and Centaur, but this misses Zhaoxin.
> 
> Use the feature bit, rather than a vendor check.  cpu_has_sep is cleared early
> for AMD processors, which can't use SYSENTER/SYSEXIT when operating in long
> mode.
> 
> Suggested-by: Jan Beulich <JBeulich@xxxxxxxx>
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>



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