Re: [Xen-devel] [PATCH for-4.8 1/2] x86/vmx: Correct the long mode check in vmx_cpuid_intercept()

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 14.11.16 at 12:01, <andrew.cooper3@xxxxxxxxxx> wrote:
> %cs.L may be set in a legacy mode segment, or clear in a compatibility mode
> segment; it is not the correct way to check for long mode being active.
> 
> Both of these situations result in incorrect visibility of the SYSCALL feature
> in CPUID, and by extension, incorrect behaviour in hvm_efer_valid().
> 
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>


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