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xen-devel
RE: [Xen-devel] [Patch] Enable SMEP CPU feature support for XEN itself
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To: |
"Li, Xin" <xin.li@xxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxxxx>, "Yang, Wei Y" <wei.y.yang@xxxxxxxxx> |
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Subject: |
RE: [Xen-devel] [Patch] Enable SMEP CPU feature support for XEN itself |
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From: |
"Li, Xin" <xin.li@xxxxxxxxx> |
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Date: |
Thu, 2 Jun 2011 23:05:04 +0800 |
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[Xen-devel] [Patch] Enable SMEP CPU feature support for XEN itself |
> >} else
> >>setup_clear_cpu_cap(X86_FEATURE_SMEP);
>
> This needs to be done on APs too. Thus I think we still need define
> setup_smep as
> __cpuinit.
This only applies to BP only, and actually all feature check is against BP even
AP has a corresponding bit set. So your suggestion should work.
Thanks!
-Xin
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