Messages in this thread | | | Date | Thu, 21 Nov 2019 23:34:42 +0800 | From | Yang Weijiang <> | Subject | Re: [PATCH v7 2/9] vmx: spp: Add control flags for Sub-Page Protection(SPP) |
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On Thu, Nov 21, 2019 at 11:04:51AM +0100, Paolo Bonzini wrote: > On 19/11/19 09:49, Yang Weijiang wrote: > > @@ -228,6 +228,7 @@ > > #define X86_FEATURE_FLEXPRIORITY ( 8*32+ 2) /* Intel FlexPriority */ > > #define X86_FEATURE_EPT ( 8*32+ 3) /* Intel Extended Page Table */ > > #define X86_FEATURE_VPID ( 8*32+ 4) /* Intel Virtual Processor ID */ > > +#define X86_FEATURE_SPP ( 8*32+ 5) /* Intel EPT-based Sub-Page Write Protection */ > > Please do not include X86_FEATURE_SPP. In general I don't like the VMX > features word, but apart from that SPP is not a feature that affects all > VMs in the same way as EPT or FlexPriority. > So what's a friendly way to let a user check if SPP feature is there?
> Paolo
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