[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] RE: [PATCH v2] Enable SMEP CPU feature support for XEN hypervisor
>I mean, I know we may as well just hide the feature from PV 64b guests >totally. That's obvious. Let's stop talking about PV 64b guests already! The >question is: what to do about PV 32b guests? >Quite obviously we ought to allow 32-bit pv guests to control this for >themselves (and hence see the feature). That needs 1) inject SMEP faults back to the 32-bit pv guest. 2) let the guest see SMEP thru CPUID and config it in CR4 (actually it's already set, but just to let guest see it). Anything else? >Besides that, assuming Xin verified it's working, your latest patch >looks great to me. Yeah, verified, the system crashed from a SMEP fault from 64-bit pv kernel. Thanks! -Xin _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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