[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH 2/2] x86/VMX: don't needlessly install VMFUNC emulation hook
On 22/12/16 08:37, Jan Beulich wrote: Instead of checking cpu_has_vmx_vmfunc inside the hook, use it to determine whether to install the hook in the first place. Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx> I am not so sure about this.vmfunc is reachable in the instruction emulator on hardware which doesn't support vmfunc, and there is explicit provision for using vmfunc 0 via hypercall on hardware lacking vmfunc support. Given that the #VE part of altp2m is always emulated architecturally, I think there is an argument to be made for also emulating EPTP switching architecturally as well. ~Andrew _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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