[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] x86/vmx: correct the SMEP logic for HVM_CR0_GUEST_RESERVED_BITS
>>> On 23.04.14 at 16:32, <feng.wu@xxxxxxxxx> wrote: > --- a/xen/include/asm-x86/hvm/hvm.h > +++ b/xen/include/asm-x86/hvm/hvm.h > @@ -351,6 +351,15 @@ static inline int hvm_event_pending(struct vcpu *v) > return hvm_funcs.event_pending(v); > } > > +static inline bool_t hvm_vcpu_has_smep(void) > +{ > + unsigned int ebx = 0, leaf = 0x7; Pointless initializer for ebx, and pointless variable leaf. > + hvm_cpuid(leaf, NULL, &ebx, NULL, NULL); And, as I just saw Andrew already pointed out, this needs gating on there being a (visible) leaf 7 in the first place. Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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