Messages in this thread | | | From | Wanpeng Li <> | Date | Thu, 22 Mar 2018 21:39:49 +0800 | Subject | Re: [PATCH] KVM: X86: Fix the decoding of segment overrides in 64bit mode |
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2018-03-22 20:38 GMT+08:00 Paolo Bonzini <pbonzini@redhat.com>: > On 22/03/2018 12:04, Andrew Cooper wrote: >> We've got a Force Emulation Prefix (ud2a; .ascii "xen") for doing >> magic. Originally, this was used for PV guests to explicitly request an >> emulated CPUID, but I extended it to HVM guests for "emulate the next >> instruction", after we had some guest user => guest kernel privilege >> escalations because of incorrect emulation. > > Wanpeng, why don't you add it behind a new kvm module parameter? :)
Great point! I will have a try. Thanks Paolo and Andrew. :)
Regards, Wanpeng Li
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