Currently to support Intel->AMD migration, if CPU vendor is GenuineIntel,
we emulate the full 64 value for MSR_IA32_SYSENTER_{EIP|ESP}
msrs, and we also emulate the sysenter/sysexit instruction in long mode.
(Emulator does still refuse to emulate sysenter in 64 bit mode, on the
ground that the
On Tue, 2021-03-16 at 09:16 +0100, Paolo Bonzini wrote:
> On 15/03/21 19:19, Maxim Levitsky wrote:
> > On Mon, 2021-03-15 at 18:56 +0100, Paolo Bonzini wrote:
> > > On 15/03/21 18:43, Maxim Levitsky wrote:
> > > > + if (!guest_cpuid_is_intel(vcpu)) {
> > > > + /*
> > > > +
On 15/03/21 19:19, Maxim Levitsky wrote:
On Mon, 2021-03-15 at 18:56 +0100, Paolo Bonzini wrote:
On 15/03/21 18:43, Maxim Levitsky wrote:
+ if (!guest_cpuid_is_intel(vcpu)) {
+ /*
+* If hardware supports Virtual VMLOAD VMSAVE then enable it
+
On Mon, 2021-03-15 at 18:56 +0100, Paolo Bonzini wrote:
> On 15/03/21 18:43, Maxim Levitsky wrote:
> > + if (!guest_cpuid_is_intel(vcpu)) {
> > + /*
> > +* If hardware supports Virtual VMLOAD VMSAVE then enable it
> > +* in VMCB and clear intercepts to avoid
On 15/03/21 18:43, Maxim Levitsky wrote:
+ if (!guest_cpuid_is_intel(vcpu)) {
+ /*
+* If hardware supports Virtual VMLOAD VMSAVE then enable it
+* in VMCB and clear intercepts to avoid #VMEXIT.
+*/
+ if (vls) {
+
Currently to support Intel->AMD migration, if CPU vendor is GenuineIntel,
we emulate full 64 value for MSR_IA32_SYSENTER_EIP/MSR_IA32_SYSENTER_ESP msrs,
and we also emulate sysenter/sysexit instruction in long mode.
(Emulator does still refuse to emulate sysenter in 64 bit mode, on the ground
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