Avi Kivity wrote:
On 08/11/2009 04:00 AM, Anthony Liguori wrote:
kvm_load_segment_descriptor() can already load plain segments:
if (!(vcpu->arch.cr0 & X86_CR0_PE))
return kvm_load_realmode_segment(vcpu, selector, seg);
so we can simplify the patch a bit by extending the check.
I went down that road but you need to check the to-be-switched-into tss,
which isn't available directly from vcpu so we would have to either pass
the tss as a parameter to the function or at least a flag indicating
that we're going into vm8086 mode.
There are other callers of kvm_load_segment_descriptor that would need
updating and it already takes a few extra parameters. That's why I went
down this road.
Happy to change though if you'd prefer a different approach.
--
Regards,
Anthony Liguori
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