Patch 1 is an unofficial patch from Peter to fix x2APIC MSR interception
on non-APICV systems. As Peter suggested, it really should be squashed
with commit 3eb900173c71 ("KVM: x86: VMX: Prevent MSR passthrough when MSR
access is denied"). Without the fix, KVM is completely busted on
non-APICV systems.
Patch 2 is a cleanup of sorts to revert back to the pre-filtering approach
of initializing the x2APIC MSR bitmaps for APICV.
Note, I haven't tested on an APICV system. My APICV system appears to
have crashed over the weekend and I haven't yet journeyed back to the
lab to kick it.
Peter Xu (1):
KVM: VMX: Fix x2APIC MSR intercept handling on !APICV platforms
Sean Christopherson (1):
KVM: VMX: Ignore userspace MSR filters for x2APIC when APICV is
enabled
arch/x86/kvm/vmx/vmx.c | 45 ++++++++++++++++++++++++++++--------------
1 file changed, 30 insertions(+), 15 deletions(-)
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2.28.0
