KVM: x86: update exception bitmap on CPUID changes

bonzini · bonzini · commit 32de2b5ee378 · 2020-07-10T17:01:29.000-04:00
Allow vendor code to observe changes to MAXPHYADDR and start/stop
intercepting page faults.

Reviewed-by: Jim Mattson &lt;jmattson@google.com&gt;
Signed-off-by: Paolo Bonzini &lt;pbonzini@redhat.com&gt;
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
@@ -148,6 +148,7 @@ static void kvm_vcpu_after_set_cpuid(struct kvm_vcpu *vcpu)
 	kvm_pmu_refresh(vcpu);
 	vcpu->arch.cr4_guest_rsvd_bits =
 	    __cr4_reserved_bits(guest_cpuid_has, vcpu);
+	kvm_x86_ops.update_exception_bitmap(vcpu);
 }
 
 static int is_efer_nx(void)

Original file line number	Diff line number	Diff line change
`@@ -148,6 +148,7 @@ static void kvm_vcpu_after_set_cpuid(struct kvm_vcpu *vcpu)`
`148`	`148`	`kvm_pmu_refresh(vcpu);`
`149`	`149`	`vcpu->arch.cr4_guest_rsvd_bits =`
`150`	`150`	`__cr4_reserved_bits(guest_cpuid_has, vcpu);`
	`151`	`+ kvm_x86_ops.update_exception_bitmap(vcpu);`
`151`	`152`	`}`
`152`	`153`
`153`	`154`	`static int is_efer_nx(void)`