KVM: emulator: Fix io permission checking for 64bit guest
Current implementation truncates upper 32bit of TR base address during IO
permission bitmap check. The patch fixes this.
Reported-and-tested-by: Francis Moreau <francis.moro@gmail.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/arch/x86/include/asm/kvm_emulate.h b/arch/x86/include/asm/kvm_emulate.h
index 50ebc32..0f52135 100644
--- a/arch/x86/include/asm/kvm_emulate.h
+++ b/arch/x86/include/asm/kvm_emulate.h
@@ -142,9 +142,9 @@
int (*pio_out_emulated)(int size, unsigned short port, const void *val,
unsigned int count, struct kvm_vcpu *vcpu);
- bool (*get_cached_descriptor)(struct desc_struct *desc,
+ bool (*get_cached_descriptor)(struct desc_struct *desc, u32 *base3,
int seg, struct kvm_vcpu *vcpu);
- void (*set_cached_descriptor)(struct desc_struct *desc,
+ void (*set_cached_descriptor)(struct desc_struct *desc, u32 base3,
int seg, struct kvm_vcpu *vcpu);
u16 (*get_segment_selector)(int seg, struct kvm_vcpu *vcpu);
void (*set_segment_selector)(u16 sel, int seg, struct kvm_vcpu *vcpu);