kvm: Dump guest rIP when the guest tried something unsupported
It looks like this in action:
kvm [5197]: vcpu0, guest rIP: 0xffffffff810187ba unhandled rdmsr: 0xc001102
and helps to pinpoint quickly where in the guest we did the unsupported
thing.
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 2969c47..61c3e6c6 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -447,7 +447,8 @@
/* The guest did something we don't support. */
#define vcpu_unimpl(vcpu, fmt, ...) \
- kvm_pr_unimpl("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__)
+ kvm_pr_unimpl("vcpu%i, guest rIP: 0x%lx " fmt, \
+ (vcpu)->vcpu_id, kvm_rip_read(vcpu), ## __VA_ARGS__)
#define vcpu_debug(vcpu, fmt, ...) \
kvm_debug("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__)