Commit 671d9ab3 authored by Borislav Petkov's avatar Borislav Petkov Committed by Paolo Bonzini
Browse files

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: default avatarBorislav Petkov <bp@suse.de>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 8a86aea9

include/linux/kvm_host.h

+2 −1
Original line number Diff line number Diff line
@@ -447,7 +447,8 @@ struct kvm { 


/* 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__)