From: Sean Christopherson seanjc@google.com
commit 8b703a49c9df5e74870381ad7ba9c85d8a74ed2c upstream.
Increment vcpu->stat.exits when handling a fastpath VM-Exit without going through any part of the "slow" path. Not bumping the exits stat can result in wildly misleading exit counts, e.g. if the primary reason the guest is exiting is to program the TSC deadline timer.
Fixes: 404d5d7bff0d ("KVM: X86: Introduce more exit_fastpath_completion enum values") Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20230602011920.787844-2-seanjc@google.com Signed-off-by: Sean Christopherson seanjc@google.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/x86/kvm/x86.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -10682,6 +10682,9 @@ static int vcpu_enter_guest(struct kvm_v exit_fastpath = EXIT_FASTPATH_EXIT_HANDLED; break; } + + /* Note, VM-Exits that go down the "slow" path are accounted below. */ + ++vcpu->stat.exits; }
/*