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| author | Sean Christopherson <seanjc@google.com> | 2023-06-02 04:19:19 +0300 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2023-06-03 02:37:49 +0300 |
| commit | 8b703a49c9df5e74870381ad7ba9c85d8a74ed2c (patch) | |
| tree | d0e212c887e7888f2b62f988b141659f41ab5784 /arch/x86 | |
| parent | b2ce89978889b848a6dd652695dd1887e416f9d2 (diff) | |
| download | linux-8b703a49c9df5e74870381ad7ba9c85d8a74ed2c.tar.xz | |
KVM: x86: Account fastpath-only VM-Exits in vCPU stats
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>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kvm/x86.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index c0778ca39650..04b57a336b34 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -10758,6 +10758,9 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu) exit_fastpath = EXIT_FASTPATH_EXIT_HANDLED; break; } + + /* Note, VM-Exits that go down the "slow" path are accounted below. */ + ++vcpu->stat.exits; } /* |