diff options
| author | Eric Hankland <ehankland@google.com> | 2021-11-30 15:42:21 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-01-07 10:44:43 -0500 |
| commit | 018d70ffcfec8a01f77b0d840527203d337dd7f9 (patch) | |
| tree | 02ade9fea7be0648987ab9070a66bfe7276d7a89 /arch/x86/kvm/kvm_emulate.h | |
| parent | 9cd803d496e72cd1dd3287c9a6cb4afa636ee16a (diff) | |
KVM: x86: Update vPMCs when retiring branch instructions
When KVM retires a guest branch instruction through emulation,
increment any vPMCs that are configured to monitor "branch
instructions retired," and update the sample period of those counters
so that they will overflow at the right time.
Signed-off-by: Eric Hankland <ehankland@google.com>
[jmattson:
- Split the code to increment "branch instructions retired" into a
separate commit.
- Moved/consolidated the calls to kvm_pmu_trigger_event() in the
emulation of VMLAUNCH/VMRESUME to accommodate the evolution of
that code.
]
Fixes: f5132b01386b ("KVM: Expose a version 2 architectural PMU to a guests")
Signed-off-by: Jim Mattson <jmattson@google.com>
Message-Id: <20211130074221.93635-7-likexu@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/kvm_emulate.h')
| -rw-r--r-- | arch/x86/kvm/kvm_emulate.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/kvm_emulate.h b/arch/x86/kvm/kvm_emulate.h index 68b420289d7e..39eded2426ff 100644 --- a/arch/x86/kvm/kvm_emulate.h +++ b/arch/x86/kvm/kvm_emulate.h @@ -369,6 +369,7 @@ struct x86_emulate_ctxt { struct fetch_cache fetch; struct read_cache io_read; struct read_cache mem_read; + bool is_branch; }; /* Repeat String Operation Prefix */ |