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| author | Paolo Bonzini <pbonzini@redhat.com> | 2013-03-28 17:18:35 +0100 |
|---|---|---|
| committer | Gleb Natapov <gleb@redhat.com> | 2013-04-02 17:42:44 +0300 |
| commit | afd80d85aefac27e6e2f9dc10f60515357c504d2 (patch) | |
| tree | f9c59ac17a12e113d9eff004e3bdae40ea995f35 /arch/x86/include/asm/kvm_host.h | |
| parent | e1e2e605c2ad6791ce6346b22443ce611709fa65 (diff) | |
| download | blackbird-obmc-linux-afd80d85aefac27e6e2f9dc10f60515357c504d2.tar.gz blackbird-obmc-linux-afd80d85aefac27e6e2f9dc10f60515357c504d2.zip | |
pmu: prepare for migration support
In order to migrate the PMU state correctly, we need to restore the
values of MSR_CORE_PERF_GLOBAL_STATUS (a read-only register) and
MSR_CORE_PERF_GLOBAL_OVF_CTRL (which has side effects when written).
We also need to write the full 40-bit value of the performance counter,
which would only be possible with a v3 architectural PMU's full-width
counter MSRs.
To distinguish host-initiated writes from the guest's, pass the
full struct msr_data to kvm_pmu_set_msr.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Diffstat (limited to 'arch/x86/include/asm/kvm_host.h')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index b5a64621d5af..3dd84c996d56 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1030,7 +1030,7 @@ void kvm_pmu_reset(struct kvm_vcpu *vcpu); void kvm_pmu_cpuid_update(struct kvm_vcpu *vcpu); bool kvm_pmu_msr(struct kvm_vcpu *vcpu, u32 msr); int kvm_pmu_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *data); -int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, u32 msr, u64 data); +int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info); int kvm_pmu_read_pmc(struct kvm_vcpu *vcpu, unsigned pmc, u64 *data); void kvm_handle_pmu_event(struct kvm_vcpu *vcpu); void kvm_deliver_pmi(struct kvm_vcpu *vcpu); |
