diff options
| author | Fuad Tabba <tabba@google.com> | 2022-05-10 09:57:09 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2022-05-15 11:26:41 +0100 |
| commit | 84d751a019a9792f5b4884e1d598b603c360ec22 (patch) | |
| tree | 45c30035eb85762da5cf6b98ab2a4f339e059992 /arch/arm64/include/asm/kvm_host.h | |
| parent | e987a4c60f9755b2f7a19bf1b5ef2eb74c90579b (diff) | |
| download | linux-84d751a019a9792f5b4884e1d598b603c360ec22.tar.bz2 | |
KVM: arm64: Pass pmu events to hyp via vcpu
Instead of the host accessing hyp data directly, pass the pmu
events of the current cpu to hyp via the vcpu.
This adds 64 bits (in two fields) to the vcpu that need to be
synced before every vcpu run in nvhe and protected modes.
However, it isolates the hypervisor from the host, which allows
us to use pmu in protected mode in a subsequent patch.
No visible side effects in behavior intended.
Signed-off-by: Fuad Tabba <tabba@google.com>
Reviewed-by: Oliver Upton <oupton@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220510095710.148178-4-tabba@google.com
Diffstat (limited to 'arch/arm64/include/asm/kvm_host.h')
| -rw-r--r-- | arch/arm64/include/asm/kvm_host.h | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 94a27a7520f4..efca5a63bdaf 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -254,14 +254,8 @@ struct kvm_cpu_context { struct kvm_vcpu *__hyp_running_vcpu; }; -struct kvm_pmu_events { - u32 events_host; - u32 events_guest; -}; - struct kvm_host_data { struct kvm_cpu_context host_ctxt; - struct kvm_pmu_events pmu_events; }; struct kvm_host_psci_config { @@ -796,6 +790,7 @@ void kvm_arch_vcpu_put_debug_state_flags(struct kvm_vcpu *vcpu); void kvm_set_pmu_events(u32 set, struct perf_event_attr *attr); void kvm_clr_pmu_events(u32 clr); +struct kvm_pmu_events *kvm_get_pmu_events(void); void kvm_vcpu_pmu_restore_guest(struct kvm_vcpu *vcpu); void kvm_vcpu_pmu_restore_host(struct kvm_vcpu *vcpu); #else |