diff options
| author | Reiji Watanabe <reijiw@google.com> | 2023-10-21 00:40:43 +0300 |
|---|---|---|
| committer | Oliver Upton <oliver.upton@linux.dev> | 2023-10-25 01:59:29 +0300 |
| commit | 57fc267f1b5caa56dfb46f60e20e673cbc4cc4a8 (patch) | |
| tree | 777d71453467714f91752cd99f9236177e745407 /arch/arm64/kvm/arm.c | |
| parent | 427733579744ef22ee6d0da9907560d79d937458 (diff) | |
| download | linux-57fc267f1b5caa56dfb46f60e20e673cbc4cc4a8.tar.xz | |
KVM: arm64: PMU: Add a helper to read a vCPU's PMCR_EL0
Add a helper to read a vCPU's PMCR_EL0, and use it whenever KVM
reads a vCPU's PMCR_EL0.
Currently, the PMCR_EL0 value is tracked per vCPU. The following
patches will make (only) PMCR_EL0.N track per guest. Having the
new helper will be useful to combine the PMCR_EL0.N field
(tracked per guest) and the other fields (tracked per vCPU)
to provide the value of PMCR_EL0.
No functional change intended.
Reviewed-by: Sebastian Ott <sebott@redhat.com>
Signed-off-by: Reiji Watanabe <reijiw@google.com>
Signed-off-by: Raghavendra Rao Ananta <rananta@google.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20231020214053.2144305-4-rananta@google.com
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Diffstat (limited to 'arch/arm64/kvm/arm.c')
| -rw-r--r-- | arch/arm64/kvm/arm.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 0771c42d02e4..624e62b2345a 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -801,8 +801,7 @@ static int check_vcpu_requests(struct kvm_vcpu *vcpu) } if (kvm_check_request(KVM_REQ_RELOAD_PMU, vcpu)) - kvm_pmu_handle_pmcr(vcpu, - __vcpu_sys_reg(vcpu, PMCR_EL0)); + kvm_pmu_handle_pmcr(vcpu, kvm_vcpu_read_pmcr(vcpu)); if (kvm_check_request(KVM_REQ_RESYNC_PMU_EL0, vcpu)) kvm_vcpu_pmu_restore_guest(vcpu); |