diff options
| author | Fuad Tabba <tabba@google.com> | 2022-05-10 12:57:10 +0300 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2022-05-15 13:26:41 +0300 |
| commit | 722625c6f4c5b6a9953d6af04c7bb1a6e12830b3 (patch) | |
| tree | 9668a3a118372d2b4514fb81cc0a7fbfd260d4b3 /arch/arm64/kvm/pmu-emul.c | |
| parent | 84d751a019a9792f5b4884e1d598b603c360ec22 (diff) | |
| download | linux-722625c6f4c5b6a9953d6af04c7bb1a6e12830b3.tar.xz | |
KVM: arm64: Reenable pmu in Protected Mode
Now that the pmu code does not access hyp data, reenable it in
protected mode.
Once fully supported, protected VMs will not have pmu support,
since that could leak information. However, non-protected VMs in
protected mode should have pmu support if available.
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/20220510095710.148178-5-tabba@google.com
Diffstat (limited to 'arch/arm64/kvm/pmu-emul.c')
| -rw-r--r-- | arch/arm64/kvm/pmu-emul.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/arm64/kvm/pmu-emul.c b/arch/arm64/kvm/pmu-emul.c index 78fdc443adc7..dc1779d4c7dd 100644 --- a/arch/arm64/kvm/pmu-emul.c +++ b/arch/arm64/kvm/pmu-emul.c @@ -756,8 +756,7 @@ void kvm_host_pmu_init(struct arm_pmu *pmu) { struct arm_pmu_entry *entry; - if (pmu->pmuver == 0 || pmu->pmuver == ID_AA64DFR0_PMUVER_IMP_DEF || - is_protected_kvm_enabled()) + if (pmu->pmuver == 0 || pmu->pmuver == ID_AA64DFR0_PMUVER_IMP_DEF) return; mutex_lock(&arm_pmus_lock); |