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| author | Marc Zyngier <maz@kernel.org> | 2021-11-26 11:36:43 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2021-12-01 13:11:22 +0000 |
| commit | 00e228b31596c6bf5f08b5ef76f80cb26e620f02 (patch) | |
| tree | 8378343e10643acd94b838a1f7daddc28cc0f598 /arch/arm64/kvm/pmu-emul.c | |
| parent | d58071a8a76d779eedab38033ae4c821c30295a5 (diff) | |
| download | linux-00e228b31596c6bf5f08b5ef76f80cb26e620f02.tar.bz2 | |
KVM: arm64: Add minimal handling for the ARMv8.7 PMU
When running a KVM guest hosted on an ARMv8.7 machine, the host
kernel complains that it doesn't know about the architected number
of events.
Fix it by adding the PMUver code corresponding to PMUv3 for ARMv8.7.
Reviewed-by: Alexandru Elisei <alexandru.elisei@arm.com>
Tested-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211126115533.217903-1-maz@kernel.org
Diffstat (limited to 'arch/arm64/kvm/pmu-emul.c')
| -rw-r--r-- | arch/arm64/kvm/pmu-emul.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/kvm/pmu-emul.c b/arch/arm64/kvm/pmu-emul.c index a5e4bbf5e68f..ca92cc5c71c6 100644 --- a/arch/arm64/kvm/pmu-emul.c +++ b/arch/arm64/kvm/pmu-emul.c @@ -28,6 +28,7 @@ static u32 kvm_pmu_event_mask(struct kvm *kvm) case ID_AA64DFR0_PMUVER_8_1: case ID_AA64DFR0_PMUVER_8_4: case ID_AA64DFR0_PMUVER_8_5: + case ID_AA64DFR0_PMUVER_8_7: return GENMASK(15, 0); default: /* Shouldn't be here, just for sanity */ WARN_ONCE(1, "Unknown PMU version %d\n", kvm->arch.pmuver); |