Our PMU code is only implementing the ARMv8.1 features, so let's stick to this when reporting the feature set to the guest. Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx> --- arch/arm64/kvm/sys_regs.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 682fedd7700f..06b2d0dc6c73 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -1093,6 +1093,11 @@ static u64 read_id_reg(const struct kvm_vcpu *vcpu, FEATURE(ID_AA64ISAR1_GPA) | FEATURE(ID_AA64ISAR1_GPI)); break; + case SYS_ID_AA64DFR0_EL1: + /* Limit PMU to ARMv8.1 */ + val &= ~FEATURE(ID_AA64DFR0_PMUVER); + val |= FIELD_PREP(FEATURE(ID_AA64DFR0_PMUVER), 4); + break; } return val; -- 2.20.1 _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
