Since the following commit, PMU registers are hidden from user until
it's explicitly requested by feeding feature (KVM_ARM_VCPU_PMU_V3).
Otherwise, 74 missing PMU registers are missing as the following
log indicates.
11663111cd49 ("KVM: arm64: Hide PMU registers from userspace when not available")
# ./get-reg-list
Number blessed registers: 308
Number registers: 238
There are 74 missing registers.
The following lines are missing registers:
ARM64_SYS_REG(3, 0, 9, 14, 1),
ARM64_SYS_REG(3, 0, 9, 14, 2),
:
ARM64_SYS_REG(3, 3, 14, 15, 7),
This fixes the issue of wrongly reported missing PMU registers by
requesting it explicitly.
Signed-off-by: Gavin Shan <gshan@xxxxxxxxxx>
---
tools/testing/selftests/kvm/aarch64/get-reg-list.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/tools/testing/selftests/kvm/aarch64/get-reg-list.c b/tools/testing/selftests/kvm/aarch64/get-reg-list.c
index 486932164cf2..6c6bdc6f5dc3 100644
--- a/tools/testing/selftests/kvm/aarch64/get-reg-list.c
+++ b/tools/testing/selftests/kvm/aarch64/get-reg-list.c
@@ -314,6 +314,8 @@ static void core_reg_fixup(void)
static void prepare_vcpu_init(struct kvm_vcpu_init *init)
{
+ init->features[0] |= 1 << KVM_ARM_VCPU_PMU_V3;
+
if (reg_list_sve())
init->features[0] |= 1 << KVM_ARM_VCPU_SVE;
}
--
2.23.0
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