arm64: KVM: Add a new vcpu device control group for PMUv3

To configure the virtual PMUv3 overflow interrupt number, we use the
vcpu kvm_device ioctl, encapsulating the KVM_ARM_VCPU_PMU_V3_IRQ
attribute within the KVM_ARM_VCPU_PMU_V3_CTRL group.

After configuring the PMUv3, call the vcpu ioctl with attribute
KVM_ARM_VCPU_PMU_V3_INIT to initialize the PMUv3.

Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Acked-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
index 166232356291..75c7fed5d14c 100644
--- a/arch/arm/kvm/arm.c
+++ b/arch/arm/kvm/arm.c
@@ -835,6 +835,7 @@ static int kvm_arm_vcpu_set_attr(struct kvm_vcpu *vcpu,
 
         switch (attr->group) {
         default:
+                ret = kvm_arm_vcpu_arch_set_attr(vcpu, attr);
                 break;
         }
 
@@ -848,6 +849,7 @@ static int kvm_arm_vcpu_get_attr(struct kvm_vcpu *vcpu,
 
         switch (attr->group) {
         default:
+                ret = kvm_arm_vcpu_arch_get_attr(vcpu, attr);
                 break;
         }
 
@@ -861,6 +863,7 @@ static int kvm_arm_vcpu_has_attr(struct kvm_vcpu *vcpu,
 
         switch (attr->group) {
         default:
+                ret = kvm_arm_vcpu_arch_has_attr(vcpu, attr);
                 break;
         }