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authorShannon Zhao <shannon.zhao@linaro.org>2016-01-11 21:35:32 +0800
committerMarc Zyngier <marc.zyngier@arm.com>2016-02-29 18:34:21 +0000
commitbb0c70bcca6ba3c84afc2da7426f3b923bbe6825 (patch)
treed9be51e3943387e1d402d84040541e51ee3a2525 /arch/arm64/kvm
parentf577f6c2a6a5ccabe98061f256a1e2ff468d5e93 (diff)
downloadlinux-bb0c70bcca6ba3c84afc2da7426f3b923bbe6825.tar.bz2
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>
Diffstat (limited to 'arch/arm64/kvm')
-rw-r--r--arch/arm64/kvm/guest.c51
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
index fcb778899a38..dbe45c364bbb 100644
--- a/arch/arm64/kvm/guest.c
+++ b/arch/arm64/kvm/guest.c
@@ -380,3 +380,54 @@ int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
}
return 0;
}
+
+int kvm_arm_vcpu_arch_set_attr(struct kvm_vcpu *vcpu,
+ struct kvm_device_attr *attr)
+{
+ int ret;
+
+ switch (attr->group) {
+ case KVM_ARM_VCPU_PMU_V3_CTRL:
+ ret = kvm_arm_pmu_v3_set_attr(vcpu, attr);
+ break;
+ default:
+ ret = -ENXIO;
+ break;
+ }
+
+ return ret;
+}
+
+int kvm_arm_vcpu_arch_get_attr(struct kvm_vcpu *vcpu,
+ struct kvm_device_attr *attr)
+{
+ int ret;
+
+ switch (attr->group) {
+ case KVM_ARM_VCPU_PMU_V3_CTRL:
+ ret = kvm_arm_pmu_v3_get_attr(vcpu, attr);
+ break;
+ default:
+ ret = -ENXIO;
+ break;
+ }
+
+ return ret;
+}
+
+int kvm_arm_vcpu_arch_has_attr(struct kvm_vcpu *vcpu,
+ struct kvm_device_attr *attr)
+{
+ int ret;
+
+ switch (attr->group) {
+ case KVM_ARM_VCPU_PMU_V3_CTRL:
+ ret = kvm_arm_pmu_v3_has_attr(vcpu, attr);
+ break;
+ default:
+ ret = -ENXIO;
+ break;
+ }
+
+ return ret;
+}