| Message ID | 1458899181-17896-2-git-send-email-zhaoshenglong@huawei.com |
|---|---|
| State | New |
| Headers | show |
On Fri, Mar 25, 2016 at 05:46:19PM +0800, Shannon Zhao wrote: > From: Shannon Zhao <shannon.zhao@linaro.org> > > Check if kvm supports guest PMUv3. If so, set the corresponding feature > bit for vcpu. > > Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org> > --- > linux-headers/asm-arm64/kvm.h | 6 ++++++ > linux-headers/linux/kvm.h | 2 ++ The above two files should be updated with their own patch and not manually. Update with scripts/update-linux-headers.sh > target-arm/cpu-qom.h | 2 ++ > target-arm/kvm64.c | 5 +++++ > 4 files changed, 15 insertions(+) > > diff --git a/linux-headers/asm-arm64/kvm.h b/linux-headers/asm-arm64/kvm.h > index a2fd4d9..3097f2f 100644 > --- a/linux-headers/asm-arm64/kvm.h > +++ b/linux-headers/asm-arm64/kvm.h > @@ -94,6 +94,7 @@ struct kvm_regs { > #define KVM_ARM_VCPU_POWER_OFF 0 /* CPU is started in OFF state */ > #define KVM_ARM_VCPU_EL1_32BIT 1 /* CPU running a 32bit VM */ > #define KVM_ARM_VCPU_PSCI_0_2 2 /* CPU uses PSCI v0.2 */ > +#define KVM_ARM_VCPU_PMU_V3 3 > > struct kvm_vcpu_init { > __u32 target; > @@ -204,6 +205,11 @@ struct kvm_arch_memory_slot { > #define KVM_DEV_ARM_VGIC_GRP_CTRL 4 > #define KVM_DEV_ARM_VGIC_CTRL_INIT 0 > > +/* Device Control API on vcpu fd */ > +#define KVM_ARM_VCPU_PMU_V3_CTRL 0 > +#define KVM_ARM_VCPU_PMU_V3_IRQ 0 > +#define KVM_ARM_VCPU_PMU_V3_INIT 1 > + > /* KVM_IRQ_LINE irq field index values */ > #define KVM_ARM_IRQ_TYPE_SHIFT 24 > #define KVM_ARM_IRQ_TYPE_MASK 0xff > diff --git a/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h > index 4a56b9e..104210a 100644 > --- a/linux-headers/linux/kvm.h > +++ b/linux-headers/linux/kvm.h > @@ -856,6 +856,8 @@ struct kvm_ppc_smmu_info { > #define KVM_CAP_IOEVENTFD_ANY_LENGTH 122 > #define KVM_CAP_HYPERV_SYNIC 123 > #define KVM_CAP_S390_RI 124 > +#define KVM_CAP_ARM_PMU_V3 125 > +#define KVM_CAP_VCPU_ATTRIBUTES 126 These defines are wrong, but will be fixed with update-linux-headers > > #ifdef KVM_CAP_IRQ_ROUTING > > diff --git a/target-arm/cpu-qom.h b/target-arm/cpu-qom.h > index 1061c08..93aa6a4 100644 > --- a/target-arm/cpu-qom.h > +++ b/target-arm/cpu-qom.h > @@ -105,6 +105,8 @@ typedef struct ARMCPU { > bool powered_off; > /* CPU has security extension */ > bool has_el3; > + /* CPU has PMU (Performance Monitor Unit) */ > + bool has_pmu; > > /* CPU has memory protection unit */ > bool has_mpu; > diff --git a/target-arm/kvm64.c b/target-arm/kvm64.c > index e8527bf..b364789 100644 > --- a/target-arm/kvm64.c > +++ b/target-arm/kvm64.c > @@ -461,6 +461,11 @@ int kvm_arch_init_vcpu(CPUState *cs) > if (!arm_feature(&cpu->env, ARM_FEATURE_AARCH64)) { > cpu->kvm_init_features[0] |= 1 << KVM_ARM_VCPU_EL1_32BIT; > } > + if (kvm_irqchip_in_kernel() && > + kvm_check_extension(cs->kvm_state, KVM_CAP_ARM_PMU_V3)) { > + cpu->has_pmu = true; > + cpu->kvm_init_features[0] |= 1 << KVM_ARM_VCPU_PMU_V3; > + } > > /* Do KVM_ARM_VCPU_INIT ioctl */ > ret = kvm_arm_vcpu_init(cs); > -- > 2.0.4 > Otherwise looks good. drew
diff --git a/linux-headers/asm-arm64/kvm.h b/linux-headers/asm-arm64/kvm.h index a2fd4d9..3097f2f 100644 --- a/linux-headers/asm-arm64/kvm.h +++ b/linux-headers/asm-arm64/kvm.h @@ -94,6 +94,7 @@ struct kvm_regs { #define KVM_ARM_VCPU_POWER_OFF 0 /* CPU is started in OFF state */ #define KVM_ARM_VCPU_EL1_32BIT 1 /* CPU running a 32bit VM */ #define KVM_ARM_VCPU_PSCI_0_2 2 /* CPU uses PSCI v0.2 */ +#define KVM_ARM_VCPU_PMU_V3 3 struct kvm_vcpu_init { __u32 target; @@ -204,6 +205,11 @@ struct kvm_arch_memory_slot { #define KVM_DEV_ARM_VGIC_GRP_CTRL 4 #define KVM_DEV_ARM_VGIC_CTRL_INIT 0 +/* Device Control API on vcpu fd */ +#define KVM_ARM_VCPU_PMU_V3_CTRL 0 +#define KVM_ARM_VCPU_PMU_V3_IRQ 0 +#define KVM_ARM_VCPU_PMU_V3_INIT 1 + /* KVM_IRQ_LINE irq field index values */ #define KVM_ARM_IRQ_TYPE_SHIFT 24 #define KVM_ARM_IRQ_TYPE_MASK 0xff diff --git a/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h index 4a56b9e..104210a 100644 --- a/linux-headers/linux/kvm.h +++ b/linux-headers/linux/kvm.h @@ -856,6 +856,8 @@ struct kvm_ppc_smmu_info { #define KVM_CAP_IOEVENTFD_ANY_LENGTH 122 #define KVM_CAP_HYPERV_SYNIC 123 #define KVM_CAP_S390_RI 124 +#define KVM_CAP_ARM_PMU_V3 125 +#define KVM_CAP_VCPU_ATTRIBUTES 126 #ifdef KVM_CAP_IRQ_ROUTING diff --git a/target-arm/cpu-qom.h b/target-arm/cpu-qom.h index 1061c08..93aa6a4 100644 --- a/target-arm/cpu-qom.h +++ b/target-arm/cpu-qom.h @@ -105,6 +105,8 @@ typedef struct ARMCPU { bool powered_off; /* CPU has security extension */ bool has_el3; + /* CPU has PMU (Performance Monitor Unit) */ + bool has_pmu; /* CPU has memory protection unit */ bool has_mpu; diff --git a/target-arm/kvm64.c b/target-arm/kvm64.c index e8527bf..b364789 100644 --- a/target-arm/kvm64.c +++ b/target-arm/kvm64.c @@ -461,6 +461,11 @@ int kvm_arch_init_vcpu(CPUState *cs) if (!arm_feature(&cpu->env, ARM_FEATURE_AARCH64)) { cpu->kvm_init_features[0] |= 1 << KVM_ARM_VCPU_EL1_32BIT; } + if (kvm_irqchip_in_kernel() && + kvm_check_extension(cs->kvm_state, KVM_CAP_ARM_PMU_V3)) { + cpu->has_pmu = true; + cpu->kvm_init_features[0] |= 1 << KVM_ARM_VCPU_PMU_V3; + } /* Do KVM_ARM_VCPU_INIT ioctl */ ret = kvm_arm_vcpu_init(cs);