[v2] target/arm: Add vSPE support to KVM guest

[PATCH v2 02/12] target/arm/kvm: spe: Add helper to detect SPE when using KVM

Posted by Haibo Xu 5 years, 2 months ago

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Haibo Xu <haibo.xu@linaro.org>
---
 target/arm/kvm.c     |  5 +++++
 target/arm/kvm_arm.h | 13 +++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/target/arm/kvm.c b/target/arm/kvm.c
index 8bb7318378..58f991e890 100644
--- a/target/arm/kvm.c
+++ b/target/arm/kvm.c
@@ -214,6 +214,11 @@ bool kvm_arm_pmu_supported(void)
     return kvm_check_extension(kvm_state, KVM_CAP_ARM_PMU_V3);
 }
 
+bool kvm_arm_spe_supported(void)
+{
+    return kvm_check_extension(kvm_state, KVM_CAP_ARM_SPE_V1);
+}
+
 int kvm_arm_get_max_vm_ipa_size(MachineState *ms)
 {
     KVMState *s = KVM_STATE(ms->accelerator);
diff --git a/target/arm/kvm_arm.h b/target/arm/kvm_arm.h
index adb38514bf..f79655674e 100644
--- a/target/arm/kvm_arm.h
+++ b/target/arm/kvm_arm.h
@@ -283,6 +283,14 @@ bool kvm_arm_aarch32_supported(void);
  */
 bool kvm_arm_pmu_supported(void);
 
+/**
+ * kvm_arm_spe_supported:
+ *
+ * Returns: true if the KVM VCPU can enable its SPE
+ * and false otherwise.
+ */
+bool kvm_arm_spe_supported(void);
+
 /**
  * kvm_arm_sve_supported:
  *
@@ -366,6 +374,11 @@ static inline bool kvm_arm_pmu_supported(void)
     return false;
 }
 
+static inline bool kvm_arm_spe_supported(void)
+{
+    return false;
+}
+
 static inline bool kvm_arm_sve_supported(void)
 {
     return false;
-- 
2.17.1

Re: [PATCH v2 02/12] target/arm/kvm: spe: Add helper to detect SPE when using KVM

Posted by Andrew Jones 5 years, 2 months ago

On Tue, Sep 08, 2020 at 08:13:20AM +0000, Haibo Xu wrote:
> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
> Signed-off-by: Haibo Xu <haibo.xu@linaro.org>
> ---
>  target/arm/kvm.c     |  5 +++++
>  target/arm/kvm_arm.h | 13 +++++++++++++
>  2 files changed, 18 insertions(+)
> 
> diff --git a/target/arm/kvm.c b/target/arm/kvm.c
> index 8bb7318378..58f991e890 100644
> --- a/target/arm/kvm.c
> +++ b/target/arm/kvm.c
> @@ -214,6 +214,11 @@ bool kvm_arm_pmu_supported(void)
>      return kvm_check_extension(kvm_state, KVM_CAP_ARM_PMU_V3);
>  }
>

Reviewed-by: Andrew Jones <drjones@redhat.com>