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[PATCH v2 2/6] target/arm/kvm: Add helper to detect el2 when using KVM
From: |
Haibo Xu |
Subject: |
[PATCH v2 2/6] target/arm/kvm: Add helper to detect el2 when using KVM |
Date: |
Thu, 1 Apr 2021 10:40:54 +0000 |
Signed-off-by: Haibo Xu <haibo.xu@linaro.org>
---
target/arm/kvm64.c | 5 +++++
target/arm/kvm_arm.h | 13 +++++++++++++
2 files changed, 18 insertions(+)
diff --git a/target/arm/kvm64.c b/target/arm/kvm64.c
index dff85f6db9..9cacaf2eb8 100644
--- a/target/arm/kvm64.c
+++ b/target/arm/kvm64.c
@@ -721,6 +721,11 @@ bool kvm_arm_steal_time_supported(void)
return kvm_check_extension(kvm_state, KVM_CAP_STEAL_TIME);
}
+bool kvm_arm_el2_supported(void)
+{
+ return kvm_check_extension(kvm_state, KVM_CAP_ARM_EL2);
+}
+
QEMU_BUILD_BUG_ON(KVM_ARM64_SVE_VQ_MIN != 1);
void kvm_arm_sve_get_vls(CPUState *cs, unsigned long *map)
diff --git a/target/arm/kvm_arm.h b/target/arm/kvm_arm.h
index 34f8daa377..7d7fc7981b 100644
--- a/target/arm/kvm_arm.h
+++ b/target/arm/kvm_arm.h
@@ -285,6 +285,14 @@ void kvm_arm_steal_time_finalize(ARMCPU *cpu, Error
**errp);
*/
bool kvm_arm_steal_time_supported(void);
+/**
+ * kvm_arm_el2_supported:
+ *
+ * Returns: true if KVM can enable el2(nested virtualization)
+ * and false otherwise.
+ */
+bool kvm_arm_el2_supported(void);
+
/**
* kvm_arm_aarch32_supported:
*
@@ -398,6 +406,11 @@ static inline bool kvm_arm_steal_time_supported(void)
return false;
}
+static inline bool kvm_arm_el2_supported(void)
+{
+ return false;
+}
+
/*
* These functions should never actually be called without KVM support.
*/
--
2.17.1
- [PATCH v2 0/6] target/arm: Add nested virtualization support, Haibo Xu, 2021/04/01
- [PATCH v2 1/6] Update linux header with new arm64 NV macro, Haibo Xu, 2021/04/01
- [PATCH v2 2/6] target/arm/kvm: Add helper to detect el2 when using KVM,
Haibo Xu <=
- [PATCH v2 3/6] target/arm/kvm: Add an option to turn on/off el2 support, Haibo Xu, 2021/04/01
- [PATCH v2 4/6] hw/intc/arm_gicv3: Enable support for setting vGIC maintenance IRQ, Haibo Xu, 2021/04/01
- [PATCH v2 5/6] target/arm/cpu: Enable 'el2' to work with host/max cpu, Haibo Xu, 2021/04/01
- [PATCH v2 6/6] target/arm: Add vCPU feature 'el2' test., Haibo Xu, 2021/04/01