Latest linux kernel supports in-kernel emulation of PSCI v0.2 but
to enable it we need to select KVM_ARM_VCPU_PSCI_0_2 feature using
KVM_ARM_VCPU_INIT ioctl.
Also, we can use KVM_ARM_VCPU_PSCI_0_2 feature for VCPU only when
linux kernel has KVM_CAP_ARM_PSCI_0_2 capability.
This patch updates kvm_arch_init_vcpu() to enable KVM_ARM_VCPU_PSCI_0_2
feature for VCPU when KVM ARM/ARM64 has KVM_CAP_ARM_PSCI_0_2 capability.
Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@xxxxxxxxxx>
Signed-off-by: Anup Patel <anup.patel@xxxxxxxxxx>
Reviewed-by: Peter Maydell <peter.maydell@xxxxxxxxxx>
---
target-arm/kvm32.c | 3 +++
target-arm/kvm64.c | 3 +++
2 files changed, 6 insertions(+)
diff --git a/target-arm/kvm32.c b/target-arm/kvm32.c
index b142e90..52d626c 100644
--- a/target-arm/kvm32.c
+++ b/target-arm/kvm32.c
@@ -183,6 +183,9 @@ int kvm_arch_init_vcpu(CPUState *cs)
if (cpu->start_powered_off) {
cpu->kvm_init_features[0] |= 1 << KVM_ARM_VCPU_POWER_OFF;
}
+ if (kvm_check_extension(cs->kvm_state, KVM_CAP_ARM_PSCI_0_2)) {
+ cpu->kvm_init_features[0] |= 1 << KVM_ARM_VCPU_PSCI_0_2;
+ }
/* Do KVM_ARM_VCPU_INIT ioctl */
ret = kvm_arm_vcpu_init(cs);
diff --git a/target-arm/kvm64.c b/target-arm/kvm64.c
index 9936aa8..828ffb6 100644
--- a/target-arm/kvm64.c
+++ b/target-arm/kvm64.c
@@ -91,6 +91,9 @@ int kvm_arch_init_vcpu(CPUState *cs)
if (cpu->start_powered_off) {
cpu->kvm_init_features[0] |= 1 << KVM_ARM_VCPU_POWER_OFF;
}
+ if (kvm_check_extension(cs->kvm_state, KVM_CAP_ARM_PSCI_0_2)) {
+ cpu->kvm_init_features[0] |= 1 << KVM_ARM_VCPU_PSCI_0_2;
+ }
/* Do KVM_ARM_VCPU_INIT ioctl */
ret = kvm_arm_vcpu_init(cs);
--
1.9.1
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