[PATCH v5 3/5] KVM: arm64: Add support for PSCI v1.2 and v1.3

David Woodhouse
2024-09-26T18:46:07Z

From: David Woodhouse <dwmw@amazon.co.uk>

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
---
arch/arm64/kvm/hypercalls.c | 2 ++
arch/arm64/kvm/psci.c | 6 +++++-
include/kvm/arm_psci.h | 4 +++-
3 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/kvm/hypercalls.c b/arch/arm64/kvm/hypercalls.c
index 5763d979d8ca..9c6267ca2b82 100644
--- a/arch/arm64/kvm/hypercalls.c
+++ b/arch/arm64/kvm/hypercalls.c
@@ -575,6 +575,8 @@ int kvm_arm_set_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
case KVM_ARM_PSCI_0_2:
case KVM_ARM_PSCI_1_0:
case KVM_ARM_PSCI_1_1:
+ case KVM_ARM_PSCI_1_2:
+ case KVM_ARM_PSCI_1_3:
if (!wants_02)
return -EINVAL;
vcpu->kvm->arch.psci_version = val;
diff --git a/arch/arm64/kvm/psci.c b/arch/arm64/kvm/psci.c
index fd0f82464f7d..5177dda5a411 100644
--- a/arch/arm64/kvm/psci.c
+++ b/arch/arm64/kvm/psci.c
@@ -328,7 +328,7 @@ static int kvm_psci_1_x_call(struct kvm_vcpu *vcpu, u32 minor)

switch(psci_fn) {
case PSCI_0_2_FN_PSCI_VERSION:
- val = minor == 0 ? KVM_ARM_PSCI_1_0 : KVM_ARM_PSCI_1_1;
+ val = PSCI_VERSION(1, minor);
break;
case PSCI_1_0_FN_PSCI_FEATURES:
arg = smccc_get_arg1(vcpu);
@@ -486,6 +486,10 @@ int kvm_psci_call(struct kvm_vcpu *vcpu)
}

switch (version) {
+ case KVM_ARM_PSCI_1_3:
+ return kvm_psci_1_x_call(vcpu, 3);
+ case KVM_ARM_PSCI_1_2:
+ return kvm_psci_1_x_call(vcpu, 2);
case KVM_ARM_PSCI_1_1:
return kvm_psci_1_x_call(vcpu, 1);
case KVM_ARM_PSCI_1_0:
diff --git a/include/kvm/arm_psci.h b/include/kvm/arm_psci.h
index e8fb624013d1..cbaec804eb83 100644
--- a/include/kvm/arm_psci.h
+++ b/include/kvm/arm_psci.h
@@ -14,8 +14,10 @@
#define KVM_ARM_PSCI_0_2 PSCI_VERSION(0, 2)
#define KVM_ARM_PSCI_1_0 PSCI_VERSION(1, 0)
#define KVM_ARM_PSCI_1_1 PSCI_VERSION(1, 1)
+#define KVM_ARM_PSCI_1_2 PSCI_VERSION(1, 2)
+#define KVM_ARM_PSCI_1_3 PSCI_VERSION(1, 3)

-#define KVM_ARM_PSCI_LATEST KVM_ARM_PSCI_1_1
+#define KVM_ARM_PSCI_LATEST KVM_ARM_PSCI_1_3

static inline int kvm_psci_version(struct kvm_vcpu *vcpu)
{
--
2.44.0