Hi Sebastian,
On 12/11/25 19:13, Sebastian Ott wrote:
Provide a kvm specific vcpu property to override the default
(as of kernel v6.13 that would be PSCI v1.3) PSCI version emulated
by kvm. Current valid values are: 0.1, 0.2, 1.0, 1.1, 1.2, and 1.3
Note: in order to support PSCI v0.1 we need to drop vcpu
initialization with KVM_CAP_ARM_PSCI_0_2 in that case.
Signed-off-by: Sebastian Ott <[email protected]>
---
docs/system/arm/cpu-features.rst | 5 +++
target/arm/cpu.h | 6 +++
target/arm/kvm.c | 64 +++++++++++++++++++++++++++++++-
3 files changed, 74 insertions(+), 1 deletion(-)
diff --git a/target/arm/kvm.c b/target/arm/kvm.c
index 0d57081e69..e91b1abfb8 100644
--- a/target/arm/kvm.c
+++ b/target/arm/kvm.c
@@ -484,6 +484,49 @@ static void kvm_steal_time_set(Object *obj, bool value,
Error **errp)
ARM_CPU(obj)->kvm_steal_time = value ? ON_OFF_AUTO_ON : ON_OFF_AUTO_OFF;
}
+struct psci_version {
+ uint32_t number;
+ const char *str;
+};
+
+static const struct psci_version psci_versions[] = {
+ { QEMU_PSCI_VERSION_0_1, "0.1" },
+ { QEMU_PSCI_VERSION_0_2, "0.2" },
+ { QEMU_PSCI_VERSION_1_0, "1.0" },
+ { QEMU_PSCI_VERSION_1_1, "1.1" },
+ { QEMU_PSCI_VERSION_1_2, "1.2" },
+ { QEMU_PSCI_VERSION_1_3, "1.3" },
+ { -1, NULL },
+};
@@ -505,6 +548,12 @@ void kvm_arm_add_vcpu_properties(ARMCPU *cpu)
kvm_steal_time_set);
object_property_set_description(obj, "kvm-steal-time",
"Set off to disable KVM steal time.");
+
+ object_property_add_str(obj, "kvm-psci-version", kvm_get_psci_version,
+ kvm_set_psci_version);
+ object_property_set_description(obj, "kvm-psci-version",
+ "Set PSCI version. "
+ "Valid values are 0.1, 0.2, 1.0, 1.1, 1.2,
1.3");
Could we enumerate from psci_versions[] here?
}
Thanks,
Phil.
