@@ -1540,11 +1540,18 @@ static void machvirt_init(MachineState *machine)
vms->gic_version = 3;
}
} else {
- vms->gic_version = kvm_arm_vgic_probe();
- if (!vms->gic_version) {
+ int probe_bitmap = kvm_arm_vgic_probe();
+
+ if (!probe_bitmap) {
error_report(
"Unable to determine GIC version supported by host");
exit(1);
+ } else {
+ if (probe_bitmap & KVM_ARM_VGIC_V3) {
+ vms->gic_version = 3;
+ } else {
+ vms->gic_version = 2;
+ }
}
}
}
@@ -874,15 +874,17 @@ int kvm_arch_irqchip_create(KVMState *s)
int kvm_arm_vgic_probe(void)
{
+ int val = 0;
+
if (kvm_create_device(kvm_state,
KVM_DEV_TYPE_ARM_VGIC_V3, true) == 0) {
- return 3;
- } else if (kvm_create_device(kvm_state,
- KVM_DEV_TYPE_ARM_VGIC_V2, true) == 0) {
- return 2;
- } else {
- return 0;
+ val |= KVM_ARM_VGIC_V3;
}
+ if (kvm_create_device(kvm_state,
+ KVM_DEV_TYPE_ARM_VGIC_V2, true) == 0) {
+ val |= KVM_ARM_VGIC_V2;
+ }
+ return val;
}
int kvm_arm_set_irq(int cpu, int irqtype, int irq, int level)
@@ -15,6 +15,9 @@
#include "exec/memory.h"
#include "qemu/error-report.h"
+#define KVM_ARM_VGIC_V2 (1 << 0)
+#define KVM_ARM_VGIC_V3 (1 << 1)
+
/**
* kvm_arm_vcpu_init:
* @cs: CPUState
Let convert kvm_arm_vgic_probe() so that it returns a bitmap of supported VGIC versions. This allows to expose the case where the host GICv3 also supports GICv2 emulation. Signed-off-by: Eric Auger <eric.auger@redhat.com> --- hw/arm/virt.c | 11 +++++++++-- target/arm/kvm.c | 14 ++++++++------ target/arm/kvm_arm.h | 3 +++ 3 files changed, 20 insertions(+), 8 deletions(-)