[PATCH v18 18/23] KVM: arm64: CCA: Mandate VGIC_V3 for Realms
From: Suzuki K Poulose <suzuki.poulose@arm.com>
Date: 2026-09-15 16:02:47
Also in:
kvm, kvmarm, linux-coco, lkml
Subsystem:
arm64 port (aarch64 architecture), kernel virtual machine for arm64 (kvm/arm64), the rest · Maintainers:
Catalin Marinas, Will Deacon, Marc Zyngier, Oliver Upton, Linus Torvalds
RMM mandates that we use a VGIC v3 for a Realm and nothing else is supported. Mandate this in KVM. Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> --- arch/arm64/kvm/vgic/vgic-init.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/arm64/kvm/vgic/vgic-init.c b/arch/arm64/kvm/vgic/vgic-init.c
index 4012df6002ea6..452c085073f3e 100644
--- a/arch/arm64/kvm/vgic/vgic-init.c
+++ b/arch/arm64/kvm/vgic/vgic-init.c@@ -84,6 +84,9 @@ int kvm_vgic_create(struct kvm *kvm, u32 type) !kvm_vgic_global_state.can_emulate_gicv2) return -ENODEV; + /* Realms only support VGIC_V3 */ + if (kvm_vm_is_realm(kvm) && type != KVM_DEV_TYPE_ARM_VGIC_V3) + return -ENODEV; /* * Ensure mutual exclusion with vCPU creation and any vCPU ioctls by: *
--
2.43.0