[PATCH v18 18/23] KVM: arm64: CCA: Mandate VGIC_V3 for Realms

[Suzuki K Poulose]

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 at 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