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-rw-r--r--include/kvm/arm_vgic.h3
-rw-r--r--virt/kvm/arm/vgic/vgic-mmio-v3.c5
-rw-r--r--virt/kvm/arm/vgic/vgic.h2
3 files changed, 10 insertions, 0 deletions
diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h
index 53f631bdec75..ba9fb450aa1b 100644
--- a/include/kvm/arm_vgic.h
+++ b/include/kvm/arm_vgic.h
@@ -73,6 +73,9 @@ struct vgic_global {
/* Only needed for the legacy KVM_CREATE_IRQCHIP */
bool can_emulate_gicv2;
+ /* Hardware has GICv4? */
+ bool has_gicv4;
+
/* GIC system register CPU interface */
struct static_key_false gicv3_cpuif;
diff --git a/virt/kvm/arm/vgic/vgic-mmio-v3.c b/virt/kvm/arm/vgic/vgic-mmio-v3.c
index 83786108829e..671fe81f8e1d 100644
--- a/virt/kvm/arm/vgic/vgic-mmio-v3.c
+++ b/virt/kvm/arm/vgic/vgic-mmio-v3.c
@@ -54,6 +54,11 @@ bool vgic_has_its(struct kvm *kvm)
return dist->has_its;
}
+bool vgic_supports_direct_msis(struct kvm *kvm)
+{
+ return kvm_vgic_global_state.has_gicv4 && vgic_has_its(kvm);
+}
+
static unsigned long vgic_mmio_read_v3_misc(struct kvm_vcpu *vcpu,
gpa_t addr, unsigned int len)
{
diff --git a/virt/kvm/arm/vgic/vgic.h b/virt/kvm/arm/vgic/vgic.h
index 0ac85045c0c7..67509b203cf5 100644
--- a/virt/kvm/arm/vgic/vgic.h
+++ b/virt/kvm/arm/vgic/vgic.h
@@ -241,4 +241,6 @@ int vgic_its_resolve_lpi(struct kvm *kvm, struct vgic_its *its,
u32 devid, u32 eventid, struct vgic_irq **irq);
struct vgic_its *vgic_msi_to_its(struct kvm *kvm, struct kvm_msi *msi);
+bool vgic_supports_direct_msis(struct kvm *kvm);
+
#endif