diff mbox

[RFC,5/6] KVM: arm/arm64: enable MSI routing

Message ID 1434649258-27065-6-git-send-email-eric.auger@linaro.org (mailing list archive)
State New, archived
Headers show

Commit Message

Eric Auger June 18, 2015, 5:40 p.m. UTC 
Up to now, only irqchip routing entries could be set. This patch
adds the capability to insert MSI routing entries, extended or
standard ones. Although standard MSI entries can be set, their
injection still is not supported. For ARM64, let's also increase
KVM_MAX_IRQ_ROUTES to 4096.

Signed-off-by: Eric Auger <eric.auger@linaro.org>
---
 include/linux/kvm_host.h |  2 ++
 virt/kvm/arm/vgic.c      | 13 +++++++++++++
 2 files changed, 15 insertions(+)
diff mbox

Patch

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index e1c1c0d..6cacf11 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -927,6 +927,8 @@  static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq)
 
 #ifdef CONFIG_S390
 #define KVM_MAX_IRQ_ROUTES 4096 //FIXME: we can have more than that...
+#elif defined(CONFIG_ARM64)
+#define KVM_MAX_IRQ_ROUTES 4096 //FIXME: we can have more than that too...
 #else
 #define KVM_MAX_IRQ_ROUTES 1024
 #endif
diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
index 212a5ff..16d232f 100644
--- a/virt/kvm/arm/vgic.c
+++ b/virt/kvm/arm/vgic.c
@@ -2256,6 +2256,19 @@  int kvm_set_routing_entry(struct kvm_kernel_irq_routing_entry *e,
 		    (e->irqchip.irqchip >= KVM_NR_IRQCHIPS))
 			goto out;
 		break;
+	case KVM_IRQ_ROUTING_MSI:
+		e->set = kvm_set_msi;
+		e->msi.address_lo = ue->u.msi.address_lo;
+		e->msi.address_hi = ue->u.msi.address_hi;
+		e->msi.data = ue->u.msi.data;
+		break;
+	case KVM_IRQ_ROUTING_EXTENDED_MSI:
+		e->set = kvm_set_msi;
+		e->ext_msi.address_lo = ue->u.ext_msi.address_lo;
+		e->ext_msi.address_hi = ue->u.ext_msi.address_hi;
+		e->ext_msi.data = ue->u.ext_msi.data;
+		e->ext_msi.devid = ue->u.ext_msi.devid;
+		break;
 	default:
 		goto out;
 	}