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[Qemu-devel] [PATCH 06/15] s390x: Dispatch interrupts to KVM or the real
From: |
Alexander Graf |
Subject: |
[Qemu-devel] [PATCH 06/15] s390x: Dispatch interrupts to KVM or the real CPU |
Date: |
Mon, 4 Apr 2011 16:32:15 +0200 |
The KVM interrupt injection path is non-generic for now. So we need to push
knowledge of how to inject a device interrupt using KVM into the actual device
code.
Signed-off-by: Alexander Graf <address@hidden>
---
hw/s390-virtio-bus.c | 10 ++++++++--
1 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/hw/s390-virtio-bus.c b/hw/s390-virtio-bus.c
index 60e0135..35acf53 100644
--- a/hw/s390-virtio-bus.c
+++ b/hw/s390-virtio-bus.c
@@ -43,6 +43,8 @@
do { } while (0)
#endif
+#define VIRTIO_EXT_CODE 0x2603
+
struct BusInfo s390_virtio_bus_info = {
.name = "s390-virtio",
.size = sizeof(VirtIOS390Bus),
@@ -304,9 +306,13 @@ static void virtio_s390_notify(void *opaque, uint16_t
vector)
{
VirtIOS390Device *dev = (VirtIOS390Device*)opaque;
uint64_t token = s390_virtio_device_vq_token(dev, vector);
+ CPUState *env = s390_cpu_addr2state(0);
- /* XXX kvm dependency! */
- kvm_s390_virtio_irq(s390_cpu_addr2state(0), 0, token);
+ if (kvm_enabled()) {
+ kvm_s390_virtio_irq(env, 0, token);
+ } else {
+ cpu_inject_ext(env, VIRTIO_EXT_CODE, 0, token);
+ }
}
static unsigned virtio_s390_get_features(void *opaque)
--
1.6.0.2
[Qemu-devel] [PATCH 15/15] tcg: use ext op for deposit, Alexander Graf, 2011/04/04