[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH 06/15] s390x: Dispatch interrupts to KVM or the
From: |
Aurelien Jarno |
Subject: |
Re: [Qemu-devel] [PATCH 06/15] s390x: Dispatch interrupts to KVM or the real CPU |
Date: |
Sun, 10 Apr 2011 22:37:41 +0200 |
User-agent: |
Mutt/1.5.20 (2009-06-14) |
On Mon, Apr 04, 2011 at 04:32:15PM +0200, Alexander Graf wrote:
> 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);
cpu_inject_ext() is defined in a later patch so the patch series should
probably be reordered to not break bisecting (for the KVM version only
in that case).
> + }
> }
>
> static unsigned virtio_s390_get_features(void *opaque)
> --
> 1.6.0.2
>
>
>
--
Aurelien Jarno GPG: 1024D/F1BCDB73
address@hidden http://www.aurel32.net
[Qemu-devel] [PATCH 15/15] tcg: use ext op for deposit, Alexander Graf, 2011/04/04