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Date: Mon, 18 Apr 2011 21:01:21 +0200
From: Aurelien Jarno <aurelien@aurel32.net>
Message-ID: <20110418190121.GI16178@volta.aurel32.net>
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Subject: Re: [Qemu-devel] [PATCH 08/17] s390x: Dispatch interrupts to KVM or
 the real CPU
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To: Alexander Graf <agraf@suse.de>
Cc: peter.maydell@linaro.org, QEMU-devel Developers <qemu-devel@nongnu.org>, Richard Henderson <rth@twiddle.net>

On Fri, Apr 15, 2011 at 05:32:49PM +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 <agraf@suse.de>
> ---
>  hw/s390-virtio-bus.c |   10 ++++++++--
>  1 files changed, 8 insertions(+), 2 deletions(-)

Thanks, applied.

> diff --git a/hw/s390-virtio-bus.c b/hw/s390-virtio-bus.c
> index 175e5cb..bb49e39 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),
> @@ -305,9 +307,13 @@ 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
> 
> 
> 

-- 
Aurelien Jarno                          GPG: 1024D/F1BCDB73
aurelien@aurel32.net                 http://www.aurel32.net