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From: Alon Levy <alevy@redhat.com>
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Subject: Re: [Qemu-devel] qxl: qxl's event named "QXL_INTERRUPT_DISPLAY"
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To: =?utf-8?B?5qW85q2j5Lyf?= <lzw19860818@gmail.com>
Cc: qemu-devel@nongnu.org

> Hi, I'm learning about qxl device in KVM VM. I got a problem and asks
> for help. Thanks.
> 
> The qemu's command is:
>         qemu-system-x86_64 -spice port=5900,disable-ticketing -vga
>         qxl
> --enable-kvm ...
> 
> The code in function 'interface_get_command' is followed:
>         SPICE_RING_POP(ring, notify);
>         if (notify) {
>             qxl_send_events(qxl, QXL_INTERRUPT_DISPLAY);
>         }
> 
> What is the meaning about 'QXL_INTERRUPT_DISPLAY' ?
> Does it means sending a 'QXL_INTERRUPT_DISPLAY' irq to vm?

Yes.

> If so, what's the irq's handler?

It's in the driver code:
http://cgit.freedesktop.org/~airlied/linux/tree/drivers/gpu/drm/qxl/qxl_irq.c?h=qxl-upstream&id=1a401a749cb1f06e637ef0e91fb8c120963aa356#n28

> 
> Thanks.
> 
>