[Qemu-devel] qxl: qxl's event named "QXL_INTERRUPT_DISPLAY"

[Qemu-devel] qxl: qxl's event named "QXL_INTERRUPT_DISPLAY"

[楼正伟]

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

Thanks.

Re: [Qemu-devel] qxl: qxl's event named "QXL_INTERRUPT_DISPLAY"

[Alon Levy]

> 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.
> 
>