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Re: [Qemu-devel] [PATCH] hid: Extend the event queue size to 1024
From: |
Gerd Hoffmann |
Subject: |
Re: [Qemu-devel] [PATCH] hid: Extend the event queue size to 1024 |
Date: |
Mon, 18 Apr 2016 11:21:38 +0200 |
On Mo, 2016-04-18 at 09:26 +0200, Alexander Graf wrote:
>
> On 18.04.16 08:53, Gerd Hoffmann wrote:
> > Hi,
> >
> >> Vnc already uses qemu_input_event_send_key_delay today, so I'm not sure
> >> where things fall apart.
> >
> > Well, not everywhere. Try the attached patch.
> >
> > Also worth trying:
> > * use xhci instead of ohci (current slof should handle
> > kbd-via-xhci fine)
> > * use virtio-keyboard (no slof driver yet as far I know, also needs
> > a recent linux kernel).
>
> Ideally I would really like to switch to virtio-input and virtio-gpu for
> AArch64, but there are no drivers at all in OVMF. Do you have any plans
> to write them?
Not investigated yet. There are virtio 1.0 patches in flight for edk2,
once they are landed it should be alot simpler (virtio 1.0 is mandatory
for virtio-gpu and virtio-input).
Keyboard should be easy, it's a simple device.
GPU is tricky. Guest is expected to explicitly request display updates.
So simply setting up a dump framebuffer, then depending on dirty page
tracking for screen updates isn't going to fly. Not sure EFI can handle
that.
The virtio-vga device has a vga compatibility mode additionally to
native virtio. SLOF uses that IIRC. But I think on aarch64 that isn't
going to fly either due to the cache coherency issues there.
cheers,
Gerd
Re: [Qemu-devel] [PATCH] hid: Extend the event queue size to 1024, Juan Quintela, 2016/04/19