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Re: [Qemu-devel] Cirrus bugs vs endian: how two bugs cancel each other o
From: |
Gerd Hoffmann |
Subject: |
Re: [Qemu-devel] Cirrus bugs vs endian: how two bugs cancel each other out |
Date: |
Mon, 06 Aug 2012 14:57:52 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:10.0.5) Gecko/20120601 Thunderbird/10.0.5 |
On 07/30/12 14:08, Benjamin Herrenschmidt wrote:
> On Mon, 2012-07-30 at 14:58 +0300, Avi Kivity wrote:
>> Let's balkanize some more then?
>>
>> No, qxl is our paravirt vga, we should improve it instead of spawning
>> new ones (which will be horrible in the eyes of the next person to look
>> at them). You should also be getting the drm driver for free.
>>
>> http://spice-space.org/page/DRM
>
> "Free" is a big word here, I wouldn't be surprised if it was totally
> endian busted :-)
Well, not totally. But it used to be, and although a bunch of cleanup &
fixing happened already I doubt spice will run out-of-the-box on
bigendian machines.
> People I've talked to around in the community seem to agree that some
> minor improvements on qemu-vga are worthwhile, so I'm doing them,
> nothing drastic, mostly having a mirror of the legacy IO registers in an
> MMIO BAR so it's more usable for non-x86 platforms, and I'm about to add
> some simplistic 2D blit facility so we can have a semi-decent fb console
> over vnc. I can trivially do an equivalent of cirrusdrmfb for it so we
> get X mode setting / RandR.
>
> That gives us a baseline for mostly unaccelerated 2D.
Makes sense.
> Something tells me that getting that spice/qxl gunk will be more than a
> trivial effort (but I might be wrong) and I'm reluctant to start
> committing effort on it since so far I yet have to see it being actually
> picked up by people.
For a decent paravirt gfx card (supporting more than just basic X11 &
fbcon with scroll-bitblit) going qxl makes more sense. Oh, and most of
the endian issues in the spice code base are *not* in hw/qxl*.[ch], but
in the spice-server library and spice client code. So plumbing in
spice-over-virtio into stdvga doesn't buy you much ...
cheers,
Gerd
- Re: [Qemu-devel] Cirrus bugs vs endian: how two bugs cancel each other out, (continued)
- Re: [Qemu-devel] Cirrus bugs vs endian: how two bugs cancel each other out, Anthony Liguori, 2012/08/03
- Re: [Qemu-devel] Cirrus bugs vs endian: how two bugs cancel each other out, Alon Levy, 2012/08/07
- Re: [Qemu-devel] Cirrus bugs vs endian: how two bugs cancel each other out, Gerd Hoffmann, 2012/08/07
- Re: [Qemu-devel] Cirrus bugs vs endian: how two bugs cancel each other out, Erlon Cruz, 2012/08/07
- Re: [Qemu-devel] Cirrus bugs vs endian: how two bugs cancel each other out, Gerd Hoffmann, 2012/08/07
- Re: [Qemu-devel] Cirrus bugs vs endian: how two bugs cancel each other out, Erlon Cruz, 2012/08/07
- Re: [Qemu-devel] Cirrus bugs vs endian: how two bugs cancel each other out, Gerd Hoffmann, 2012/08/08
- Re: [Qemu-devel] Cirrus bugs vs endian: how two bugs cancel each other out, Erlon Cruz, 2012/08/08
- Re: [Qemu-devel] Cirrus bugs vs endian: how two bugs cancel each other out, Gerd Hoffmann, 2012/08/09
Re: [Qemu-devel] Cirrus bugs vs endian: how two bugs cancel each other out, Andreas Färber, 2012/08/01
Re: [Qemu-devel] Cirrus bugs vs endian: how two bugs cancel each other out,
Gerd Hoffmann <=
Re: [Qemu-devel] Cirrus bugs vs endian: how two bugs cancel each other out, Gerd Hoffmann, 2012/08/06
Re: [Qemu-devel] Cirrus bugs vs endian: how two bugs cancel each other out, Gerd Hoffmann, 2012/08/06
Re: [Qemu-devel] Cirrus bugs vs endian: how two bugs cancel each other out, Gerd Hoffmann, 2012/08/06