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xen-devel
Re: [Xen-devel] Re: More virtio users
On Tue, 2007-06-12 at 09:19 +1000, Rusty Russell wrote:
> > Rectangles work just fine for a framebuffer console. They stop
> working
> > once you plan to run any graphical stuff such as an X-Server on top
> of
> > the framebuffer. Only way to get notified about changes is page
> faults,
> > i.e. 4k granularity on the linear framebuffer memory.
>
> Yes, I discussed this with Ben Herrenschmidt a couple of months ago.
> It
> would be better to provide a fb ioctl which X could use to describe
> changed rectangles if available. In the virtio case we could hand
> that
> information through, and other virtualized framebuffers would be able
> to
> use it similarly.
Yes, with the X damage extension, we can have precise notification of
changed areas.
Ben.
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