Re: [Xen-devel] [PATCH] Provide support for multiple frame buffers in Xen

[Ben Guthro <ben@xxxxxxxxxx>]

On Thu, Nov 15, 2012 at 10:38 AM, Fabio Fantoni <fantonifabio@xxxxxxxxxx> wrote:

Support is provided for both shadow and hardware assisted paging (HAP) modes.
This code bookkeeps the set of video frame buffers (vram),
detects when the guest has modified any of those buffers and, upon request,
returns a bitmap of the modified pages.
This lets other software components re-paint the portions of the monitor (or
monitors) that have changed.
Each monitor has a frame buffer of some size at some position in guest physical
memory.
The set of frame buffers being tracked can change over time as monitors are
plugged and unplugged.
(Version 3 of this patch.)

Is this patch intended for manage multiple indipendent graphic cards on xen domU?
If yes is also intended for both pv and hvm domU?

No, it is intended to track multiple vram regions, for multiple monitors.

See the original thread, where Robert includes a PDF describing some background for this patch.

http://markmail.org/message/edw5g5ihhfmcwxov

 

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