RE: [Xen-devel] Re: Reproducable data corruption on xen-unstable

[Robin Green <greenrd@xxxxxxxxxxxxx>]

On Sat, 5 Feb 2005, Ian Pratt wrote:
> What happens if you run two copies of fptest in parallel on the text
> console?
They work perfectly.

> Your
> problem seems to be quite specific to also having the framebuffer
> active.
If by "framebuffer" you mean "kernel fb driver", it doesn't use that.
The X server just talks to the graphics card directly.

> What kernel modules is your X server using?
As far as I know, it isn't using any. I've specifically deselected agp
at kernel compile time.

My suspicion is that there is some unusual code path where the FP 
save/restore doesn't work, and the fact of konsole doing large amounts
of text rendering (which, I believe, involves FP calculations) and/or
scrolling, makes this code path more likely. (The window that is rendering
doesn't have to be the tty of fptest. Any konsole window that's displaying 
a large amount of scrolling text is enough to trigger it.)
--
Robin


-------------------------------------------------------
This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting
Tool for open source databases. Create drag-&-drop reports. Save time
by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc.
Download a FREE copy at http://www.intelliview.com/go/osdn_nl
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.sourceforge.net/lists/listinfo/xen-devel