Kernel Bug Tracker – Bug 12608
2.6.29-rc powerpc G5 Xorg legacy_mem regression
Last modified: 2009-02-14 14:28:36 UTC
Subject : 2.6.29-rc powerpc G5 Xorg legacy_mem regression
Submitter : Hugh Dickins <email@example.com>
Date : 2009-01-21 21:12
References : http://marc.info/?l=linux-kernel&m=123257250431870&w=4
Handled-By : Benjamin Herrenschmidt <firstname.lastname@example.org>
This entry is being used for tracking a regression from 2.6.28. Please don't
close it until the problem is fixed in the mainline.
Author: Benjamin Herrenschmidt <email@example.com>
Date: Wed Nov 12 14:38:53 2008 +1100
PCI: Add legacy_io/mem to all busses
Signed-off-by: Benjamin Herrenschmidt <firstname.lastname@example.org>
Signed-off-by: Jesse Barnes <email@example.com>
First-Bad-Commit : d3a54014e2a94bd37b7dee5e76e03f7bc4fab49a
On Thursday 05 February 2009, Benjamin Herrenschmidt wrote:
> On Wed, 2009-02-04 at 11:24 +0100, Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> > The following bug entry is on the current list of known regressions
> > from 2.6.28. Please verify if it still should be listed and let me know
> > (either way).
> I still don't know what's the best way to handle that one... the bug is
> in X and I don't see a way to work around it without removing support
> for legacy memory access from the kernel :-( Or doing it in a way that
> doesn't allow userspace to differenciate between the kernel not
> supporting it vs. the HW not supporting it, causing X to fallback to
> even more broken crap.
> I'll try to find out the extent of the X problem and whether that's
> fixable in a way that can hit distros.
Fixed by: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5b11abfdb572bf9284e596dd198ac2aaf95b6616