David Miller writes:
> From: Mikael Pettersson <email@example.com>
> Date: Tue, 3 Jun 2008 09:35:52 +0200
> > Fatal server error:
> > xf86MapPciMem: Could not mmap PCI memory [base=0xe2000000,hostbase=0xe2000000,size=2000] (No such file or directory)
> > I'll start digging through 2.6.25->2.6.26-rc1 later today,
> > meanwhile I've put Xorg.0.log, Xorg strace, dmesg, and .config
> > files for 2.6.25 (working) and 2.6.26-rc4 (failing) in
> > <http://user.it.uu.se/~mikpe/linux/sparc64-2.6.26-rcN-xorg-bug/>.
> It's likely this change below. Unfortunately older versions of X
> seemingly cannot cope with a lack of PCI host controller in the PCI
> hierarchy exported by the kernel.
> That's really a bug in X, current libpciaccess based X servers work
> fine, and the bug fixed by this changeset is not solvable in any other
> reasonable way. So unfortunately older X verions will stay not
> working. Sorry.
> commit c26d3c0138970778fabe114df99dffb34a04b1d7
> Author: David S. Miller <firstname.lastname@example.org>
> Date: Thu May 1 01:12:40 2008 -0700
Confirmed. Reverting this patch from 2.6.26-rc1 made my Xorg-7.1.1 work again.
It's a shame though that a bug fix needs to have such draconian consequences.