Re: "BUG: Bad page map in process Xorg" with 3.1 kernel

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On Wed, Dec 21, 2011 at 04:42:54PM -0500, David Miller wrote:
> From: Jurij Smakov <jurij@xxxxxxxxx>
> Date: Wed, 21 Dec 2011 21:34:29 +0000
> 
> > On Wed, Dec 21, 2011 at 03:58:38PM -0500, David Miller wrote:
> >> From: Jurij Smakov <jurij@xxxxxxxxx>
> >> Date: Tue, 20 Dec 2011 23:00:40 +0000
> >> 
> >> > Today I've tried running Xorg on my SunBlade 1000 with a rather old 
> >> > ATI Mach64 graphics card. When I launch Xorg, messages like these get 
> >> > logged a few times:
> >> 
> >> Can you see if reverting this fixes things?
> >> 
> >> --------------------
> >> commit 3e37fd3153ac95088a74f5e7c569f7567e9f993a
> >> Author: David S. Miller <davem@xxxxxxxxxxxxx>
> >> Date:   Thu Nov 17 18:17:59 2011 -0800
> >> 
> >>     sparc: Kill custom io_remap_pfn_range().
> >>     
> >>     To handle the large physical addresses, just make a simple wrapper
> >>     around remap_pfn_range() like MIPS does.
> >>     
> >>     Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
> > 
> > It does not look like this change made it into 3.1 (where I see these 
> > errors).
> 
> Interesting.... try applying it! :-)
> 
> The bug log message is essentially complaining that pte_special() is
> not true and the PFN is for an area outside of the physical memory
> range.
> 
> The patch I mentioned uses generic code instead of the by-hand sparc
> stuff, and is likely to fix that kind of problem.
> 
> So give it a try and let me know how it goes.

Yeah, with this patch applied the messages are no longer there. X 
still does not work though, but that can be for a variety of 
reasons...

Best regards,
-- 
Jurij Smakov                                           jurij@xxxxxxxxx
Key: http://www.wooyd.org/pgpkey/                      KeyID: C99E03CC
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