Bug 57031

Summary: [ivb GT2] [SNA] __kgem_bo_map__gtt: failed to retrieve GTT offset for handle[...]
Product: xorg Reporter: Michael Laß <bevan>
Component: Driver/intelAssignee: Chris Wilson <chris>
Status: RESOLVED FIXED QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium    
Version: git   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
Full Xorg.0.log (gziped) none

Description Michael Laß 2012-11-12 19:45:27 UTC 
Created attachment 69959 [details]
Full Xorg.0.log (gziped)

This bug is a follow up to #54808.

I'm still using Fedora 17 on a notebook with an ivb GT2 and I'm still using that old cairo version 1.10.2 (sorry). Again it is not possible to view the large NASA picture (http://marsrovers.jpl.nasa.gov/gallery/press/opportunity/20120705a/PIA15689_Greeley_Pan_wDeck_L257F.jpg) using eog, but now I'm getting a new error message in Xorg.0.log:

__kgem_bo_map__gtt: failed to retrieve GTT offset for handle=54: 7

The handle number differs from time to time. The full Xorg.0.log is attached.

I tested ver. 2.20.10 of the driver and the latest version from git (66eb0adff...) and got the same result.

Viewing the picture worked perfectly after bug #54808 was fixed. I'm not sure what update since then led to the problem. I got a new kernel (3.6.6 instead of 3.5.3) but I can reproduce the issue with kernel 3.3.4 (unfortunately I don't have 3.5.3 anymore), so it's unlikely that kernel 3.6 causes the trouble.

I'd be glad to help tracking down the problem but if the old cairo version causes the trouble and you say it's no longer supported, that's also fine for me.
Comment 1 Chris Wilson 2012-11-13 09:25:09 UTC 
Hmm, no it is just the most convenient means to trigger a bug in the ddx. Ok, can reproduce with cairo-1.10 as well...
Comment 2 Chris Wilson 2012-11-13 09:49:42 UTC 
commit 2954f15e2bcb590a90c2cb6077c0843ee25a4413
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Tue Nov 13 09:46:19 2012 +0000

    sna: Specialise the decision for inplace xor uploads
    
    Fixes a regression from
    
    commit 0be1d964713ca407f029278a8256d02d925dc9da
    Author: Chris Wilson <chris@chris-wilson.co.uk>
    Date:   Tue Sep 11 21:48:24 2012 +0100
    
        sna: Use inplace X tiling for LLC uploads
    
    which introduced the ability to swizzle into CPU maps, but also
    convinced the xorg path to the same - which for large images blows up.
    
    Reported-by: Michael Laß <bevan@bi-co.net>
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=57031
    Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

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