Nouveau - Feb 2012 - [Bug 45746] New: ION (NVAC) does not work with latest git kernel module

https://bugs.freedesktop.org/show_bug.cgi?id=45746

             Bug #: 45746
           Summary: ION (NVAC) does not work with latest git kernel module
    Classification: Unclassified
           Product: xorg
           Version: git
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: johannesobermayr at gmx.de
         QAContact: xorg-team at lists.x.org


Created attachment 56714
  --> https://bugs.freedesktop.org/attachment.cgi?id=56714
dmesg

Screen freezes when loading nouveau.ko module.

drm-next tree built against kernel 3.1.9 works.

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https://bugs.freedesktop.org/show_bug.cgi?id=45746

Johannes Obermayr <johannesobermayr at gmx.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|ION (NVAC) does not work    |[bisected] ION (NVAC) does
                   |with latest git kernel      |not work with latest git
                   |module                      |kernel module

--- Comment #1 from Johannes Obermayr <johannesobermayr at gmx.de>
2012-02-26 13:52:23 UTC ---
Offender:

author    Ben Skeggs <bskeggs at redhat.com>    2012-01-12 05:34:54 (GMT)
committer     Ben Skeggs <bskeggs at redhat.com>    2012-02-01 05:28:40
(GMT)
commit    5103952cf50e424963ba6f492d0b479b41469498

    drm/nv50-nvc0/vm: support unsnooped system memory

http://cgit.freedesktop.org/nouveau/linux-2.6/commit/?id=5103952cf50e424963ba6f492d0b479b41469498

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https://bugs.freedesktop.org/show_bug.cgi?id=45746

--- Comment #2 from Emil Velikov <emil.l.velikov at gmail.com> 2012-02-26
14:32:35 PST ---
Created attachment 57684
  --> https://bugs.freedesktop.org/attachment.cgi?id=57684
Patch

Can you try the attached patch

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https://bugs.freedesktop.org/show_bug.cgi?id=45746

--- Comment #3 from Johannes Obermayr <johannesobermayr at gmx.de>
2012-02-26 15:06:02 PST ---
Created attachment 57685
  --> https://bugs.freedesktop.org/attachment.cgi?id=57685
Latest git master with applied patch

The patch fixes the issue.

Please set the bug to RESOLVED/FIXED after push and apply commit SHA.
(For transparency ...)

Thanks a lot.

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Emil Velikov <emil.l.velikov at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED

--- Comment #4 from Emil Velikov <emil.l.velikov at gmail.com> 2012-03-01
11:45:13 PST ---

commit 08d6d2ba4229a381d9f679e72aaaa0e8e4da87ce
Author: Emil Velikov <emil.l.velikov at gmail.com>
Date:   Mon Feb 27 21:01:41 2012 +0000

    drm/nv50/vm: fix retargeting of igp vram

    Commit 'drm/nv50-nvc0/vm: support unsnooped system memory' caused
    a regression on certain nv50 IGP due to not passing the correct
    target type to nv50_vm_addr()

    Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=45746
    Reported-by: Johannes Obermayr <johannesobermayr at gmx.de>
    Tested-by: Johannes Obermayr <johannesobermayr at gmx.de>
    Signed-off-by: Emil Velikov <emil.l.velikov at gmail.com>
    Signed-off-by: Ben Skeggs <bskeggs at redhat.com>

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