[Bug 84627] New: (bisected) 32bit corruption with PIPE_USAGE_STREAM reverted

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84627

            Bug ID: 84627
           Summary: (bisected) 32bit corruption with PIPE_USAGE_STREAM
                    reverted
           Product: Mesa
           Version: git
          Hardware: x86 (IA32)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: smoki00790 at gmail.com

As Michel asks me here
https://bugs.freedesktop.org/show_bug.cgi?id=82050#add_comment

> (In reply to comment #65)
> Keep in mind that revert broke 32bit complitely, lot of corruption :)

>I haven't been able to reproduce that. If you still can, please file a bug for >it, as there's nothing preventing the kernel from using GTT instead of VRAM when >the latter is full.

 So i can reproduce it today too on 32bit (64bit is not affected, at least not
by corruption) drm-next-3.18 kernel, 3.17.rc7, current mesa git and reverted
this:

 http://lists.freedesktop.org/archives/mesa-dev/2014-August/066746.html

 For the mesa part, i already bisected that it starts at (might be same reason
as bug 83436, but let alone that one for now):


http://cgit.freedesktop.org/mesa/mesa/commit/?id=07c65b85eada8dd34019763b6e82ed4257a9b4a6

 For the kernel part not bisected yet, but it is somewhere in between 3.16 and
3.17-rc1, so hopefully i will bisect that maybe today :)

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