Re: Regression: bisected: commit 7c510133d93 breaks video

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On Thu, Sep 19, 2013 at 06:32:47PM +0000, Paul Zimmerman wrote:
> > From: Paul Zimmerman
> > Sent: Thursday, September 19, 2013 11:21 AM
> > 
> > > From: Dave Airlie [mailto:airlied@xxxxxxxxx]
> > > Sent: Wednesday, September 18, 2013 7:40 PM
> > >
> > > On Thu, Sep 19, 2013 at 12:02 PM, Paul Zimmerman
> > > <Paul.Zimmerman@xxxxxxxxxxxx> wrote:
> > > > I have an ASUS P6X58D-Premium mobo with a GeForce 9400GT PCIe video card.
> > > > With kernel 3.12-rc1, I get scrambled video on boot. Kernel 3.11 works
> > > > fine.
> > > >
> > > > Bisecting this, I found 7c510133d93dd6f15ca040733ba7b2891ed61fd1 "drm:
> > > > mark context support as a legacy subsystem" is the guilty commit. If I
> > > > revert that commit, the video works fine.
> > > >
> > > > Is there any more info I can provide?
> > >
> > > Full dmesg, and what driver you are using.
> > 
> > Driver is nouveau.
> > 
> > The dmesg from a good boot with the commit reverted is attached.
> > 
> > For the bad boot, the dmesg log is filled with messages like this:
> > 
> > [   15.871667] nouveau E[     PFB][0000:03:00.0] trapped write at 0x01010010a0 on channel 0x0001fed0
> > [unknown] BAR/PFIFO_WRITE/IN reason: PAGE_NOT_PRESENT
> > [   15.871698] nouveau E[     PFB][0000:03:00.0] trapped write at 0x010100b2e0 on channel 0x0001fed0
> > [unknown] BAR/PFIFO_WRITE/IN reason: PAGE_NOT_PRESENT
> > [   15.871781] nouveau E[     PFB][0000:03:00.0] trapped write at 0x0101011600 on channel 0x0001fed0
> > [unknown] BAR/PFIFO_WRITE/IN reason: PAGE_NOT_PRESENT
> > 
> > I will try next with the patch series you sent to Linus yesterday, to
> > see if that happens to fix this.
> 
> Nope, with your patch series from yesterday the problem still exists.

Just to double-check: Does the revert still work, even on latest upstream
git + Dave's pull request?
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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