[bisect result] Re: 3.15-rc2: i915 regression: only top 20% of screen works in X

[Pavel Machek]

Hi!

> And if you can indeed reliably reproduce this a bisect could be really useful.

And we have a winner here :-)

Ok, it was not as painfull as I feared.

It does not revert cleanly, but doing it by hand was not that bad.

Best regards,
   	    	   	    	      	    	     	 Pavel

a51435a3137ad8ae75c288c39bd2d8b2696bae8f is the first bad commit
commit a51435a3137ad8ae75c288c39bd2d8b2696bae8f
Author: Naresh Kumar Kachhi <naresh.kumar.kachhi@xxxxxxxxx>
Date:   Wed Mar 12 16:39:40 2014 +0530

    drm/i915: disable rings before HW status page setup
    
    Rings should be idle before issuing sync_flush
    (in intel_ring_setup_status_page). This patch moves the ring
    disabling before doing the HW status page setup.
    
    Signed-off-by: Naresh Kumar Kachhi <naresh.kumar.kachhi@xxxxxxxxx>
    Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
    Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx>

:040000 040000 23f2763fe684882008ca395f38d0da1cf197a85e
f1052c959b35a99ceae9886603086c09edee5df8 M	drivers
pavel@amd:/data/l/linux-good$ 


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(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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