linux-kernel - Re: [PATCH] Revert "drm/i915: Performed deferred clflush inside set-cache-level"

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Message-ID: <20150331153549.GM18595@nuc-i3427.alporthouse.com>
Date:	Tue, 31 Mar 2015 16:35:49 +0100
From:	Chris Wilson <chris@...is-wilson.co.uk>
To:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
Cc:	Daniel Vetter <daniel.vetter@...el.com>,
	Jani Nikula <jani.nikula@...ux.intel.com>,
	David Airlie <airlied@...ux.ie>,
	Ville Syrjälä 
	<ville.syrjala@...ux.intel.com>, huax.lu@...el.com,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Revert "drm/i915: Performed deferred clflush inside
 set-cache-level"

On Tue, Mar 31, 2015 at 08:40:12PM +0530, Sudip Mukherjee wrote:
> This reverts commit <0f71979ab7fbd0c71c41c2798de3d33937915434>.
> 
> my display was getting garbled for a moment very frequently. it looked
> like when the screen was getting refreshed then something was going
> wrong.
> git bisect gave this as the first bad commit, and after reverting it
> now display is not having that problem.

Hmm, I fear you would be just papering over a bug. Could you please file
a bug on bugs.freedesktop.org so that we can root cause this?
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre
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