From: Andrew Morton <akpm@linux-foundation.org>
To: smf.linux@ntlworld.com
Cc: bugzilla-daemon@bugzilla.kernel.org,
Dan Williams <dan.j.williams@intel.com>,
linux-mm@kvack.org
Subject: Re: [Bug 112211] New: ATI Radeon Graphics not rendering correctly
Date: Tue, 9 Feb 2016 12:20:15 -0800 [thread overview]
Message-ID: <20160209122015.71a63bd2d7ee34599fb79e9e@linux-foundation.org> (raw)
In-Reply-To: <bug-112211-27@https.bugzilla.kernel.org/>
(switched to email. Please respond via emailed reply-to-all, not via the
bugzilla web interface).
On Tue, 09 Feb 2016 08:41:39 +0000 bugzilla-daemon@bugzilla.kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=112211
>
> Bug ID: 112211
> Summary: ATI Radeon Graphics not rendering correctly
> Product: Memory Management
> Version: 2.5
> Kernel Version: Linux 4.5-rc3
> Hardware: IA-32
> OS: Linux
> Tree: Mainline
> Status: NEW
> Severity: normal
> Priority: P1
> Component: Page Allocator
> Assignee: akpm@linux-foundation.org
> Reporter: smf.linux@ntlworld.com
> Regression: No
>
> On testing linux 4.5-rc( 1,2 and 3) I have found that my display is not
> rendered correctly on starting the X server. My screen is mainly black with
> portions of the desktop appearing from time to time. I initially raised this
> with the DRM/Radeon team:
>
> https://bugs.freedesktop.org/show_bug.cgi?id=93998
>
> On investigation a bisect identified the following commit as the source of my
> problem:
>
> 01c8f1c44b83a0825b573e7c723b033cece37b86 is the first bad commit
> commit 01c8f1c44b83a0825b573e7c723b033cece37b86
> Author: Dan Williams <dan.j.williams@intel.com>
> Date: Fri Jan 15 16:56:40 2016 -0800
>
> mm, dax, gpu: convert vm_insert_mixed to pfn_t
>
> Convert the raw unsigned long 'pfn' argument to pfn_t for the purpose of
> evaluating the PFN_MAP and PFN_DEV flags. When both are set it triggers
> _PAGE_DEVMAP to be set in the resulting pte.
>
> There are no functional changes to the gpu drivers as a result of this
> conversion.
>
> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
> Cc: Dave Hansen <dave@sr71.net>
> Cc: David Airlie <airlied@linux.ie>
> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
>
> The problem is present on two AMD/ATI systems I have tried but is absent from
> my Intel based laptop. All my systems are 32 bit LFS builds.
>
> I did try to contact Dan Williams but I am not sure that my e-mail got through,
> can anyone suggest a way forward please ?
>
Does your kernel include
commit 03fc2da63b9a33dce784a2075c7e068bb97cbf69
Author: Dan Williams <dan.j.williams@intel.com>
Date: Tue Jan 26 09:48:05 2016 -0800
mm: fix pfn_t to page conversion in vm_insert_mixed
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next parent reply other threads:[~2016-02-09 20:20 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bug-112211-27@https.bugzilla.kernel.org/>
2016-02-09 20:20 ` Andrew Morton [this message]
2016-02-09 20:36 ` [Bug 112211] New: ATI Radeon Graphics not rendering correctly Dan Williams
2016-02-11 2:21 ` Dan Williams
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