linux-kernel - Re: [PATCH v3 6/9] radeon: Switch to arch_phys_wc_add and add a missing ...

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 15 May 2013 11:22:20 -0700
From:	Andy Lutomirski <luto@...capital.net>
To:	Jerome Glisse <j.glisse@...il.com>
Cc:	Alex Deucher <alexdeucher@...il.com>, linux-kernel@...r.kernel.org,
	dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	Dave Airlie <airlied@...il.com>
Subject: Re: [PATCH v3 6/9] radeon: Switch to arch_phys_wc_add and add a
 missing ..._del

On Wed, May 15, 2013 at 7:49 AM, Jerome Glisse <j.glisse@...il.com> wrote:
> On Tue, May 14, 2013 at 5:35 PM, Andy Lutomirski <luto@...capital.net> wrote:
>> On Tue, May 14, 2013 at 6:37 AM, Jerome Glisse <j.glisse@...il.com> wrote:
>>> On Tue, May 14, 2013 at 8:58 AM, Alex Deucher <alexdeucher@...il.com> wrote:
>>>> On Mon, May 13, 2013 at 7:58 PM, Andy Lutomirski <luto@...capital.net> wrote:
>>>>> Reviewed-by: Daniel Vetter <daniel.vetter@...ll.ch>
>>>>> Signed-off-by: Andy Lutomirski <luto@...capital.net>
>>>>
>>>> Reviewed-by: Alex Deucher <alexander.deucher@....com>
>>>
>>> I believe it will break something but we could deal with the fallout
>>> once it happens.
>>
>> FWIW, I'm running with this code on my machine right now using the
>> radeon driver.  Everything seems fine.  If I build without MTRRs and
>> without PAT, though, graphics are slow (as expected).  So I think
>> everything's okay.
>>
>> --Andy
>
> I am worried on p4 where i last see issue with that notably with agp.

Do you remember any details?  It looks like PAT is enabled on Pentium
4 (i.e. famliy 0xF).

--Andy
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/