From: Arjan van de Ven <arjan@linux.intel.com>
To: Thomas Schlichter <thomas.schlichter@web.de>
Cc: linux-kernel@vger.kernel.org, Thomas Hellstrom <thellstrom@vmware.com>
Subject: Re: [RFC Patch] use MTRR for write combining if PAT is not available
Date: Sat, 10 Oct 2009 08:45:03 -0700 [thread overview]
Message-ID: <4AD0ABFF.1020209@linux.intel.com> (raw)
In-Reply-To: <200910101031.15620.thomas.schlichter@web.de>
Thomas Schlichter wrote:
> Hmm, my CPU (VIA Nano) seems to support PAT, but Ubuntu disables this
> feature in its kernel config. I'm using 9.04, but even 9.10 will have PAT
> disabled:
that sounds like a bad idea. But to each distro their own I suppose.
>
> http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-
> karmic.git;a=blob;f=debian.master/config/config.common.ubuntu;h=a43cbabd02bfdf5412de6fea232db86aa5d3e742;hb=HEAD
> So, convincing Ubuntu to enable PAT would be a workaround, but I think
> the problem would still exist and should be fixed.
I think it's time to get rid of CONFIG_PAT at all.. and just have it be there.
Making 10+ year old CPU features that are essential functionality a config option...
... not a good idea to be honest.
next prev parent reply other threads:[~2009-10-10 15:46 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-10 1:22 [RFC Patch] use MTRR for write combining if PAT is not available Thomas Schlichter
2009-10-10 4:24 ` Arjan van de Ven
2009-10-10 8:31 ` Thomas Schlichter
2009-10-10 15:45 ` Arjan van de Ven [this message]
2009-10-10 17:50 ` Roland Dreier
2009-10-11 7:40 ` Ingo Molnar
2009-10-11 9:56 ` Thomas Schlichter
2009-10-11 18:51 ` Henrique de Moraes Holschuh
2009-10-11 18:54 ` Arjan van de Ven
2009-10-11 20:19 ` Henrique de Moraes Holschuh
2009-10-12 18:09 ` Robert Hancock
[not found] <200910122032.52168.thomas.schlichter@web.de>
2009-10-12 19:16 ` Thomas Hellstrom
2009-10-12 19:45 ` Thomas Schlichter
[not found] ` <1255378684.2063.5.camel@gaiman.anholt.net>
2009-10-13 21:05 ` Thomas Schlichter
-- strict thread matches above, loose matches on Subject: below --
2009-10-13 7:34 Jan Beulich
2009-10-13 21:29 ` Thomas Schlichter
2009-10-14 8:13 ` Jan Beulich
2009-10-14 19:14 ` Thomas Schlichter
2009-10-15 7:48 ` Jan Beulich
2009-10-17 19:48 ` Thomas Schlichter
2009-10-19 9:16 ` Jan Beulich
2009-10-19 13:44 ` Suresh Siddha
2009-10-19 13:54 ` Ingo Molnar
2009-10-19 13:36 ` Konrad Rzeszutek Wilk
2009-10-19 14:47 Thomas Schlichter
2009-10-20 19:54 ` Thomas Schlichter
2009-10-21 11:57 ` Ingo Molnar
2009-10-19 14:59 Thomas Schlichter
2009-10-19 15:31 ` Ingo Molnar
2009-10-19 21:49 ` Suresh Siddha
2009-10-20 20:35 ` Thomas Schlichter
2009-10-20 21:59 ` Suresh Siddha
2009-10-21 11:52 ` Ingo Molnar
2009-10-19 15:07 Thomas Schlichter
2009-10-19 15:10 Thomas Schlichter
2009-10-19 15:28 ` Ingo Molnar
2009-10-21 13:45 Thomas Schlichter
2009-10-21 14:11 ` Jan Beulich
2009-10-21 17:35 ` Ingo Molnar
2009-10-21 20:01 ` Thomas Schlichter
2009-10-22 9:53 ` Suresh Siddha
2009-10-22 15:34 ` Eric Anholt
2009-10-22 21:47 ` Suresh Siddha
2009-10-22 23:10 ` Jesse Barnes
2009-10-23 0:11 ` Suresh Siddha
2009-10-23 1:53 ` Eric Anholt
2009-10-23 4:31 ` Jesse Barnes
2009-10-23 4:58 ` Suresh Siddha
2009-10-23 7:24 ` Thomas Schlichter
2009-10-23 14:24 ` Suresh Siddha
2009-10-23 14:37 ` Ingo Molnar
2009-10-23 4:33 ` Suresh Siddha
2009-10-21 14:38 Thomas Schlichter
2009-10-21 15:14 ` Jan Beulich
2009-10-22 12:08 Thomas Schlichter
2009-10-22 12:14 ` H. Peter Anvin
2009-10-22 13:26 ` Suresh Siddha
2009-10-22 13:35 ` Suresh Siddha
2009-10-22 14:27 Thomas Schlichter
2009-10-22 14:41 Thomas Schlichter
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