From: Linus Torvalds <torvalds@linux-foundation.org>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Rene Herman <rene.herman@keyaccess.nl>,
Thomas Gleixner <tglx@linutronix.de>,
Adrian Bunk <bunk@kernel.org>, Yinghai Lu <yhlu.kernel@gmail.com>,
Ingo Molnar <mingo@elte.hu>,
Linux Kernel <linux-kernel@vger.kernel.org>,
akpm@linux-foundation.org, Pavel Machek <pavel@suse.cz>
Subject: Re: [PATCH] x86: introduce a new Linux defined feature flag for PAT support
Date: Wed, 7 May 2008 19:24:35 -0700 (PDT) [thread overview]
Message-ID: <alpine.LFD.1.10.0805071923030.3024@woody.linux-foundation.org> (raw)
In-Reply-To: <4822614B.6080706@zytor.com>
On Wed, 7 May 2008, H. Peter Anvin wrote:
>
> Indeed it wasn't, and at least I have no interest of maintaining what is in
> effect an in-kernel version of x86info(1).
Umm. We already do, since we effectively ignore what the actual hardware
says, and replace it with our own version.
> *Certainly* I don't want anything like this crap:
>
> > - if (cpu_has_pat)
> > + if (cpu_has_pat && cpu_has_pat_good)
This in fact is likely the best part of it.
Because that at least guarantees that we never say we have a good PAT when
the hardware doesn't even report it.
As it is, we seem to just blindly override hardware. It may be correct for
all the models we override, but still..
Linus
next prev parent reply other threads:[~2008-05-08 2:25 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-07 1:48 2.6.26, PAT and AMD family 6 Rene Herman
2008-05-07 2:39 ` Yinghai Lu
2008-05-07 12:46 ` Undocumented and duplicated code Adrian Bunk
2008-05-07 13:14 ` Rene Herman
2008-05-07 20:52 ` 2.6.26, PAT and AMD family 6 Thomas Gleixner
2008-05-07 20:59 ` Pavel Machek
2008-05-07 21:10 ` Rene Herman
2008-05-07 21:41 ` Thomas Gleixner
2008-05-07 21:46 ` Adrian Bunk
2008-05-07 22:08 ` Thomas Gleixner
2008-05-07 22:29 ` Pavel Machek
2008-05-07 22:04 ` Rene Herman
2008-05-07 22:23 ` Rene Herman
2008-05-07 22:31 ` Yinghai Lu
2008-05-07 22:57 ` H. Peter Anvin
2008-05-08 0:02 ` Rene Herman
2008-05-08 0:03 ` H. Peter Anvin
2008-05-08 0:10 ` Rene Herman
2008-05-08 0:19 ` Linus Torvalds
2008-05-08 0:28 ` Rene Herman
2008-05-08 1:57 ` [PATCH] x86: introduce a new Linux defined feature flag for PAT support Rene Herman
2008-05-08 1:58 ` Linus Torvalds
2008-05-08 2:11 ` H. Peter Anvin
2008-05-08 2:17 ` Rene Herman
2008-05-08 2:24 ` Linus Torvalds [this message]
2008-05-08 2:28 ` H. Peter Anvin
2008-05-08 12:49 ` Thomas Gleixner
2008-05-08 13:08 ` Ingo Molnar
2008-05-08 16:44 ` H. Peter Anvin
2008-05-08 13:11 ` Adrian Bunk
2008-05-08 13:33 ` Thomas Gleixner
2008-05-08 14:44 ` Rene Herman
2008-05-08 14:53 ` Thomas Gleixner
2008-05-08 16:48 ` H. Peter Anvin
2008-05-08 16:53 ` Rene Herman
2008-05-08 2:04 ` [PATCH] x86: enable PAT support on AMD Duron model 7 Rene Herman
2008-05-08 2:08 ` Arjan van de Ven
2008-05-08 2:12 ` Rene Herman
2008-05-08 10:19 ` [PATCH] x86: introduce a new Linux defined feature flag for PAT support Andi Kleen
2008-05-08 12:40 ` Rene Herman
2008-05-08 13:39 ` Andi Kleen
2008-05-08 15:32 ` Alan Cox
2008-05-08 16:51 ` H. Peter Anvin
2008-05-08 0:21 ` 2.6.26, PAT and AMD family 6 Thomas Gleixner
2008-05-08 0:30 ` Rene Herman
2008-05-08 0:15 ` Linus Torvalds
2008-05-08 0:31 ` H. Peter Anvin
2008-05-08 10:14 ` Andi Kleen
2008-05-08 16:43 ` H. Peter Anvin
2008-05-07 21:23 ` Adrian Bunk
2008-05-07 21:54 ` Thomas Gleixner
2008-05-07 22:09 ` Adrian Bunk
2008-05-07 22:14 ` Pavel Machek
2008-05-07 22:22 ` Yinghai Lu
2008-05-07 22:37 ` Pavel Machek
2008-05-07 22:40 ` Yinghai Lu
2008-05-07 23:02 ` Pavel Machek
2008-05-07 23:02 ` Thomas Gleixner
2008-05-07 23:10 ` Pavel Machek
2008-05-07 23:46 ` Thomas Gleixner
2008-05-07 22:23 ` Yinghai Lu
2008-05-07 22:39 ` Pavel Machek
2008-05-07 22:45 ` Yinghai Lu
2008-05-07 23:06 ` Pavel Machek
2008-05-07 23:01 ` H. Peter Anvin
2008-05-07 22:26 ` Yinghai Lu
2008-05-07 22:30 ` Rene Herman
2008-05-07 22:58 ` Thomas Gleixner
2008-05-07 13:00 ` Rene Herman
2008-05-07 13:42 ` Arjan van de Ven
2008-05-07 14:09 ` Rene Herman
2008-05-07 14:24 ` Arjan van de Ven
2008-05-07 19:08 ` Rene Herman
2008-05-07 22:17 ` Arjan van de Ven
2008-05-07 19:39 ` Daniel Hazelton
2008-05-07 20:06 ` Rene Herman
2008-05-07 20:16 ` Yinghai Lu
2008-05-07 20:18 ` Yinghai Lu
2008-05-08 4:06 ` H. Peter Anvin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=alpine.LFD.1.10.0805071923030.3024@woody.linux-foundation.org \
--to=torvalds@linux-foundation.org \
--cc=akpm@linux-foundation.org \
--cc=bunk@kernel.org \
--cc=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=pavel@suse.cz \
--cc=rene.herman@keyaccess.nl \
--cc=tglx@linutronix.de \
--cc=yhlu.kernel@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®