From: Matt Mackall <mpm@selenic.com>
To: Dave Hansen <dave@linux.vnet.ibm.com>
Cc: Hans Rosenfeld <hans.rosenfeld@amd.com>,
Hugh Dickins <hugh@veritas.com>,
Nishanth Aravamudan <nacc@us.ibm.com>,
Ingo Molnar <mingo@elte.hu>,
Jeff Chua <jeff.chua.linux@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Gabriel C <nix.or.die@googlemail.com>,
Arjan van de Ven <arjan@linux.intel.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH] x86: fix PAE pmd_bad bootup warning
Date: Wed, 14 May 2008 14:01:41 -0500 [thread overview]
Message-ID: <1210791701.4093.29.camel@calx> (raw)
In-Reply-To: <1210288532.7905.89.camel@nimitz.home.sr71.net>
On Thu, 2008-05-08 at 16:15 -0700, Dave Hansen wrote:
> Here's one quick stab at a solution. I figured that we already pass
> that 'private' variable around. This patch just sticks that variable
> *in* the mm_walk and also makes the caller fill in an 'mm' as well.
> Then, we just pass the actual mm_walk around.
>
> Maybe we should just stick the VMA in the mm_walk as well, and have the
> common code keep it up to date with the addresses currently being
> walked.
>
> Sadly, I didn't quite get enough time to flesh this idea out very far
> today, and I'll be offline for a couple of days now. But, if someone
> wants to go this route, I thought this might be useful.
This much looks reasonable. But the real test of course is to actually
teach it about detecting huge pages efficiently. And I suspect that
means tracking the current VMA all the time in the walk. Am I wrong?
--
Mathematics is the supreme nostalgia of our time.
WARNING: multiple messages have this Message-ID (diff)
From: Matt Mackall <mpm@selenic.com>
To: Dave Hansen <dave@linux.vnet.ibm.com>
Cc: Hans Rosenfeld <hans.rosenfeld@amd.com>,
Hugh Dickins <hugh@veritas.com>,
Nishanth Aravamudan <nacc@us.ibm.com>,
Ingo Molnar <mingo@elte.hu>,
Jeff Chua <jeff.chua.linux@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Gabriel C <nix.or.die@googlemail.com>,
Arjan van de Ven <arjan@linux.intel.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH] x86: fix PAE pmd_bad bootup warning
Date: Wed, 14 May 2008 14:01:41 -0500 [thread overview]
Message-ID: <1210791701.4093.29.camel@calx> (raw)
In-Reply-To: <1210288532.7905.89.camel@nimitz.home.sr71.net>
On Thu, 2008-05-08 at 16:15 -0700, Dave Hansen wrote:
> Here's one quick stab at a solution. I figured that we already pass
> that 'private' variable around. This patch just sticks that variable
> *in* the mm_walk and also makes the caller fill in an 'mm' as well.
> Then, we just pass the actual mm_walk around.
>
> Maybe we should just stick the VMA in the mm_walk as well, and have the
> common code keep it up to date with the addresses currently being
> walked.
>
> Sadly, I didn't quite get enough time to flesh this idea out very far
> today, and I'll be offline for a couple of days now. But, if someone
> wants to go this route, I thought this might be useful.
This much looks reasonable. But the real test of course is to actually
teach it about detecting huge pages efficiently. And I suspect that
means tracking the current VMA all the time in the walk. Am I wrong?
--
Mathematics is the supreme nostalgia of our time.
--
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next prev parent reply other threads:[~2008-05-14 19:02 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-06 1:06 Linux 2.6.26-rc1 - pgtable_32.c:178 pmd_bad Jeff Chua
2008-05-06 12:49 ` Ingo Molnar
2008-05-06 13:56 ` Hugh Dickins
2008-05-06 15:04 ` Ingo Molnar
2008-05-06 15:09 ` Linus Torvalds
2008-05-06 15:15 ` Ingo Molnar
2008-05-06 16:16 ` Linus Torvalds
2008-05-06 16:30 ` Ingo Molnar
2008-05-06 15:32 ` Jeremy Fitzhardinge
2008-05-06 16:12 ` Hugh Dickins
2008-05-06 18:39 ` Linus Torvalds
2008-05-06 19:43 ` Hugh Dickins
2008-05-06 19:49 ` [PATCH] x86: fix PAE pmd_bad bootup warning Hugh Dickins
2008-05-06 19:49 ` Hugh Dickins
2008-05-06 20:06 ` Linus Torvalds
2008-05-06 20:06 ` Linus Torvalds
2008-05-06 20:30 ` Hugh Dickins
2008-05-06 20:30 ` Hugh Dickins
2008-05-08 16:07 ` Nishanth Aravamudan
2008-05-08 16:07 ` Nishanth Aravamudan
2008-05-06 20:22 ` Hans Rosenfeld
2008-05-06 20:22 ` Hans Rosenfeld
2008-05-06 20:36 ` Hugh Dickins
2008-05-06 20:36 ` Hugh Dickins
2008-05-07 23:39 ` Nishanth Aravamudan
2008-05-07 23:39 ` Nishanth Aravamudan
2008-05-06 20:42 ` Dave Hansen
2008-05-06 20:42 ` Dave Hansen
2008-05-08 14:34 ` Hans Rosenfeld
2008-05-08 14:34 ` Hans Rosenfeld
2008-05-08 14:39 ` Hans Rosenfeld
2008-05-08 14:52 ` Dave Hansen
2008-05-08 14:52 ` Dave Hansen
2008-05-08 15:11 ` Hans Rosenfeld
2008-05-08 15:11 ` Hans Rosenfeld
2008-05-08 15:51 ` Dave Hansen
2008-05-08 15:51 ` Dave Hansen
2008-05-08 16:19 ` Hans Rosenfeld
2008-05-08 16:19 ` Hans Rosenfeld
2008-05-08 16:33 ` Nishanth Aravamudan
2008-05-08 16:33 ` Nishanth Aravamudan
2008-05-08 16:51 ` Hans Rosenfeld
2008-05-08 16:51 ` Hans Rosenfeld
2008-05-08 17:16 ` Nishanth Aravamudan
2008-05-08 17:16 ` Nishanth Aravamudan
2008-05-08 18:42 ` Dave Hansen
2008-05-08 18:42 ` Dave Hansen
2008-05-08 18:58 ` Hugh Dickins
2008-05-08 18:58 ` Hugh Dickins
2008-05-08 19:06 ` Dave Hansen
2008-05-08 19:06 ` Dave Hansen
2008-05-08 18:48 ` Hugh Dickins
2008-05-08 18:48 ` Hugh Dickins
2008-05-08 19:49 ` Matt Mackall
2008-05-08 19:49 ` Matt Mackall
2008-05-08 20:08 ` Dave Hansen
2008-05-08 20:08 ` Dave Hansen
2008-05-08 20:02 ` Hans Rosenfeld
2008-05-08 20:02 ` Hans Rosenfeld
2008-05-08 20:16 ` Dave Hansen
2008-05-08 20:16 ` Dave Hansen
2008-05-08 23:15 ` Dave Hansen
2008-05-08 23:15 ` Dave Hansen
2008-05-14 19:01 ` Matt Mackall [this message]
2008-05-14 19:01 ` Matt Mackall
2008-05-09 9:03 ` Paul Mundt
2008-05-09 9:03 ` Paul Mundt
2008-05-08 16:42 ` Dave Hansen
2008-05-08 16:42 ` Dave Hansen
2008-05-08 15:44 ` Nishanth Aravamudan
2008-05-08 15:44 ` Nishanth Aravamudan
2008-05-07 4:40 ` Jeff Chua
2008-05-07 4:40 ` Jeff Chua
2008-05-07 5:30 ` Hugh Dickins
2008-05-07 5:30 ` Hugh Dickins
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