From: Andi Kleen <andi@firstfloor.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Andi Kleen <andi@firstfloor.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org
Subject: Re: [PATCH] [2/16] POISON: Add page flag for poisoned pages
Date: Wed, 8 Apr 2009 08:24:41 +0200 [thread overview]
Message-ID: <20090408062441.GF17934@one.firstfloor.org> (raw)
In-Reply-To: <20090407221421.890f27a6.akpm@linux-foundation.org>
On Tue, Apr 07, 2009 at 10:14:21PM -0700, Andrew Morton wrote:
> On Tue, 7 Apr 2009 17:09:58 +0200 (CEST) Andi Kleen <andi@firstfloor.org> wrote:
>
> > Poisoned pages need special handling in the VM and shouldn't be touched
> > again. This requires a new page flag. Define it here.
>
> I wish this patchset didn't change/abuse the well-understood meaning of
> the word "poison".
Sorry, that's the terminology on the hardware side.
If there's much confusion I could rename it HwPoison or somesuch?
> > The page flags wars seem to be over, so it shouldn't be a problem
> > to get a new one. I hope.
>
> They are? How did it all get addressed?
Allowing 64bit to use more and using [V]SPARSEMAP to limit flags
use for zones. I think.
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
WARNING: multiple messages have this Message-ID (diff)
From: Andi Kleen <andi@firstfloor.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Andi Kleen <andi@firstfloor.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org
Subject: Re: [PATCH] [2/16] POISON: Add page flag for poisoned pages
Date: Wed, 8 Apr 2009 08:24:41 +0200 [thread overview]
Message-ID: <20090408062441.GF17934@one.firstfloor.org> (raw)
In-Reply-To: <20090407221421.890f27a6.akpm@linux-foundation.org>
On Tue, Apr 07, 2009 at 10:14:21PM -0700, Andrew Morton wrote:
> On Tue, 7 Apr 2009 17:09:58 +0200 (CEST) Andi Kleen <andi@firstfloor.org> wrote:
>
> > Poisoned pages need special handling in the VM and shouldn't be touched
> > again. This requires a new page flag. Define it here.
>
> I wish this patchset didn't change/abuse the well-understood meaning of
> the word "poison".
Sorry, that's the terminology on the hardware side.
If there's much confusion I could rename it HwPoison or somesuch?
> > The page flags wars seem to be over, so it shouldn't be a problem
> > to get a new one. I hope.
>
> They are? How did it all get addressed?
Allowing 64bit to use more and using [V]SPARSEMAP to limit flags
use for zones. I think.
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
--
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next prev parent reply other threads:[~2009-04-08 6:22 UTC|newest]
Thread overview: 150+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-07 15:09 [PATCH] [0/16] POISON: Intro Andi Kleen
2009-04-07 15:09 ` Andi Kleen
2009-04-07 15:09 ` [PATCH] [1/16] POISON: Add support for high priority work items Andi Kleen
2009-04-07 15:09 ` Andi Kleen
2009-04-07 15:09 ` [PATCH] [2/16] POISON: Add page flag for poisoned pages Andi Kleen
2009-04-07 15:09 ` Andi Kleen
2009-04-07 21:07 ` Christoph Lameter
2009-04-07 21:07 ` Christoph Lameter
2009-04-08 0:29 ` Russ Anderson
2009-04-08 0:29 ` Russ Anderson
2009-04-08 6:26 ` Andi Kleen
2009-04-08 6:26 ` Andi Kleen
2009-04-08 5:14 ` Andrew Morton
2009-04-08 5:14 ` Andrew Morton
2009-04-08 6:24 ` Andi Kleen [this message]
2009-04-08 6:24 ` Andi Kleen
2009-04-08 7:00 ` Andrew Morton
2009-04-08 7:00 ` Andrew Morton
2009-04-08 9:38 ` Andi Kleen
2009-04-08 9:38 ` Andi Kleen
2009-04-07 15:09 ` [PATCH] [3/16] POISON: Handle poisoned pages in page free Andi Kleen
2009-04-07 15:09 ` Andi Kleen
2009-04-07 23:21 ` Minchan Kim
2009-04-07 23:21 ` Minchan Kim
2009-04-08 6:51 ` Andi Kleen
2009-04-08 6:51 ` Andi Kleen
2009-04-08 7:39 ` Minchan Kim
2009-04-08 7:39 ` Minchan Kim
2009-04-08 9:41 ` Andi Kleen
2009-04-08 9:41 ` Andi Kleen
2009-04-08 10:05 ` Minchan Kim
2009-04-08 10:05 ` Minchan Kim
2009-04-07 15:10 ` [PATCH] [4/16] POISON: Export some rmap vma locking to outside world Andi Kleen
2009-04-07 15:10 ` Andi Kleen
2009-04-07 15:10 ` [PATCH] [5/16] POISON: Add support for poison swap entries Andi Kleen
2009-04-07 15:10 ` Andi Kleen
2009-04-07 21:11 ` Christoph Lameter
2009-04-07 21:11 ` Christoph Lameter
2009-04-07 21:56 ` Andi Kleen
2009-04-07 21:56 ` Andi Kleen
2009-04-07 21:56 ` Christoph Lameter
2009-04-07 21:56 ` Christoph Lameter
2009-04-07 22:25 ` Andi Kleen
2009-04-07 22:25 ` Andi Kleen
2009-04-07 15:10 ` [PATCH] [6/16] POISON: Add new SIGBUS error codes for poison signals Andi Kleen
2009-04-07 15:10 ` Andi Kleen
2009-04-07 15:10 ` [PATCH] [7/16] POISON: Add basic support for poisoned pages in fault handler Andi Kleen
2009-04-07 15:10 ` Andi Kleen
2009-05-26 12:55 ` Hidehiro Kawai
2009-05-26 12:55 ` Hidehiro Kawai
2009-05-26 13:18 ` Andi Kleen
2009-05-26 13:18 ` Andi Kleen
2009-04-07 15:10 ` [PATCH] [8/16] POISON: Add various poison checks in mm/memory.c Andi Kleen
2009-04-07 15:10 ` Andi Kleen
2009-04-07 19:03 ` Johannes Weiner
2009-04-07 19:03 ` Johannes Weiner
2009-04-07 19:31 ` Andi Kleen
2009-04-07 19:31 ` Andi Kleen
2009-04-07 20:17 ` Johannes Weiner
2009-04-07 20:17 ` Johannes Weiner
2009-04-07 20:24 ` Andi Kleen
2009-04-07 20:24 ` Andi Kleen
2009-04-07 20:36 ` Johannes Weiner
2009-04-07 20:36 ` Johannes Weiner
2009-04-07 15:10 ` [PATCH] [9/16] POISON: x86: Add VM_FAULT_POISON handling to x86 page fault handler Andi Kleen
2009-04-07 15:10 ` Andi Kleen
2009-04-07 15:10 ` [PATCH] [10/16] POISON: Use bitmask/action code for try_to_unmap behaviour Andi Kleen
2009-04-07 15:10 ` Andi Kleen
2009-04-07 21:19 ` Christoph Lameter
2009-04-07 21:19 ` Christoph Lameter
2009-04-07 21:59 ` Andi Kleen
2009-04-07 21:59 ` Andi Kleen
2009-04-07 22:04 ` Christoph Lameter
2009-04-07 22:04 ` Christoph Lameter
2009-04-07 22:35 ` Andi Kleen
2009-04-07 22:35 ` Andi Kleen
2009-04-07 15:10 ` [PATCH] [11/16] POISON: Handle poisoned pages in try_to_unmap Andi Kleen
2009-04-07 15:10 ` Andi Kleen
2009-04-07 15:10 ` [PATCH] [12/16] POISON: Handle poisoned pages in set_page_dirty() Andi Kleen
2009-04-07 15:10 ` Andi Kleen
2009-04-07 15:10 ` [PATCH] [13/16] POISON: The high level memory error handler in the VM Andi Kleen
2009-04-07 15:10 ` Andi Kleen
2009-04-07 16:03 ` Rik van Riel
2009-04-07 16:03 ` Rik van Riel
2009-04-07 16:30 ` Andi Kleen
2009-04-07 16:30 ` Andi Kleen
2009-04-07 18:51 ` Johannes Weiner
2009-04-07 18:51 ` Johannes Weiner
2009-04-07 19:40 ` Andi Kleen
2009-04-07 19:40 ` Andi Kleen
2009-04-08 17:03 ` Chris Mason
2009-04-08 17:03 ` Chris Mason
2009-04-09 7:29 ` Andi Kleen
2009-04-09 7:29 ` Andi Kleen
2009-04-09 7:58 ` [PATCH] [13/16] POISON: The high level memory error handler in the VM II Andi Kleen
2009-04-09 7:58 ` Andi Kleen
2009-04-09 13:30 ` Chris Mason
2009-04-09 13:30 ` Chris Mason
2009-04-09 14:02 ` Andi Kleen
2009-04-09 14:02 ` Andi Kleen
2009-04-09 14:37 ` Chris Mason
2009-04-09 14:37 ` Chris Mason
2009-04-09 14:57 ` Andi Kleen
2009-04-09 14:57 ` Andi Kleen
2009-04-29 8:16 ` Wu Fengguang
2009-04-29 8:16 ` Wu Fengguang
2009-04-29 8:21 ` btrfs BUG on creating huge sparse file Wu Fengguang
2009-04-29 8:21 ` Wu Fengguang
2009-04-29 11:40 ` Chris Mason
2009-04-29 11:40 ` Chris Mason
2009-04-29 11:45 ` Wu Fengguang
2009-04-29 11:45 ` Wu Fengguang
2009-04-29 8:36 ` [PATCH] [13/16] POISON: The high level memory error handler in the VM II Andi Kleen
2009-04-29 8:36 ` Andi Kleen
2009-04-29 9:05 ` Wu Fengguang
2009-04-29 9:05 ` Wu Fengguang
2009-04-29 11:27 ` Chris Mason
2009-04-29 11:27 ` Chris Mason
2009-04-07 15:10 ` [PATCH] [14/16] x86: MCE: Rename mce_notify_user to mce_notify_irq Andi Kleen
2009-04-07 15:10 ` Andi Kleen
2009-04-07 15:10 ` [PATCH] [15/16] x86: MCE: Support action-optional machine checks Andi Kleen
2009-04-07 15:10 ` Andi Kleen
2009-04-07 15:10 ` [PATCH] [16/16] POISON: Add madvise() based injector for poisoned data Andi Kleen
2009-04-07 15:10 ` Andi Kleen
2009-04-07 19:13 ` [PATCH] [0/16] POISON: Intro Robin Holt
2009-04-07 19:13 ` Robin Holt
2009-04-07 19:38 ` Andi Kleen
2009-04-07 19:38 ` Andi Kleen
2009-04-08 5:15 ` Andrew Morton
2009-04-08 5:15 ` Andrew Morton
2009-04-08 6:15 ` Andi Kleen
2009-04-08 6:15 ` Andi Kleen
2009-04-08 17:29 ` Roland Dreier
2009-04-08 17:29 ` Roland Dreier
2009-04-09 7:22 ` Andi Kleen
2009-04-09 7:22 ` Andi Kleen
2009-04-08 5:47 ` Andrew Morton
2009-04-08 5:47 ` Andrew Morton
2009-04-08 6:21 ` Andi Kleen
2009-04-08 6:21 ` Andi Kleen
2009-04-13 13:18 ` Wu Fengguang
2009-04-13 13:18 ` Wu Fengguang
2009-05-26 12:50 ` Hidehiro Kawai
2009-05-26 12:50 ` Hidehiro Kawai
2009-05-26 13:29 ` Andi Kleen
2009-05-26 13:29 ` Andi Kleen
2009-05-28 4:37 ` Hidehiro Kawai
2009-05-28 4:37 ` Hidehiro Kawai
2009-05-28 8:00 ` Andi Kleen
2009-05-28 8:00 ` Andi Kleen
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