linux-kernel - Re: [PATCH] memory hotadd fixes [1/5] not-aligned memory hotadd handling fix

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Message-Id: <20060803160328.f66dcfd2.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Thu, 3 Aug 2006 16:03:28 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Andrew Morton <akpm@...l.org>
Cc:	linux-kernel@...r.kernel.org, lhms-devel@...ts.sourceforge.net,
	kmannth@...ibm.com, y-goto@...fujitsu.com
Subject: Re: [PATCH] memory hotadd fixes [1/5] not-aligned memory hotadd
 handling fix

On Wed, 2 Aug 2006 23:38:02 -0700
Andrew Morton <akpm@...l.org> wrote:

> On Thu, 3 Aug 2006 12:30:39 +0900
> KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> wrote:
> 
> > After Keith's report of memory hotadd failure, I increased test patterns.
> > These patches are a result of new patterns. But I cannot cover all existing
> > memory layout in the world, more tests are needed.
> > Now, I think my patch can make things better and want this codes to be tested
> > in -mm.patche series is consitsts of 5 patches.
> 
> I expect the code which these patches touch is completely untested in -mm, so
> all we'll get is compile testing and some review.
> 
yes.. just tested on my emulation box with some patterns, including patterns in
hot-add-failure report.(very small chunks in one section, and very big contiguous
memory hot add and unaligned memory hot-add.)

> Given that these patches touch pretty much nothing but the memory hot-add
> paths I'd be inclined to fast-track them into 2.6.18. 
> Do you agree that these patches are sufficiently safe and that the problems 
> that they solve are sufficiently serious for us to take that approach?
> 
I think this patch fixes serious problems. This patch can enlarge memory-hot-add
supported hardware. And fast-track paths sounds attractiveto me.
But I want more tests and reviews.
I posted this 3 weeks ago to -lhms but no positive/negative answers from the list.

Thanks,
-Kame

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