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From: Ingo Molnar <mingo@elte.hu>
To: Yinghai Lu <yinghai@kernel.org>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>,
	rdreier@cisco.com, linux-kernel@vger.kernel.org,
	Christoph Lameter <cl@linux-foundation.org>
Subject: Re: bisected crash due to "x86: Move swiotlb initialization before dma32_free_bootmem"
Date: Tue, 15 Dec 2009 12:43:51 +0100	[thread overview]
Message-ID: <20091215114351.GA32722@elte.hu> (raw)
In-Reply-To: <4B277235.4010308@kernel.org>


* Yinghai Lu <yinghai@kernel.org> wrote:

> FUJITA Tomonori wrote:
> > On Tue, 15 Dec 2009 11:56:50 +0100
> > Ingo Molnar <mingo@elte.hu> wrote:
> > 
> >> * FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> wrote:
> >>
> >>> There are a few people who hit this. How many people use a box with over 
> >>> 256GB memory?
> >>>
> >>> And you can work around this with "dma32_size" kernel boot option.
> >> Well, since the kernel has not crashed before this change there's really just 
> >> two options as per upstream kernel regression policy: either we fix it or we 
> >> revert it.
> > 
> > As I wrote, here is a patch that can be applied to cleanly to the git
> > head:
> > 
> > http://www.kernel.org/pub/linux/kernel/people/tomo/misc/0001-x86-two-stage-swiotlb-initialization.patch
> > 
> > It fixes the problem. Yinghai, can you test it? It should work but
> > it's good to confirm it.
> 
> i tested already, it works.

Ok, mind someone please resend the agreed-upon patch with a Tested-by/Acked-by 
line so that i can apply it?

Thanks,

	Ingo

  reply	other threads:[~2009-12-15 11:44 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-12-15  7:47 bisected crash due to "x86: Move swiotlb initialization before dma32_free_bootmem" Roland Dreier
2009-12-15  8:55 ` FUJITA Tomonori
2009-12-15  9:04   ` Yinghai Lu
2009-12-15  9:23     ` FUJITA Tomonori
2009-12-15  9:11   ` Yinghai Lu
2009-12-15  9:23     ` FUJITA Tomonori
2009-12-15 10:56       ` Ingo Molnar
2009-12-15 11:10         ` FUJITA Tomonori
2009-12-15 11:25           ` Yinghai Lu
2009-12-15 11:43             ` Ingo Molnar [this message]
2009-12-15 11:50             ` FUJITA Tomonori
2009-12-15 13:04             ` Yinghai Lu

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