linux-kernel - Re: [PATCH] ia64: fix SBA IOMMU to handle allocation failure properly

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Date:	Tue, 15 Dec 2009 03:36:42 -0700
From:	"Leonardo Chiquitto" <lchiquitto@...ell.com>
To:	<tony.luck@...el.com>,
	"FUJITA Tomonori" <fujita.tomonori@....ntt.co.jp>,
	<linux-ia64@...r.kernel.org>
Cc:	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ia64: fix SBA IOMMU to handle allocation failure
	 properly

>>> On 10/18/2009 at 03:07 AM, in message
<20091018140631K.fujita.tomonori@....ntt.co.jp>, FUJITA Tomonori
<fujita.tomonori@....ntt.co.jp> wrote: 
> This is an updated patch of the patch that I've posted one year
> ago. Shehjar reported the problem and confirmed that the patch fixes
> it:
> 
> http://lkml.indiana.edu/hypermail/linux/kernel/0811.0/01562.html
> 
> Leonardo told me that he hit the same problem and confirmed that the
> patch fixes it.
> 
> =
> From: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
> Subject: [PATCH] ia64: fix SBA IOMMU to handle allocation failure properly
> 
> It's possible that SBA IOMMU might fail to find I/O space under heavy
> I/Os. SBA IOMMU panics on allocation failure but it shouldn't; drivers
> can handle the failure. The majority of other IOMMU drivers don't
> panic on allocation failure.
> 
> This patch fixes SBA IOMMU path to handle allocation failure properly.

Hello,

Please, any chance to have this patch committed to 2.6.33?

Thanks,
Leonardo

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