From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Leonardo Chiquitto" Date: Wed, 21 Oct 2009 13:29:17 +0000 Subject: Re: [PATCH] ia64: fix SBA IOMMU to handle allocation failure Message-Id: <4ADEF08D020000860004410B@sinclair.provo.novell.com> List-Id: References: <20091018140631K.fujita.tomonori@lab.ntt.co.jp> In-Reply-To: <20091018140631K.fujita.tomonori@lab.ntt.co.jp> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: tony.luck@intel.com, FUJITA Tomonori , linux-ia64@vger.kernel.org Cc: linux-kernel@vger.kernel.org > 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 > 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. > > Signed-off-by: FUJITA Tomonori Thanks for refreshing and resubmitting this. I just received feedback confirming that the patch resolves the problem. Kind regards, Leonardo