From mboxrd@z Thu Jan 1 00:00:00 1970 From: Juergen Kreileder Subject: Re: SW-IOMMU / ata_piix errors with 2.6.27-rc1 Date: Mon, 04 Aug 2008 02:40:46 +0200 Message-ID: <4896500E.2040304@blackdown.de> References: <4896157A.2020907@shaw.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from smtp.blackdown.de ([78.47.134.53]:44789 "EHLO smtp.blackdown.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751547AbYHDAku (ORCPT ); Sun, 3 Aug 2008 20:40:50 -0400 In-Reply-To: <4896157A.2020907@shaw.ca> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Robert Hancock Cc: linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org Robert Hancock wrote: > Juergen Kreileder wrote: >> Hi, >> >> I get lots of errors like this with 2.6.27-rc1 on my >> Macbook Pro (3rd generation), 2.6.26 seems to work fine: >> >> [ 907.524509] DMA: Out of SW-IOMMU space for 45056 bytes at device 0000:00:1f.2 >> [ 907.524783] ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 >> [ 907.524796] ata3.00: cmd 35/00:50:08:91:5c/00:01:0f:00:00/e0 tag 0 dma 172032 out >> [ 907.524798] res 50/00:00:ff:90:5c/00:00:0f:00:00/ef Emask 0x40 (internal error) >> [ 907.524805] ata3.00: status: { DRDY } >> [ 907.646590] ata3.00: configured for UDMA/133 >> [ 907.646624] ata3: EH complete >> >> >> Any suggestions? > > You can try increasing the swiotlb size by booting with swiotlb=65536 > (for 128MB) or swiotlb=131072 (for 256MB), and see if that makes the > problem go away.. It's unclear why you'd be running out of SWIOTLB space > now, though, if 2.6.26 worked fine.. Still happening, although 256M make it a bit harder to trigger. Juergen -- Juergen Kreileder, Blackdown Java-Linux Team http://blog.blackdown.de/