From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Veillard Subject: Re: DMA trouble with current xen-sparse Date: Wed, 2 Nov 2005 10:59:41 -0500 Message-ID: <20051102155941.GA2580@redhat.com> References: <20051102153617.GB26587@devserv.devel.redhat.com> Reply-To: veillard@redhat.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20051102153617.GB26587@devserv.devel.redhat.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Ian Pratt Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org On Wed, Nov 02, 2005 at 10:36:17AM -0500, Stephen Tweedie wrote: > Hi, > > On Wed, Nov 02, 2005 at 03:32:58PM -0000, Ian Pratt wrote: > > > Does your card support TSO? What revision e1000 is it? > > Yes, and I'll check on Friday once I'm back from travelling (but it is > a very recent box.) I am seeing the exact same problem with my Dell Latitude D800 laptop using Ethernet controller: Broadcom Corporation NetXtreme BCM5705M Gigabit Ethernet (rev 01) This is a relatively common and not so recent configuration. > > Please can you try turning it off with: > > ethtool -K eth0 tso off > > I already tried that and it did not help. I've also tried both gcc32 > and gcc4 with no success. [root@localhost ~]# ethtool -K eth0 tso off Cannot set device tcp segmentation offload settings: Operation not supported too bad ... with 'swiotlb=force swiotlb=8m' kernel parameters the box is stable, without it very basic network access can crash it (say 'locate lib' over ssh) and then the whole system reboots. 100% reproductible for me, and without crazy hardware :-) Hope this helps, Daniel -- Daniel Veillard | Red Hat http://redhat.com/ veillard@redhat.com | libxml GNOME XML XSLT toolkit http://xmlsoft.org/ http://veillard.com/ | Rpmfind RPM search engine http://rpmfind.net/