From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lukas Hejtmanek Subject: Re: SWIOTLB allocation failed Date: Tue, 4 Dec 2007 16:00:25 +0100 Message-ID: <20071204150025.GD8704@ics.muni.cz> References: <20071127135301.GI4296@ics.muni.cz> <6bc632150711270603k1c22533dof7574acb0fb83b8f@mail.gmail.com> <20071204142643.GC8704@ics.muni.cz> <47556A01.6000503@theshore.net> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-2 Content-Transfer-Encoding: quoted-printable Return-path: Content-Disposition: inline In-Reply-To: <47556A01.6000503@theshore.net> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: "Christopher S. Aker" Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org On Tue, Dec 04, 2007 at 09:53:53AM -0500, Christopher S. Aker wrote: > That would attempt to assign 30 million 128k pages, or roughly 3.5 TB o= f=20 > memory towards the bounce buffer. I don't think you want that. > > swiotlb defaults to 32 or 64 (I forget) -- try bumping it to 128 or 256= . OK, but it still reports disabled: [ 162.852041] Kernel command line: root=3D/dev/sda1 ro ip=3D147.251.11.4= 4:1.2.3.4:147.251.11.1:255.255.255.128:skirit60-1:eth0:off magrathea=3Det= h1:10.0.0.1:10.0.0.101: swiotlb=3D256 xencons=3Dtty [ 162.852392] Initializing CPU#0 [ 162.852632] PID hash table entries: 4096 (order: 12, 32768 bytes) [ 162.852672] Xen reported: 2992.498 MHz processor. [ 162.852697] Console: colour dummy device 80x25 [ 162.854447] Dentry cache hash table entries: 524288 (order: 10, 419430= 4 bytes) [ 162.856471] Inode-cache hash table entries: 262144 (order: 9, 2097152 = bytes) [ 162.856816] Software IO TLB disabled --=20 Luk=E1=B9 Hejtm=E1nek