From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [PATCH 6/6] virtio ring helper Date: Thu, 20 Sep 2007 14:43:34 +0200 Message-ID: <46F26AF6.60904@qumranet.com> References: <1190289808.7262.223.camel@localhost.localdomain> <1190290140.7262.228.camel@localhost.localdomain> <1190290369.7262.231.camel@localhost.localdomain> <1190290495.7262.235.camel@localhost.localdomain> <1190290606.7262.239.camel@localhost.localdomain> <1190290761.7262.242.camel@localhost.localdomain> <1190291234.7262.246.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel , lguest , virtualization To: Rusty Russell Return-path: In-Reply-To: <1190291234.7262.246.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: kvm.vger.kernel.org Rusty Russell wrote: > These helper routines supply most of the virtqueue_ops for hypervisors > which want to use a ring for virtio. Unlike the previous lguest > implementation: > > 3) The page numbers are always 64 bit (PAE anyone?) > 32 bits of page numbers give 44 bits of physical address on x86. That's 16TB per guest. Admittedly it's smaller on a VAX. I don't like the chaining and would prefer the descriptor to refer to an array of page descriptors. However I can't complain since this isn't common code. -- error compiling committee.c: too many arguments to function ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/