From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [PATCH 00/10] PV-IO v3 Date: Sun, 19 Aug 2007 12:24:43 +0300 Message-ID: <46C80C5B.7070009@qumranet.com> References: <20070816231357.8044.55943.stgit@ghaskins-t60p.haskins.net> <1187313953.6449.70.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org, virtualization To: Rusty Russell Return-path: In-Reply-To: <1187313953.6449.70.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: > 2) We either need huge descriptors or some chaining mechanism to > handle scatter-gather. > Or, my preference, have a small sglist in the descriptor; if the buffer doesn't fit in the sglist follow a pointer and size (stored in the same place as the immediate sglist) to an external sglist. The advantage of this is that it doesn't complicate descriptor allocation and accounting (if you have large sglists, suddenly you have fewer than expected effective descriptors). -- error compiling committee.c: too many arguments to function ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/