From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Williamson Subject: Re: [RFC] Auto rebind PCI devices Date: Wed, 5 Apr 2006 16:18:16 +0100 Message-ID: <200604051618.16626.mark.williamson@cl.cam.ac.uk> References: <200604041743.32542.mark.williamson@cl.cam.ac.uk> <20060404190935.GB1221@granada.merseine.nu> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20060404190935.GB1221@granada.merseine.nu> Content-Disposition: inline List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: xen-devel@lists.xensource.com Cc: hap9@epoch.ncsc.mil List-Id: xen-devel@lists.xenproject.org > > * If the device specificed in the config is bound *and* pci-force-rebind > > is set, then unbind it from the existing driver and rebind it to pciback, > > then start the domain. > > That sounds awkward. What's the use case you see in mind from stealing > devices from a domain while it's running? To clarify my thinking on this a little more: I think it would be good to be able to move PCI devices between domains in a reasonably straightforward way. This would be something like the PCI hotplug for IBM's dynamic LPAR, which is already supported by Linux. The eventual goal being that you can reassign PCI devices "hotplug-style" (it would look like a hotplug to the pcifront kernel) at runtime, with the user interface providing appropriate safety checks / "do you really want this?" dialogs, according to the level of confidence of the user. Cheers, Mark -- Dave: Just a question. What use is a unicyle with no seat? And no pedals! Mark: To answer a question with a question: What use is a skateboard? Dave: Skateboards have wheels. Mark: My wheel has a wheel!