From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sander Eikelenboom Subject: Re: xl pci-attach silently fails the first time Date: Mon, 1 Dec 2014 15:46:58 +0100 Message-ID: <805308753.20141201154658@eikelenboom.it> References: <20141201125712.GA21576@aepfle.de> <20141201133244.GA24600@aepfle.de> <20141201134211.GA25822@aepfle.de> <1299044479.20141201145702@eikelenboom.it> <20141201143409.GA3669@aepfle.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20141201143409.GA3669@aepfle.de> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Olaf Hering Cc: xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org Monday, December 1, 2014, 3:34:09 PM, you wrote: > On Mon, Dec 01, Sander Eikelenboom wrote: >> Hmm the wiki also still mentions it: http://wiki.xen.org/wiki/Xen_PCI_Passthrough >> >> It was the ability with xend + qemu-trad to be able to specify the slot to >> use in the guest for the pci device. >> >> See docs/misc/vtd.txt .. that seems it has never been updated :-) >> >> (together with passing through a multifunction devices as multifunction inside >> the guest this hasn't got implemented in neither libxl and qemu-xen.) > So this looks like we a lost feature in libxl. Yes, they are on the bug list though for quite some time :-). see http://bugs.xenproject.org/xen/bug/22 Although the multifuction part missing is only slightly noted there. (a fix would need a part libxl and for HVM's at least part qemu-xen (since qemu-xen doesn't have the option implemented that qemu-trad has for the slot and multifunction assignment)) > actually be a workaround for the double pci-attach bug. Don't know about that bug. -- Sander > Olaf