From mboxrd@z Thu Jan 1 00:00:00 1970 From: Laurent Vivier Subject: Re: Hacking QEMU/KVM to use unused graphics adapters Date: Thu, 11 Oct 2007 10:40:47 +0200 Message-ID: <470DE18F.1080901@bull.net> References: <470DC5F4.80807@outpost24.com> <470DDBC5.90401@bull.net> <470DDF9F.6040509@qumranet.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1465702133==" Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org, Anthony de Almeida Lopes To: dor.laor-atKUWr5tajBWk0Htik3J/w@public.gmane.org Return-path: In-Reply-To: <470DDF9F.6040509-atKUWr5tajBWk0Htik3J/w@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 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --===============1465702133== Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig8CD1AA8AA47DD3D4BEAAB5FE" This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig8CD1AA8AA47DD3D4BEAAB5FE Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Dor Laor wrote: > Laurent Vivier wrote: >> >> Anthony de Almeida Lopes wrote: >> > I was curious if anyone thinks that it may be possible to get a >> > KVM-patched QEMU to use a real video card? For example, let's say I = had >> > a second video card. Is QEMU/kvm a codebase which would support hack= ing >> > in the ability to utilize this second video card (one not utilized b= y >> > the host Linux)? And in the situation of a laptop, would it be possi= ble >> > to boot the host Linux in a way that it would not utilize the video >> > card, but get a qemu guest to use it? >> > Theoretically, there's no reason this isn't possible, right? >> >> We need something like a "PCI proxy" allowing to route some I/O to >> virtual PCI >> devices and others to real PCI devices. Moreover we must be able to >> inform host >> kernel to not manage a given PCI card (or be able to hot unplug it >> from host >> kernel PCI structures) >> > There is work in progress for pci pass through capability. Besides PCI = it > also required to have pv dma or 1-1 mapping between the guest and the h= ost. > Both will be released in the following month. NIC pass through works bu= t > I'm > not sure about the features required from VGA pass through. > Dor. Perhaps if we use host IOMMU we don't need pv DMA ? How do you say to host to not manage a PCI devices and let the guest mana= ging it ? Laurent --=20 ---------------- Laurent.Vivier-6ktuUTfB/bM@public.gmane.org ----------------- "Given enough eyeballs, all bugs are shallow" E. S. Raymond --------------enig8CD1AA8AA47DD3D4BEAAB5FE Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.7 (GNU/Linux) iD8DBQFHDeGU9Kffa9pFVzwRAn78AJ9dx9NtzLdw3NFheIdGjxN1ekUJxwCffr/q H05+K2u4MhRiG8yQvGL2bAM= =JG10 -----END PGP SIGNATURE----- --------------enig8CD1AA8AA47DD3D4BEAAB5FE-- --===============1465702133== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline ------------------------------------------------------------------------- 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/ --===============1465702133== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ kvm-devel mailing list kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org https://lists.sourceforge.net/lists/listinfo/kvm-devel --===============1465702133==--