Sander Eikelenboom
2013-Oct-09 14:16 UTC
Re: [HVM} xen_platform_pci=0 doesn''t prevent platform device creation and disk and nic take over by PV drivers.
Hello Sander, Wednesday, October 9, 2013, 1:54:52 PM, you wrote:> Wednesday, October 9, 2013, 1:40:00 PM, you wrote:>> On Wed, 9 Oct 2013, Sander Eikelenboom wrote: >>> Hi, >>> >>> While trying to get to the bottom of my passthrough problem with the rom bar, >>> i noticed that specifiying "xen_platform_pci=0" in the config file does not prevent >>> the platform device to appear in my HVM guest and consequently the disk and nic are taken over. >>> >>> Running latest xen-unstable, together with upstream qemu and upstream seabios.>> I think that xen_platform_pci has never been implemented with upstream >> QEMU. >> However you can pass xen_emul_unplug=never to Linux to avoid >> initializing netfront and blkfront.> Tried with xen_platform_pci=0 with qemu-xen-traditional and that makes a linux 3.12-rc3 kernel crash on boot > unfortunatly the strack trace runs from the small vnc screen here :S> screenshot of what is left attachedIt also crashes on kernel 3.9.2 and 3.9.0-rc3, and 3.8.13 but not on the debian supplied 3.2.0 and 3.8.0-rc2. So the cause seems to be introduced or backported to the 3.8 series somewhere.> Pfrrt wat a mess-- Best regards, Sander mailto:linux@eikelenboom.it