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Re: [Xen-devel] Processed: Re: [HVM} xen_platform_pci=0 doesn't prevent platform device creation and disk and nic take over by PV drivers.

Friday, October 11, 2013, 5:04:04 PM, you wrote:

> graft 20 !
> prune 20 <1043931136.20131009144924@xxxxxxxxxxxxxx>
> thanks

> On Wed, 2013-10-09 at 13:15 +0100, xen@xxxxxxxxxxxxxxxxxxx wrote:
>> Processing commands for xen@xxxxxxxxxxxxxxxxxxx:
> [...]
>> Modified/created Bugs:
>>  - 20: http://bugs.xenproject.org/xen/bug/20 (new)

> Hrm, this bug is missing the useful content because Sander mailed
> Stefano and I privately and I didn't notice.

Sorry for that, it seemed xen-devel got dropped somewhere along that thread and 
i didn't notice.

Perhaps relevant if any one is going to take a look at this (since it will 
crash on boot for a newer kernel anyhow):

> 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
> It 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.

> The original message was simply:
>> 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.

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