Re: [Xen-devel] VMX test report for Xen 4.4-unstable-C/S 27314

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 12.08.13 at 05:43, "Liu, SongtaoX" <songtaox.liu@xxxxxxxxx> wrote:
>> >>> On 08.08.13 at 09:13, "Ren, Yongjie" <yongjie.ren@xxxxxxxxx> wrote:
>> > 2. device pass-through works even if VT-d is disabled in BIOS
>> >
>> > http://bugzilla-archived.xenproject.org//bugzilla/show_bug.cgi?id=1866 
>> 
>> Are you sure this was seen with 27314:e6ca87e13937? I ask because
>> 27204:06c2f6031aff is supposed to be taking care of this (and it did in my 
> and - I
>> think - also in others' testing). To make things even less clear, the bug 
> itself
>> mentions 27203 and 27214...
>> 
> Yes, it also exists in c/s 27204:06c2f6031aff, 27324:e9c802e5acc9.
> vt-d function had been disabled in BIOS, with "iommu=0" in grub line,
> "xl pci-assignable-add", "xl pci-attach" still works, and could passthrough 
> to 
> hvm guest,
> but the attached PCI device could not get IP. 

Please provide proof of that (logs + xl output) - I don't really trust
this given the already mentioned confusion about changesets in the
bug vs the report here.

Jan


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