[Xen-ia64-devel] RE: _OSI(Linux) == false

["Xu, Anthony" <anthony.xu@xxxxxxxxx>]

>
>   This changeset was just brought to my attention:
>
>http://www.kernel.org/hg/linux-2.6/rev/7f6bc8a8fb19
>
>In short, newer upstream kernels will return True for _OSI(Windows) and
>False for _OSI(Linux).  This will cause Linux VT-i domains to get
>incorrectly identified as Windows guests and do bad things with region
4
>& 5 mapping.

Does linux call _OSI(Windows)?
If not, it will not impact XEN.

Anthony


>
>   There is a DMI interface available that we could use to
automatically
>enable _OSI(Linux), but I think that means we'd need to generate a DMI
>table for HVM domains.  Sounds like a pain, but maybe it's not actually
>that hard.  Any other thoughts on how we could continue to detect the
OS
>on HVM domains for optimizations?  Thanks,
>
>       Alex
>
>--
>Alex Williamson                             HP Open Source & Linux Org.

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