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

[Alex Williamson <alex.williamson@xxxxxx>]

   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.

   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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