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

[Alex Williamson <alex.williamson@xxxxxx>]

On Sat, 2007-08-18 at 15:15 +0800, Xu, Anthony wrote:
> Alex,
> 
> Just talked with ACPI export, he said because the path for linux is not fully 
> tested, and they have been using windows path, the _OSI(linux) will return 
> false.
> 
> In this situation, we can't tell guest OS depending on _OSI.
> And he said, currently there is no other method to get Os type.
> 
> In this situation,
> Can you fall back to our old method?
> 
> Windows is using 8K preferred page size in region 7.
> Linux is using 16M preferred page size in region 7.
> 
> I think these will change rarely, so we can depend on this.
> 
> Another difference is,
> Windows enable VHPT in region 7,
> While linux disable VHPT in region 7,
> I think these will also change rarely.
> 
> I think both these methods work if we don't need to support other OS.
> 
> What's your opinion?

Hi Anthony,

   I was actually thinking of a different approach.  There is a DMI
interface that would allow us to have Linux automatically respond true
to _OSI(linux).  If we created a minimal SMBIOS table for VTI domains,
it seems like this would be fairly easy enable.  What do you think?
Thanks,

        Alex

-- 
Alex Williamson                             HP Open Source & Linux Org.


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