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

[tgingold@xxxxxxx]

Quoting "Xu, Anthony" <anthony.xu@xxxxxxxxx>:

> 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.

That's the major issue.  There are at least half a dozen of OS for ia64 and
we are not sure this method won't break another OS.

ACPI method is fine.  If it could't work, I'd prefer explicit flag in xm
configuration file.

Tristan.

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