Re: [Xen-devel] i686 requirements

[Ian Pratt <Ian.Pratt@xxxxxxxxxxxx>]

> Regarding XEN requirements to run, I'd like to know if there is any
> important reason to require i686-class cpus (ie: ppro, p2, etc.. and
> k7...). In my limited understanding of 386 arch, ppro added
> conditional moves and PAE, perhaps even huge-pages (have to check this
> one). Is XEN explicitely (as in, used directly on assembler code)
> using any of these?

The current Xen code needs 4MB pages (PSE) support. 

There was a patch posted a while back to avoid this constraint,
but I don't think it was fully working. We'd be very happy to
incorporate a patch that adds support for CPUs without PSE,
providing it didn't impact the normal code too much (i.e. didn't
make it less readable). 
 
> My motivation is getting XEN to run on my (aging) k6 server machine.

Chopping a tiny pie into quarters doesn't make it a bigger pie
:-)

Ian


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