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xen-devel
Re: [Xen-devel] address space reorganization
Keir Fraser wrote:
We need generally to think about how flexible we want to be in allowing
migration between different machine configurations. Shoudl we require
identical h/w specs, or allow differences in I/O devices, CPU and/or
memory? We will already have to be careful about downgrading cpu specs
when we migrate (e.g., Linux locks onto using multimedia instructions
for software raid that are unavailable post-migrate).
Why not treat the functions that use special mm-instructions (like the
software RAID code) as critical sections that cannot overlap with
migration, and then have the guestOS re-calibrate its use of these
features upon arrival?
[ insert standard plug of self-migration here :-) ]
Jacob
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