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xen-devel
Re: [Xen-devel] xen-unstable domU smp broken for vcpus > physical cpus
I'm fairly certain that I've had vcpus > pcpus in domU working fine as
recent as 2005-03-31, but I'll backtrack and verify.
I just built the 2005-03-31 snapshot, dom0 is SMP, two vcpus, and
booted
domU with 4 vcpus with no problems. Building 2005-04-01 in a simliar
fashion now yields an oops in domU and one error [1]output from Xen.
I then went to destroy the domU that I created and Xen went down. And
appearently, I don't have xen-sysms set up right as nont of the
addresses are translated into function names.
The bug was actually in a changeset from late on 03-29, so it should
have caused crashes as far back as the 2005-03-30 snapshot (the one
taken on the morning on 03-30).
It's now fixed in the unstable repository - context switching between
VCPUs of the same domain incorrectly cleared that physical CPU from the
domain's bitmap.
-- Keir
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