K 10
svn:author
V 7
bdragon
K 8
svn:date
V 27
2020-09-08T23:48:49.715057Z
K 7
svn:log
V 366
[PowerPC64] Fix xive order calculation in qemu TCG

When emulating a single thread system for testing reasons, mp_maxid can
be 0. This trips up our math for calculating the order.

Account for this to fix xive attachment when emulating a single-thread
core on qemu powernv (a configuration that doesn't exist in the real world.)

Sponsored by:	Tag1 Consulting, Inc.

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