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| author | Greg Kurz <groug@kaod.org> | 2016-07-22 13:10:36 +0200 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2016-07-25 15:43:41 +1000 |
| commit | 12bf2d33fe520f9cfd09f7bf9d46ae3202c3cb49 (patch) | |
| tree | 11d5a8c78175d70a99ec9ca3a7ce54650179024d /bsd-user | |
| parent | 2fff4bad40abe5781d21c5e134161a1bd13c43cd (diff) | |
| download | qemu-12bf2d33fe520f9cfd09f7bf9d46ae3202c3cb49.zip qemu-12bf2d33fe520f9cfd09f7bf9d46ae3202c3cb49.tar.gz qemu-12bf2d33fe520f9cfd09f7bf9d46ae3202c3cb49.tar.bz2 | |
spapr: disintricate core-id from DT semantics
The goal of this patch is to have a stable core-id which does not depend
on any DT related semantics, which involve non-obvious computations on
modern PowerPC server cpus.
With this patch, the DT core id is computed on-demand as:
(core-id / smp_threads) * smt
where smt is the number of threads per core in the host.
This formula should be consolidated in a helper since it is needed in
several places.
Other uses for core-id includes: compute a stable cpu_index (which
allows random order hotplug/unplug without breaking migration) and
NUMA.
Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'bsd-user')
0 files changed, 0 insertions, 0 deletions