3 Jun
2019
3 Jun
'19
2:15 p.m.
On Fri, 2019-05-31 at 17:22 +0200, Andrea Bolognani wrote:
Commit f136b83139c6 made some changes in the way we set CPU affinity for QEMU processes, and while doing so unfortunately also introduced a logic bug in that it tried to use a NUMA node map where a CPU map was expected.
Correction: the logic bug was present even in the original implementation of the feature, introduced back in 2012 (!) with commit 0f8e7ae33ace; setting the CPU affinity earlier in the guest startup process, as we're doing since a few releases back, has probably just made the mistake easier to spot. Or maybe nobody was using it on POWER 8 and that's why we never realized something was wrong :) -- Andrea Bolognani / Red Hat / Virtualization