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(parent: 2d4d9b3) | patch
powerpc/numa: document topology_updates_enabled, disable by default
authorNathan Lynch <nathanl@linux.ibm.com>
Thu, 18 Apr 2019 18:56:58 +0000 (13:56 -0500)
committerMichael Ellerman <mpe@ellerman.id.au>
Sat, 20 Apr 2019 12:03:59 +0000 (22:03 +1000)
commit558f86493df09f68f79fe056d9028d317a3ce8ab
tree7875a04e55f4cb93e2f67f062026a7113ca0775ftree | snapshot
parent2d4d9b308f8f8dec68f6dbbff18c68ec7c6bd26fcommit | diff
powerpc/numa: document topology_updates_enabled, disable by default

Changing the NUMA associations for CPUs and memory at runtime is
basically unsupported by the core mm, scheduler etc. We see all manner
of crashes, warnings and instability when the pseries code tries to do
this. Disable this behavior by default, and document the switch a bit.

Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
arch/powerpc/mm/numa.c diff | blob | history
Domain: System / Kernel;