David Hildenbrand e352f576d3 powerpc/pseries/cmm: fix managed page counts when migrating pages between zones ... Commit 63341ab037 (virtio-balloon: fix managed page counts when migrating pages between zones) fixed a long existing BUG in the virtio-balloon driver when pages would get migrated between zones. I did not try to reproduce on powerpc, but looking at the code, the same should apply to powerpc/cmm ever since it started using the balloon compaction infrastructure (luckily just recently). In case we have to migrate a ballon page to a newpage of another zone, the managed page count of both zones is wrong. Paired with memory offlining (which will adjust the managed page count), we can trigger kernel crashes and all kinds of different symptoms. Fix it by properly adjusting the managed page count when migrating if the zone changed. We'll temporarily modify the totalram page count. If this ever becomes a problem, we can fine tune by providing helpers that don't touch the totalram pages (e.g., adjust_zone_managed_page_count()). Fixes: fe030c9b85 ("powerpc/pseries/cmm: Implement balloon compaction") Signed-off-by: David Hildenbrand <david@redhat.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20191216103058.4958-1-david@redhat.com		2019-12-16 23:15:16 +11:00
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4xx
8xx	powerpc/8xx: use the fixmapped IMMR in cpm_reset()	2019-11-19 19:38:35 +11:00
40x
44x
52xx	compat_ioctl: move WDIOC handling into wdt drivers	2019-10-23 17:23:46 +02:00
82xx
83xx	powerpc/sysdev: drop simple gpio	2019-11-21 15:41:34 +11:00
85xx	powerpc/sysdev: drop simple gpio	2019-11-21 15:41:34 +11:00
86xx	powerpc/sysdev: drop simple gpio	2019-11-21 15:41:34 +11:00
512x
amigaone
cell	powerpc/spufs: remove set but not used variable 'ctx'	2019-11-13 16:58:07 +11:00
chrp
embedded6xx
maple
pasemi
powermac
powernv	powerpc/perf: Disable trace_imc pmu	2019-12-05 17:06:40 +11:00
ps3
pseries	powerpc/pseries/cmm: fix managed page counts when migrating pages between zones	2019-12-16 23:15:16 +11:00
fsl_uli1575.c
Kconfig	powerpc/sysdev: drop simple gpio	2019-11-21 15:41:34 +11:00
Kconfig.cputype	powerpc updates for 5.5	2019-11-30 14:35:43 -08:00
Makefile