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arm64: mm: enable CONFIG_HOLES_IN_ZONE for NUMA 

The NUMA code may get confused by the presence of NOMAP regions within
zones, resulting in spurious BUG() checks where the node id deviates
from the containing zone's node id.

Since the kernel has no business reasoning about node ids of pages it
does not own in the first place, enable CONFIG_HOLES_IN_ZONE to ensure
that such pages are disregarded.

Acked-by: Robert Richter <rrichter@cavium.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
zero-colors
Ard Biesheuvel 2016-12-14 09:11:47 +00:00 committed by Will Deacon
parent c0bfc549e9
commit 6d526ee26c
1 changed files with 4 additions and 0 deletions
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arch/arm64/Kconfig
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@ -625,6 +625,10 @@ config NEED_PER_CPU_EMBED_FIRST_CHUNK
def_bool y
depends on NUMA
config HOLES_IN_ZONE
def_bool y
depends on NUMA
source kernel/Kconfig.preempt
source kernel/Kconfig.hz