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authorArd Biesheuvel <ard.biesheuvel@linaro.org>2016-12-14 09:11:47 +0000
committerWill Deacon <will.deacon@arm.com>2017-02-06 18:51:50 +0000
commit6d526ee26ccdcbf8eb9ddd0b584b35ac17f8c566 (patch)
tree0cd336035c1c60d6d7020f9e7f93bc978894dcf6
parentc0bfc549e96231e0ead4424de6e4933fde819d70 (diff)
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>
-rw-r--r--arch/arm64/Kconfig4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 0ce23130cc9b..f45405664558 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -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