From 6d526ee26ccdcbf8eb9ddd0b584b35ac17f8c566 Mon Sep 17 00:00:00 2001 From: Ard Biesheuvel Date: Wed, 14 Dec 2016 09:11:47 +0000 Subject: [PATCH] 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 Signed-off-by: Ard Biesheuvel Signed-off-by: Will Deacon --- arch/arm64/Kconfig | 4 ++++ 1 file changed, 4 insertions(+) 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 -- 2.20.1