From: Vanshidhar Konda Date: Fri, 30 Oct 2020 17:30:50 +0000 (-0700) Subject: [1/2] arm64: NUMA: Kconfig: Increase NODES_SHIFT to 4 X-Git-Tag: archive/raspbian/5.10.4-1+rpi1^2^2^2^2~38 X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=8b8eb59aa5e485145bf5f7b56a5367c906d57af2;p=linux.git [1/2] arm64: NUMA: Kconfig: Increase NODES_SHIFT to 4 Origin: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git/commit?id=2a13c13b39a8aea4c69a31549e4cb0094f30103b The current arm64 default config limits max NUMA nodes available on system to 4 (NODES_SHIFT = 2). Today's arm64 systems can reach or exceed 16 NUMA nodes. To accomodate current hardware and to fit NODES_SHIFT within page flags on arm64, increase NODES_SHIFT to 4. Signed-off-by: Vanshidhar Konda Acked-by: Catalin Marinas Link: https://lore.kernel.org/r/20201020173409.1266576-1-vanshikonda@os.amperecomputing.com/ Link: https://lore.kernel.org/r/20201030173050.1182876-1-vanshikonda@os.amperecomputing.com Signed-off-by: Will Deacon Gbp-Pq: Topic bugfix/arm64 Gbp-Pq: Name arm64-numa-kconfig-increase-nodes_shift-to-4.patch --- diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 6d232837cbe..b94e4d1deb2 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -972,7 +972,7 @@ config NUMA config NODES_SHIFT int "Maximum NUMA Nodes (as a power of 2)" range 1 10 - default "2" + default "4" depends on NEED_MULTIPLE_NODES help Specify the maximum number of NUMA Nodes available on the target