Messages in this thread Patch in this message | | | Date | Thu, 25 Mar 2010 15:39:27 -0700 (PDT) | From | David Rientjes <> | Subject | [patch v2] x86: increase CONFIG_NODES_SHIFT max to 10 |
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Some larger systems require more than 512 nodes, so increase the maximum CONFIG_NODES_SHIFT to 10 for a new max of 1024 nodes.
This was tested with numa=fake=64M on systems with more than 64GB of RAM. A total of 1022 nodes were initialized.
Successfully builds with no additional warnings on x86_64 allyesconfig.
Signed-off-by: David Rientjes <rientjes@google.com> --- The BUILD_BUG_ON() in drivers/base/node.c has been fixed in Linus' -git (see 12ee3c0), so CONFIG_NODES_SHIFT of 10 no longer fails to compile for x86_64 allyesconfig.
arch/x86/Kconfig | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1213,8 +1213,8 @@ config NUMA_EMU config NODES_SHIFT int "Maximum NUMA Nodes (as a power of 2)" if !MAXSMP - range 1 9 - default "9" if MAXSMP + range 1 10 + default "10" if MAXSMP default "6" if X86_64 default "4" if X86_NUMAQ default "3"
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