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| author | Suresh Siddha <suresh.b.siddha@intel.com> | 2008-03-25 10:14:35 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-19 19:19:55 +0200 |
| commit | 6ec6e0d9f2fd7cb6ca6bc3bfab5ae7b5cdd8c36f (patch) | |
| tree | bf05991fd8ecf8acd76fc48f5613ddc7bcb6926f /arch/x86/Kconfig | |
| parent | 8705a49c35be088a50b8d5fc5e1aa24d6711fd5b (diff) | |
| download | linux-6ec6e0d9f2fd7cb6ca6bc3bfab5ae7b5cdd8c36f.tar.bz2 | |
srat, x86: add support for nodes spanning other nodes
For example, If the physical address layout on a two node system with 8 GB
memory is something like:
node 0: 0-2GB, 4-6GB
node 1: 2-4GB, 6-8GB
Current kernels fail to boot/detect this NUMA topology.
ACPI SRAT tables can expose such a topology which needs to be supported.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/Kconfig')
| -rw-r--r-- | arch/x86/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 2a59dbb28248..07cf77113565 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -903,6 +903,15 @@ config X86_64_ACPI_NUMA help Enable ACPI SRAT based node topology detection. +# Some NUMA nodes have memory ranges that span +# other nodes. Even though a pfn is valid and +# between a node's start and end pfns, it may not +# reside on that node. See memmap_init_zone() +# for details. +config NODES_SPAN_OTHER_NODES + def_bool y + depends on X86_64_ACPI_NUMA + config NUMA_EMU bool "NUMA emulation" depends on X86_64 && NUMA |