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| author | David Rientjes <rientjes@google.com> | 2007-07-21 17:11:30 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-21 18:37:14 -0700 |
| commit | 1c05f093c0721894bb60fd26d174815bb7ef2b7f (patch) | |
| tree | 894664754fadfa42ef0d841420574b8cde451a5b | |
| parent | a7e96629efcab1ccea3a376f3f5683c8d9e882c1 (diff) | |
| download | blackbird-op-linux-1c05f093c0721894bb60fd26d174815bb7ef2b7f.tar.gz blackbird-op-linux-1c05f093c0721894bb60fd26d174815bb7ef2b7f.zip | |
x86_64: disable srat when numa emulation succeeds
When NUMA emulation succeeds, acpi_numa needs to be set to -1 so that
srat_disabled() will always return true. We won't be calling
acpi_scan_nodes() or registering the true nodes we've found.
[hugh@veritas.com: Fix x86_64 CONFIG_NUMA_EMU build: acpi_numa needs CONFIG_ACPI_NUMA]
Signed-off-by: David Rientjes <rientjes@google.com>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | arch/x86_64/mm/numa.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/x86_64/mm/numa.c b/arch/x86_64/mm/numa.c index 0191b1ca6aa4..6da235522269 100644 --- a/arch/x86_64/mm/numa.c +++ b/arch/x86_64/mm/numa.c @@ -473,9 +473,13 @@ out: /* * We need to vacate all active ranges that may have been registered by - * SRAT. + * SRAT and set acpi_numa to -1 so that srat_disabled() always returns + * true. NUMA emulation has succeeded so we will not scan ACPI nodes. */ remove_all_active_ranges(); +#ifdef CONFIG_ACPI_NUMA + acpi_numa = -1; +#endif for_each_node_mask(i, node_possible_map) { e820_register_active_regions(i, nodes[i].start >> PAGE_SHIFT, nodes[i].end >> PAGE_SHIFT); |
