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| author | Daniel Yeisley <dan.yeisley@unisys.com> | 2006-05-30 22:47:57 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-05-30 20:31:06 -0700 |
| commit | 0d01532451710110a93891ae152d1dd1ee006ccf (patch) | |
| tree | 565b85776957df727847ffd752018022e83c63f9 /arch/x86_64/mm | |
| parent | b2468e525f29882f866cb0b832956e69328f9647 (diff) | |
| download | linux-3.10-0d01532451710110a93891ae152d1dd1ee006ccf.tar.gz linux-3.10-0d01532451710110a93891ae152d1dd1ee006ccf.tar.bz2 linux-3.10-0d01532451710110a93891ae152d1dd1ee006ccf.zip | |
[PATCH] x86_64: Handle empty node zero
From: Daniel Yeisley <dan.yeisley@unisys.com>
It is possible to boot a Unisys ES7000 with CPUs from multiple cells, and not
also include the memory from those cells. This can create a scenario where
node 0 has cpus, but no associated memory. The system will boot fine in a
configuration where node 0 has memory, but nodes 2 and 3 do not.
[AK: I rechecked the code and generic code seems to indeed handle that already.
Dan's original patch had a change for mm/slab.c that seems to be already in now.]
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/x86_64/mm')
| -rw-r--r-- | arch/x86_64/mm/srat.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86_64/mm/srat.c b/arch/x86_64/mm/srat.c index e1513532df2..474df22c6ed 100644 --- a/arch/x86_64/mm/srat.c +++ b/arch/x86_64/mm/srat.c @@ -399,8 +399,10 @@ int __init acpi_scan_nodes(unsigned long start, unsigned long end) /* First clean up the node list */ for (i = 0; i < MAX_NUMNODES; i++) { cutoff_node(i, start, end); - if ((nodes[i].end - nodes[i].start) < NODE_MIN_SIZE) + if ((nodes[i].end - nodes[i].start) < NODE_MIN_SIZE) { unparse_node(i); + node_set_offline(i); + } } if (acpi_numa <= 0) |