Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9a1b62fe858ba6780a9aeb4ab5f7751038a6c15d
Commit: 9a1b62fe858ba6780a9aeb4ab5f7751038a6c15d
Parent: 53391fa20cab6df6b476a5a0ad6be653c9de0c46
Author: Minoru Usui <[EMAIL PROTECTED]>
AuthorDate: Wed Jan 30 13:33:35 2008 +0100
Committer: Ingo Molnar <[EMAIL PROTECTED]>
CommitDate: Wed Jan 30 13:33:35 2008 +0100
x86: fix NUMA emulation on 64-bit
I found a small bug of NUMA emulation code for x86_64. (CONFIG_NUMA_EMU)
If machine is non-NUMA, find_node_by_addr() should return
NUMA_NO_NODE, but current implementation code returns existent maximum
NUMA node number + 1.
This is not existent NUMA node number.
However, this behaviour does not affect NUMA emulation fortunately, because
acpi_fake_nodes() that is caller of find_node_by_addr() gets pxm
(proximity domain) by node_to_pxm() from non-existent NUMA node number
that was returned by find_node_by_addr().
node_to_pxm() returns PXM_INVAL that means illegal or non-existent
NUMA node number.
Signed-off-by: Minoru Usui <[EMAIL PROTECTED]>
Signed-off-by: Ingo Molnar <[EMAIL PROTECTED]>
Signed-off-by: Thomas Gleixner <[EMAIL PROTECTED]>
---
arch/x86/mm/srat_64.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/mm/srat_64.c b/arch/x86/mm/srat_64.c
index 4aed38f..37308d6 100644
--- a/arch/x86/mm/srat_64.c
+++ b/arch/x86/mm/srat_64.c
@@ -416,7 +416,7 @@ static int __init find_node_by_addr(unsigned long addr)
break;
}
}
- return i;
+ return ret;
}
/*
-
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