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| author | Minoru Usui <usui@mxm.nes.nec.co.jp> | 2008-01-30 13:33:35 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:33:35 +0100 |
| commit | 9a1b62fe858ba6780a9aeb4ab5f7751038a6c15d (patch) | |
| tree | 127603cfdbb2a200d8dd2b86ddff16ec3a0484b9 /arch/x86/lib/copy_user_64.S | |
| parent | 53391fa20cab6df6b476a5a0ad6be653c9de0c46 (diff) | |
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 <usui@mxm.nes.nec.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/lib/copy_user_64.S')
0 files changed, 0 insertions, 0 deletions