openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

[PATCH] i386: fix flat mode numa on a real numa system 

If there is only 1 node in the system cpus should think they are apart of
some other node.

If cases where a real numa system boots the Flat numa option make sure the
cpus don't claim to be apart on a non-existent node.

Signed-off-by: Keith Mannthey <kmannth@us.ibm.com>
Cc: Andy Whitcroft <apw@shadowen.org>
Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: Andi Kleen <ak@suse.de>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
keith mannthey 2006-09-25 16:25:35 -07:00 committed by Linus Torvalds
parent 3212fe1594
commit bfa0e9a07c
1 changed files with 5 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/i386/kernel/smpboot.c
View File

@ -642,9 +642,13 @@ static void map_cpu_to_logical_apicid(void)
{
int cpu = smp_processor_id();
int apicid = logical_smp_processor_id();
int node = apicid_to_node(apicid);
if (!node_online(node))
node = first_online_node;
cpu_2_logical_apicid[cpu] = apicid;
map_cpu_to_node(cpu, apicid_to_node(apicid));
map_cpu_to_node(cpu, node);
}
static void unmap_cpu_to_logical_apicid(int cpu)