From bfa0e9a07cd31f3858239dbc93011b82780acf4b Mon Sep 17 00:00:00 2001 From: keith mannthey Date: Mon, 25 Sep 2006 16:25:35 -0700 Subject: [PATCH] [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 Cc: Andy Whitcroft Cc: Dave Hansen Cc: Andi Kleen Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/i386/kernel/smpboot.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/i386/kernel/smpboot.c b/arch/i386/kernel/smpboot.c index f948419c888a..efe07990e7fc 100644 --- a/arch/i386/kernel/smpboot.c +++ b/arch/i386/kernel/smpboot.c @@ -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) -- 2.20.1