The patch titled
i386: fix flat mode numa on a real numa system
has been added to the -mm tree. Its filename is
i386-fix-flat-mode-numa-on-a-real-numa-system.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: i386: fix flat mode numa on a real numa system
From: keith mannthey <kmannth@xxxxxxxxxx>
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@xxxxxxxxxx>
Cc: Andy Whitcroft <apw@xxxxxxxxxxxx>
Cc: Dave Hansen <haveblue@xxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxx>
Cc: <stable@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
arch/i386/kernel/smpboot.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff -puN arch/i386/kernel/smpboot.c~i386-fix-flat-mode-numa-on-a-real-numa-system arch/i386/kernel/smpboot.c
--- a/arch/i386/kernel/smpboot.c~i386-fix-flat-mode-numa-on-a-real-numa-system
+++ a/arch/i386/kernel/smpboot.c
@@ -642,9 +642,13 @@ static void map_cpu_to_logical_apicid(vo
{
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)
_
Patches currently in -mm which might be from kmannth@xxxxxxxxxx are
i386-bootioremap--kexec-fix.patch
i386-fix-flat-mode-numa-on-a-real-numa-system.patch
hot-add-mem-x86_64-fixup-externs.patch
hot-add-mem-x86_64-kconfig-changes.patch
hot-add-mem-x86_64-enable-sparsemem-in-sratc.patch
hot-add-mem-x86_64-memory_add_physaddr_to_nid-enable.patch
hot-add-mem-x86_64-memory_add_physaddr_to_nid-node-fixup.patch
hot-add-mem-x86_64-memory_add_physaddr_to_nid-node-fixup-fix.patch
hot-add-mem-x86_64-memory_add_physaddr_to_nid-node-fixup-fix-2.patch
hot-add-mem-x86_64-use-config_memory_hotplug_sparse.patch
hot-add-mem-x86_64-use-config_memory_hotplug_reserve.patch
hot-add-mem-x86_64-use-config_memory_hotplug_reserve-fix.patch
convert-i386-numa-kva-space-to-bootmem.patch
convert-i386-numa-kva-space-to-bootmem-tidy.patch
convert-i386-summit-subarch-to-use-srat-info-for-apicid_to_node-calls.patch
-
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