The patch titled
x86_64 hot-add memroy srat.c fix
has been added to the -mm tree. Its filename is
x86_64-hot-add-memroy-sratc-fix.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: x86_64 hot-add memroy srat.c fix
From: keith mannthey <kmannth@xxxxxxxxxx>
Correct the logic used in srat.c to figure out what
parsing what action to take when registering hot-add areas.
Hot-add areas should only be added to the node information for the
MEMORY_HOTPLGU_RESERVE case. When booting MEMORY_HOTPLUG_SPARSE hot-add
areas on everything but the last node are getting include in the node data
and during kernel boot the pages are setup then the kernel dies when the
pages are used. This patch fixes this issue.
Signed-off-by: Keith Mannthey <kmannth@xxxxxxxxxx>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
arch/x86_64/mm/srat.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN arch/x86_64/mm/srat.c~x86_64-hot-add-memroy-sratc-fix arch/x86_64/mm/srat.c
--- a/arch/x86_64/mm/srat.c~x86_64-hot-add-memroy-sratc-fix
+++ a/arch/x86_64/mm/srat.c
@@ -207,7 +207,7 @@ static inline int save_add_info(void)
return hotadd_percent > 0;
}
#else
-int update_end_of_memory(unsigned long end) {return 0;}
+int update_end_of_memory(unsigned long end) {return -1;}
static int hotadd_enough_memory(struct bootnode *nd) {return 1;}
#ifdef CONFIG_MEMORY_HOTPLUG_SPARSE
static inline int save_add_info(void) {return 1;}
@@ -337,7 +337,7 @@ acpi_numa_memory_affinity_init(struct ac
push_node_boundaries(node, nd->start >> PAGE_SHIFT,
nd->end >> PAGE_SHIFT);
- if (ma->flags.hot_pluggable && !reserve_hotadd(node, start, end) < 0) {
+ if (ma->flags.hot_pluggable && (reserve_hotadd(node, start, end) < 0)) {
/* Ignore hotadd region. Undo damage */
printk(KERN_NOTICE "SRAT: Hotplug region ignored\n");
*nd = oldnode;
_
Patches currently in -mm which might be from kmannth@xxxxxxxxxx are
make-kernels-with-config_x86_generic-and-config_smp-compilable.patch
x86_64-hot-add-memroy-sratc-fix.patch
-
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