From: keith mannthey Date: Sat, 21 Oct 2006 16:37:01 +0000 (+0200) Subject: [PATCH] x86-64: x86_64 hot-add memory srat.c fix X-Git-Tag: v2.6.19-rc3~15^2~16 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=926fafebc48a3218fac675f12974f9a46473bd40;p=linux-2.6 [PATCH] x86-64: x86_64 hot-add memory srat.c fix This patch corrects 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_HOTPLUG_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 Signed-off-by: Andi Kleen --- diff --git a/arch/x86_64/mm/srat.c b/arch/x86_64/mm/srat.c index 3cc0544e25..1087e150a2 100644 --- a/arch/x86_64/mm/srat.c +++ b/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 acpi_table_memory_affinity *ma) 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;