From: Hermann Lauer <Hermann.Lauer@xxxxxxxxxxxxxxxxxxxxx>
Date: Fri, 6 Feb 2009 11:28:25 +0100
> I bisected meanwhile the complete versions from 2.6.26 to 2.6.27 series:
>
> <2.6.26.8 boots
> 2.6.27-rc1 compile fails (see below)
> >2.6.27-rc2 hangs at boot
>
> Any chance that one of the last memory related patches will fix
> this problem ? Thanks.
It is possible.
Here are two seperate things you can try:
1) Boot with "mem=512m" on the kernel boot command line.
2) Try booting with the patch below.
Thanks!
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 51daae5..c9ab51a 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -46,6 +46,7 @@
#include <linux/page-isolation.h>
#include <linux/memcontrol.h>
#include <linux/debugobjects.h>
+#include <linux/nmi.h>
#include <asm/tlbflush.h>
#include <asm/div64.h>
@@ -707,7 +708,26 @@ static int move_freepages(struct zone *zone,
* Remove at a later date when no bug reports exist related to
* grouping pages by mobility
*/
- BUG_ON(page_zone(start_page) != page_zone(end_page));
+ if (unlikely(page_zone(start_page) != page_zone(end_page))) {
+ printk(KERN_ERR "move_freepages: Bogus zones: "
+ "start_page[%p] end_page[%p] zone[%p]\n",
+ start_page, end_page, zone);
+ printk(KERN_ERR "move_freepages: "
+ "start_zone[%p] end_zone[%p]\n",
+ page_zone(start_page), page_zone(end_page));
+ printk(KERN_ERR "move_freepages: "
+ "start_pfn[0x%lx] end_pfn[0x%lx]\n",
+ page_to_pfn(start_page), page_to_pfn(end_page));
+ printk(KERN_ERR "move_freepages: "
+ "start_nid[%d] end_nid[%d]\n",
+ page_to_nid(start_page), page_to_nid(end_page));
+ spin_unlock(&zone->lock);
+ local_irq_enable();
+ while (1) {
+ barrier();
+ touch_nmi_watchdog();
+ }
+ }
#endif
for (page = start_page; page <= end_page;) {
@@ -2583,6 +2603,7 @@ void __meminit memmap_init_zone(unsigned long size, int nid, unsigned long zone,
unsigned long end_pfn = start_pfn + size;
unsigned long pfn;
struct zone *z;
+ int tmp;
z = &NODE_DATA(nid)->node_zones[zone];
for (pfn = start_pfn; pfn < end_pfn; pfn++) {
@@ -2594,7 +2615,8 @@ void __meminit memmap_init_zone(unsigned long size, int nid, unsigned long zone,
if (context == MEMMAP_EARLY) {
if (!early_pfn_valid(pfn))
continue;
- if (!early_pfn_in_nid(pfn, nid))
+ tmp = early_pfn_to_nid(pfn);
+ if (tmp > -1 && tmp != nid)
continue;
}
page = pfn_to_page(pfn);
@@ -2961,8 +2983,9 @@ int __meminit early_pfn_to_nid(unsigned long pfn)
return early_node_map[i].nid;
}
- return 0;
+ return -1;
}
+
#endif /* CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID */
/* Basic iterator support to walk early_node_map[] */
--
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