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@ 2008-08-24 22:43 Yinghai Lu
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From: Yinghai Lu @ 2008-08-24 22:43 UTC (permalink / raw)
To: Ingo Molnar, Thomas Gleixner, H. Peter Anvin, Andrew Morton
Cc: linux-kernel, Yinghai Lu, Bernhard Walle, Vivek Goyal,
Eric W. Biederman
may need user to have new kexec tools that could create e820 table
from /sys/firmware/memmap instead of /proc/iomem for second kernel
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Bernhard Walle <bwalle@suse.de>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Index: linux-2.6/arch/x86/kernel/e820.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/e820.c
+++ linux-2.6/arch/x86/kernel/e820.c
@@ -1279,6 +1279,10 @@ void __init e820_reserve_resources(void)
res = alloc_bootmem_low(sizeof(struct resource) * e820.nr_map);
for (i = 0; i < e820.nr_map; i++) {
+ if (e820.map[i].type != E820_RAM) {
+ res++;
+ continue;
+ }
end = e820.map[i].addr + e820.map[i].size - 1;
#ifndef CONFIG_RESOURCES_64BIT
if (end > 0x100000000ULL) {
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