diff -up kexec-tools-2.0.0/kexec/arch/x86_64/crashdump-x86_64.h.orig kexec-tools-2.0.0/kexec/arch/x86_64/crashdump-x86_64.h
--- kexec-tools-2.0.0/kexec/arch/x86_64/crashdump-x86_64.h.orig	2010-04-30 15:14:13.000000000 -0400
+++ kexec-tools-2.0.0/kexec/arch/x86_64/crashdump-x86_64.h	2010-04-30 15:14:20.000000000 -0400
@@ -11,7 +11,7 @@ int load_crashdump_segments(struct kexec
 #define MAXMEM           0x3fffffffffffUL
 
 /* Kernel text size */
-#define KERNEL_TEXT_SIZE  (40UL*1024*1024)
+#define KERNEL_TEXT_SIZE  (512UL*1024*1024)
 
 #define CRASH_MAX_MEMMAP_NR	(KEXEC_MAX_SEGMENTS + 1)
 #define CRASH_MAX_MEMORY_RANGES	(MAX_MEMORY_RANGES + 2)