[kexec-tools PATCH] x86: extend kernel text size up to 1GB

[WANG Chao]

Currently kexec hard code X86_64_KERNEL_TEXT_SIZE to 512M. With kASLR
enabled (CONFIG_RANDOMIZED_BASE=y), kernel image base offset could be
randomized from 0 to 1GB and kexec-tools fails to get kernel virtual
address from /proc/kcore when the offset is >512M.

Now extend X86_64_KERNEL_TEXT_SIZE to 1GB to adapt kASLR.

Signed-off-by: WANG Chao <chaowang at redhat.com>
---
 kexec/arch/i386/crashdump-x86.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kexec/arch/i386/crashdump-x86.h b/kexec/arch/i386/crashdump-x86.h
index e68b626..a5b2dfd 100644
--- a/kexec/arch/i386/crashdump-x86.h
+++ b/kexec/arch/i386/crashdump-x86.h
@@ -18,7 +18,7 @@ int load_crashdump_segments(struct kexec_info *info, char *mod_cmdline,
 #define X86_64_MAXMEM        		0x3fffffffffffUL
 
 /* Kernel text size */
-#define X86_64_KERNEL_TEXT_SIZE  (512UL*1024*1024)
+#define X86_64_KERNEL_TEXT_SIZE  (1UL*1024*1024*1024)
 
 #define CRASH_MAX_MEMMAP_NR	CRASH_MAX_MEMORY_RANGES
 #define CRASH_MAX_MEMORY_RANGES	(MAX_MEMORY_RANGES + 2)
-- 
1.8.5.3