[PATCH] Kexec on panic vmlinux initrd fix

[PATCH] Kexec on panic vmlinux initrd fix

[Vivek Goyal]

Hi,

This is a minor bug fix in kexec to resolve the problem of loading panic
kernel with initrd. 

Thanks
Vivek 

o Problem: Loading a capture kenrel fails if initrd is also being loaded.
  This has been observed for vmlinux image for kexec on panic case.

o This patch fixes the problem. In segment location and size verification
  logic, minor correction has been done. Segment memory end (mend) should be
  mstart + memsz - 1. This one byte offset was source of failure for initrd
  loading which was being loaded at hole boundary.


Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com>
---

 linux-2.6.12-mm1-vivek/kernel/kexec.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

diff -puN kernel/kexec.c~kexec-on-panic-vmlinux-initrd-fix kernel/kexec.c
--- linux-2.6.12-mm1/kernel/kexec.c~kexec-on-panic-vmlinux-initrd-fix	2005-06-21 14:46:57.905192856 +0530
+++ linux-2.6.12-mm1-vivek/kernel/kexec.c	2005-06-21 14:46:57.914191488 +0530
@@ -279,7 +279,7 @@ static int kimage_crash_alloc(struct kim
 		unsigned long mstart, mend;
 
 		mstart = image->segment[i].mem;
-		mend = mstart + image->segment[i].memsz;
+		mend = mstart + image->segment[i].memsz - 1;
 		/* Ensure we are within the crash kernel limits */
 		if ((mstart < crashk_res.start) || (mend > crashk_res.end))
 			goto out;
_