[PATCH] Make bootsector stub 16-bit-only (i386)

Alexander van Heukelum
2007-05-05T17:00:45Z

Hi!

The x86 bzImage contains a stub to inform people that it is not possible
any more to run a Linux kernel by catting it to a floppy and then
booting from it. This was meant to be all 16-bit code. The first
instruction, however, ended up as being coded as a 16:32-bit far jump. I
assume the intention was a 16:16-bit far jump.

This patch changes only i386.

Greetings,
Alexander

Signed-off-by: Alexander van Heukelum <heukelum@mailshack.com>

---

diff --git a/arch/i386/boot/bootsect.S b/arch/i386/boot/bootsect.S
index 011b7a4..ae9df0d 100644
--- a/arch/i386/boot/bootsect.S
+++ b/arch/i386/boot/bootsect.S
@@ -44,7 +44,7 @@ #endif
_start:

# Normalize the start address
- jmpl $BOOTSEG, $start2
+ jmpw $BOOTSEG, $start2

start2:
movw %cs, %ax