[PATCH] Make the bzImage format self-terminating

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Frank Sorenson <frank@tuxrocks.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 4 insertions, 2 deletions

diff --git a/arch/x86_64/boot/setup.S b/arch/x86_64/boot/setup.S
index ff58b2832b75..12ea0b6c52e2 100644
--- a/arch/x86_64/boot/setup.S
+++ b/arch/x86_64/boot/setup.S
@@ -81,7 +81,7 @@ start:
 # This is the setup header, and it must start at %cs:2 (old 0x9020:2)
 
                 .ascii  "HdrS"          # header signature
-                .word   0x0203          # header version number (>= 0x0105)
+                .word   0x0204          # header version number (>= 0x0105)
                                         # or else old loadlin-1.5 will fail)
 realmode_swtch: .word   0, 0            # default_switch, SETUPSEG
 start_sys_seg:  .word   SYSSEG
diff --git a/arch/x86_64/boot/tools/build.c b/arch/x86_64/boot/tools/build.c
index 18b5bac1c428..c44f5e2ec100 100644
--- a/arch/x86_64/boot/tools/build.c
+++ b/arch/x86_64/boot/tools/build.c
@@ -178,7 +178,9 @@ int main(int argc, char ** argv)
                 die("Output: seek failed");
         buf[0] = (sys_size & 0xff);
         buf[1] = ((sys_size >> 8) & 0xff);
-        if (write(1, buf, 2) != 2)
+        buf[2] = ((sys_size >> 16) & 0xff);
+        buf[3] = ((sys_size >> 24) & 0xff);
+        if (write(1, buf, 4) != 4)
                 die("Write of image length failed");
 
         return 0;                                           /* Everything is OK */