[PATCH] Load bzImages smaller than 32 KiB
horms at verge.net.au
Tue Jun 12 21:33:36 EDT 2012
On Tue, Jun 05, 2012 at 07:46:07PM -0400, Eric Biggers wrote:
> Allow bzImages smaller than 32KiB to be kexec'ed.
> The current code will fail to load a bzImage smaller than 32768 bytes (sizeof
> struct x86_linux_header), but the 'memdisk' program that comes with syslinux is
> only about 26 KiB. This patch changes the minimum size to 1024 bytes (2
> sectors), which appears to be the limit that syslinux enforces.
> Removed the "tail" field of struct x86_linux_header because it doesn't seem to
> actually be used (is there a reason for it?).
> Also, note that bzImage_probe() was incorrectly using `sizeof (header)', even
> though header is a pointer.
> Signed-off-by: Eric Biggers <ebiggers3 at gmail.com>
More information about the kexec