[PATCH 1/2] arm: plug a zImage corner case

[Simon Horman]

On Thu, Jul 07, 2016 at 03:01:19PM +0100, Russell King wrote:
> If a zImage is built with ARM_APPENDED_DTB enabled, the zImage will
> look at the word following the zImage and check whether it contains
> the DTB magic number.
> 
> Generally, kexec will clear the destination pages before copying the
> zImage, but there is a corner case where the zImage is a multiple of
> the page size, where the following page will not be touched.  Should
> the first word in this page contain the DTB magic number, the data
> following will be interpreted as a DTB image.
> 
> In order to make this bullet-proof, we must always initialise the word
> following the zImage.  Arrange this by specifying the zImage memory
> size one word bigger than the buffer size.
> 
> Signed-off-by: Russell King <rmk at armlinux.org.uk>

Thanks, I have applied this and the next patch.