[PATCH] ppc64: Fix zImage wrapper incorrect size to flush_cache()

This patch fixes a bug in the ppc64 zImage wrapper causing it to pass an
incorrect size to flush_cache() when flushing the data and instruction
caches prior to jumping to the kernel entry.  This causes crashes on
firmare environment that do strict MMU mapping only of actually allocated
areas
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/ppc64/boot/main.c

@@ -200,7 +200,7 @@ void start(unsigned long a1, unsigned long a2, void *promptr)
 	vmlinux.addr += (unsigned long)elf64ph->p_offset;
 	vmlinux.size -= (unsigned long)elf64ph->p_offset;
 
-	flush_cache((void *)vmlinux.addr, vmlinux.memsize);
+	flush_cache((void *)vmlinux.addr, vmlinux.size);
 
 	if (a1)
 		printf("initrd head: 0x%lx\n\r", *((u32 *)initrd.addr));