[PATCH 1/3] kexec: align initrd when no --image-size

[Dave Young]

On 01/22/14 at 06:52pm, Wang Nan wrote:
> Before this patch, when no --image-size passed, initrd_base is caculated using
> base + len * 4, which is unaligned, and unable to pass check in
> add_segment_phys_virt():
> 
> 	if (base & (pagesize -1)) {
> 		die("Base address: 0x%lx is not page aligned\n", base);
> 	}
> 
> Signed-off-by: Wang Nan <wangnan0 at huawei.com>
> Cc: Simon Horman <horms at verge.net.au>
> Cc: Dave Young <dyoung at redhat.com>
> Cc: Geng Hui <hui.geng at huawei.com>
> ---
>  kexec/arch/arm/kexec-zImage-arm.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/kexec/arch/arm/kexec-zImage-arm.c b/kexec/arch/arm/kexec-zImage-arm.c
> index 792187a..4547765 100644
> --- a/kexec/arch/arm/kexec-zImage-arm.c
> +++ b/kexec/arch/arm/kexec-zImage-arm.c
> @@ -351,7 +351,7 @@ int zImage_arm_load(int argc, char **argv, const char *buf, off_t len,
>  	} else {
>  		/* Otherwise, assume the maximum kernel compression ratio
>  		 * is 4, and just to be safe, place ramdisk after that */
> -		initrd_base = base + len * 4;
> +		initrd_base =  base + _ALIGN(len * 4, 4096);

get_page_size should be used instead of 4096, otherwise it looks good to me.

Thanks
Dave