x86, boot, kaslr: Fix nuisance warning on 32-bit builds

Building 32-bit threw a warning on kASLR enabled builds:

arch/x86/boot/compressed/aslr.c: In function ‘mem_avoid_overlap’:
arch/x86/boot/compressed/aslr.c:198:17: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
   avoid.start = (u64)ptr;
                 ^

This fixes the warning; unsigned long should have been used here.

Signed-off-by: Kees Cook <keescook@chromium.org>
Link: http://lkml.kernel.org/r/20141001183632.GA11431@www.outflux.net
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

diff --git a/arch/x86/boot/compressed/aslr.c b/arch/x86/boot/compressed/aslr.c
index d39189b..f302dc4 100644 (file)
--- a/arch/x86/boot/compressed/aslr.c
+++ b/arch/x86/boot/compressed/aslr.c
@@ -195,7 +195,7 @@ static bool mem_avoid_overlap(struct mem_vector *img)
        while (ptr) {
                struct mem_vector avoid;
 
-               avoid.start = (u64)ptr;
+               avoid.start = (unsigned long)ptr;
                avoid.size = sizeof(*ptr) + ptr->len;
 
                if (mem_overlaps(img, &avoid))