[PATCH] x86, boot: fix warning on 32-bit builds

[Kees Cook <keescook@chromium.org>]

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>
---
 arch/x86/boot/compressed/aslr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/boot/compressed/aslr.c b/arch/x86/boot/compressed/aslr.c
index d39189ba7f8e..f302dc45ce08 100644
--- 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))
-- 
1.9.1


-- 
Kees Cook
Chrome OS Security