diff options
authorArnd Bergmann2018-02-15 09:16:57 -0600
committerGreg Kroah-Hartman2018-02-22 08:45:01 -0600
commit4b35dcb5e048cde1a68603d5ad2d8ccaf3fb1e4e (patch)
parentbb18512819952a468c8f618fbf0b9a470a854a06 (diff)
x86: fix build warnign with 32-bit PAE
I ran into a 4.9 build warning in randconfig testing, starting with the KAISER patches: arch/x86/kernel/ldt.c: In function 'alloc_ldt_struct': arch/x86/include/asm/pgtable_types.h:208:24: error: large integer implicitly truncated to unsigned type [-Werror=overflow] #define __PAGE_KERNEL (__PAGE_KERNEL_EXEC | _PAGE_NX) ^ arch/x86/kernel/ldt.c:81:6: note: in expansion of macro '__PAGE_KERNEL' __PAGE_KERNEL); ^~~~~~~~~~~~~ I originally ran into this last year when the patches were part of linux-next, and tried to work around it by using the proper 'pteval_t' types consistently, but that caused additional problems. This takes a much simpler approach, and makes the argument type of the dummy helper always 64-bit, which is wide enough for any page table layout and won't hurt since this call is just an empty stub anyway. Fixes: 8f0baadf2bea ("kaiser: merged update") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Kees Cook <keescook@chromium.org> Acked-by: Hugh Dickins <hughd@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/kaiser.h b/include/linux/kaiser.h
index 58c55b1589d0..b56c19010480 100644
--- a/include/linux/kaiser.h
+++ b/include/linux/kaiser.h
@@ -32,7 +32,7 @@ static inline void kaiser_init(void)
32{ 32{
33} 33}
34static inline int kaiser_add_mapping(unsigned long addr, 34static inline int kaiser_add_mapping(unsigned long addr,
35 unsigned long size, unsigned long flags) 35 unsigned long size, u64 flags)
36{ 36{
37 return 0; 37 return 0;
38} 38}