Arnd Bergmann 4b35dcb5e0
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: 8f0baadf2barnd@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 >
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Arnd Bergmann
4b35dcb5e0