On Tue, Nov 19, 2024 at 04:05:32PM -0800, Josh Poimboeuf wrote: > On Tue, Nov 19, 2024 at 04:34:53PM +0100, Valentin Schneider wrote: > > +++ b/include/linux/jump_label.h > > @@ -200,7 +200,8 @@ struct module; > > #define JUMP_TYPE_FALSE 0UL > > #define JUMP_TYPE_TRUE 1UL > > #define JUMP_TYPE_LINKED 2UL > > -#define JUMP_TYPE_MASK 3UL > > +#define JUMP_TYPE_FORCEFUL 4UL > > +#define JUMP_TYPE_MASK 7UL > > Hm, I don't think we can (ab)use this pointer bit on 32-bit arches, as > the address could be 4 byte aligned? Right, you can force the alignment of the thing, workqueues do similar hacks to get more bits.
