20 Nov
2024
20 Nov
'24
10:22 a.m.
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.