On Tue, Sep 03, 2019 at 12:02:38AM +0100, Valentin Schneider wrote:

struct task_struct {
	struct thread_info         thread_info;          /*     0    24 */
	volatile int               state;                /*    24     4 */

	/* XXX 4 bytes hole, try to pack */

	void *                     stack;                /*    32     8 */

Though seeing as this is also the boundary of the randomized layout we can't
really do much better without changing the boundary itself. So much for
cacheline use :/

Cacheline use of task_struct is pretty hopeless because of all the ifdefs.