x86/kernel/shstk.c

31 static bool features_enabled(unsigned long features)
36 static void features_set(unsigned long features)
41 static void features_clr(unsigned long features)
50 static int create_rstor_token(unsigned long ssp, unsigned long *token_addr)
52 	unsigned long addr;
100 static unsigned long alloc_shstk(unsigned long addr, unsigned long size,
101 				 unsigned long token_offset, bool set_res_tok)
105 	unsigned long mapped_addr, unused;
127 static unsigned long adjust_shstk_size(unsigned long size)
132 	return PAGE_ALIGN(min_t(unsigned long long, rlimit(RLIMIT_STACK), SZ_4G));
160 	unsigned long addr, size;
194 unsigned long shstk_alloc_thread_stack(struct task_struct *tsk, unsigned long clone_flags,
195 				       unsigned long stack_size)
198 	unsigned long addr, size;
236 static unsigned long get_user_shstk_addr(void)
238 	unsigned long long ssp;
265 static int get_shstk_data(unsigned long *data, unsigned long __user *addr)
267 	unsigned long ldata;
280 static int shstk_push_sigframe(unsigned long *ssp)
282 	unsigned long target_ssp = *ssp;
295 static int shstk_pop_sigframe(unsigned long *ssp)
298 	unsigned long token_addr;
316 	err = get_shstk_data(&token_addr, (unsigned long __user *)*ssp);
350 	unsigned long ssp;
383 	unsigned long ssp;
505 SYSCALL_DEFINE3(map_shadow_stack, unsigned long, addr, unsigned long, size, unsigned int, flags)
508 	unsigned long aligned_size;
535 long shstk_prctl(struct task_struct *task, int option, unsigned long arg2)
537 	unsigned long features = arg2;
540 		return put_user(task->thread.features, (unsigned long __user *)arg2);