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#ifndef _ASM_STACKPROTECTOR_H
#define _ASM_STACKPROTECTOR_H 1
/*
* Initialize the stackprotector canary value.
*
* NOTE: this must only be called from functions that never return,
* and it must always be inlined.
*/
static __always_inline void boot_init_stack_canary(void)
{
/*
* If we're the non-boot CPU, nothing set the PDA stack
* canary up for us - and if we are the boot CPU we have
* a 0 stack canary. This is a good place for updating
* it, as we wont ever return from this function (so the
* invalid canaries already on the stack wont ever
* trigger):
*/
current->stack_canary = get_random_int();
write_pda(stack_canary, current->stack_canary);
}
#endif
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