Re: [RFC PATCH v2 12/31] kvx: Add other common headers

+#include <linux/random.h> +#include <linux/version.h> + +extern unsigned long __stack_chk_guard; + +/* + * 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) +{ + unsigned long canary; + + /* Try to get a semi random initial value. */ + get_random_bytes(&canary, sizeof(canary)); + canary ^= LINUX_VERSION_CODE; + canary &= CANARY_MASK; + + current->stack_canary = canary; + __stack_chk_guard = current->stack_canary; +}

+#define get_cycles get_cycles + +#include <asm/sfr.h> +#include <asm-generic/timex.h> + +static inline cycles_t get_cycles(void) +{ + return kvx_sfr_get(PM0); +}