MMFR0 test module

mmfr0_test.c

#include <linux/module.h>
#include <linux/kernel.h>

static int init_mrs(void) {
        u64 mmfr0_el1;

        printk(KERN_INFO "MRS_TEST module initialized.\n");

        asm("mrs %0, id_aa64mmfr0_el1" : "=r" (mmfr0_el1));
        printk("ID_AA64MMFR0_EL1: 0x%016llx\n", mmfr0_el1);

        return 0;
}

static void exit_mrs(void) {
        printk(KERN_INFO "MRS_TEST module unload.\n");
}

MODULE_LICENSE("GPLv2");

module_init(init_mrs);
module_exit(exit_mrs);