1 // SPDX-License-Identifier: GPL-2.0
14 int main(int argc, char **argv) {
17 char msr_file_name[64];
23 cpu = strtol(argv[1], (char **) NULL, 10);
28 sprintf(msr_file_name, "/dev/cpu/%d/msr", cpu);
29 fd = open(msr_file_name, O_RDONLY);
32 perror("Failed to open");
36 pread(fd, &msr, sizeof(msr), 0x199);
38 printf("msr 0x199: 0x%llx\n", msr);