"Naveen N. Rao" <[email protected]> writes:
> diff --git a/tools/testing/selftests/powerpc/security/rfi_flush.c
> b/tools/testing/selftests/powerpc/security/rfi_flush.c
> new file mode 100644
> index 000000000000..a20fe8eca161
> --- /dev/null
> +++ b/tools/testing/selftests/powerpc/security/rfi_flush.c
> @@ -0,0 +1,132 @@
...
> +
> +int rfi_flush_test(void)
> +{
> + char *p;
> + int repetitions = 10;
> + int fd, passes = 0, iter, rc = 0;
> + struct perf_event_read v;
> + uint64_t l1d_misses_total = 0;
> + unsigned long iterations = 100000, zero_size = 24*1024;
> + int rfi_flush_org, rfi_flush;
> +
> + SKIP_IF(geteuid() != 0);
> +
> + if (read_debugfs_file("powerpc/rfi_flush", &rfi_flush_org)) {
> + perror("error reading powerpc/rfi_flush debugfs file");
> + printf("unable to determine current rfi_flush setting");
> + return 1;
> + }
This leads to a hard error on old kernels, which I don't want (breaks my CI).
So I changed it to:
if (read_debugfs_file("powerpc/rfi_flush", &rfi_flush_org)) {
perror("Unable to read powerpc/rfi_flush debugfs file");
SKIP_IF(1);
}
cheers
