On Sun, Feb 28, 2016 at 09:28:46PM -0800, Andy Lutomirski wrote:
> Setting TF prevents fastpath returns in most cases, which causes the
> test to fail on 32-bit kernels because 32-bit kernels do not, in
> fact, handle NT correctly on SYSENTER entries.
>
> The next patch will fix 32-bit kernels.
>
> Signed-off-by: Andy Lutomirski <l...@kernel.org>
> ---
> tools/testing/selftests/x86/syscall_nt.c | 57
> +++++++++++++++++++++++++++-----
> 1 file changed, 49 insertions(+), 8 deletions(-)
>
> diff --git a/tools/testing/selftests/x86/syscall_nt.c
> b/tools/testing/selftests/x86/syscall_nt.c
> index 60c06af4646a..a6ceff86c199 100644
> --- a/tools/testing/selftests/x86/syscall_nt.c
> +++ b/tools/testing/selftests/x86/syscall_nt.c
...
> +static void do_it(unsigned long extraflags)
> +{
> + unsigned long flags;
> +
> + set_eflags(get_eflags() | extraflags);
> syscall(SYS_getpid);
> - if (get_eflags() & X86_EFLAGS_NT) {
> - printf("[OK]\tThe syscall worked and NT is still set\n");
> - return 0;
> + flags = get_eflags();
> + if ((flags & extraflags) == extraflags) {
> + printf("[OK]\tThe syscall worked and flags are still set\n");
> } else {
> - printf("[FAIL]\tThe syscall worked but NT was cleared\n");
> - return 1;
> + printf("[FAIL]\tThe syscall worked but flags were cleared
> (flags = 0x%lx but expected 0x%lx set)\n",
> + flags, extraflags);
> + nerrs++;
> }
> }
> +
> +int main()
ERROR: Bad function definition - int main() should probably be int main(void)
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
