selftests/x86/syscall_nt: Add more flag combinations

Add EFLAGS.AC to the mix.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/12924e2fe2c5826568b7fc9436d85ca7f5eb1743.1593191971.git.luto@kernel.org

diff --git a/tools/testing/selftests/x86/syscall_nt.c b/tools/testing/selftests/x86/syscall_nt.c
index 02309a1..f060534 100644 (file)
--- a/tools/testing/selftests/x86/syscall_nt.c
+++ b/tools/testing/selftests/x86/syscall_nt.c
@@ -73,6 +73,12 @@ int main(void)
        printf("[RUN]\tSet NT and issue a syscall\n");
        do_it(X86_EFLAGS_NT);
 
+       printf("[RUN]\tSet AC and issue a syscall\n");
+       do_it(X86_EFLAGS_AC);
+
+       printf("[RUN]\tSet NT|AC and issue a syscall\n");
+       do_it(X86_EFLAGS_NT | X86_EFLAGS_AC);
+
        /*
         * Now try it again with TF set -- TF forces returns via IRET in all
         * cases except non-ptregs-using 64-bit full fast path syscalls.
@@ -80,8 +86,17 @@ int main(void)
 
        sethandler(SIGTRAP, sigtrap, 0);
 
+       printf("[RUN]\tSet TF and issue a syscall\n");
+       do_it(X86_EFLAGS_TF);
+
        printf("[RUN]\tSet NT|TF and issue a syscall\n");
        do_it(X86_EFLAGS_NT | X86_EFLAGS_TF);
 
+       printf("[RUN]\tSet AC|TF and issue a syscall\n");
+       do_it(X86_EFLAGS_AC | X86_EFLAGS_TF);
+
+       printf("[RUN]\tSet NT|AC|TF and issue a syscall\n");
+       do_it(X86_EFLAGS_NT | X86_EFLAGS_AC | X86_EFLAGS_TF);
+
        return nerrs == 0 ? 0 : 1;
 }