Commit 3a31518a authored by Michael Ellerman's avatar Michael Ellerman
Browse files

selftests/powerpc: Skip security tests on older CPUs 



Both these tests use PMU events that only work on newer CPUs, so skip
them on older CPUs.

Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200819015727.1977134-6-mpe@ellerman.id.au
parent 4c3c3c50

tools/testing/selftests/powerpc/security/rfi_flush.c

+3 −0
Original line number Diff line number Diff line
@@ -89,6 +89,9 @@ int rfi_flush_test(void) 


	SKIP_IF(geteuid() != 0);



	// The PMU event we use only works on Power7 or later

	SKIP_IF(!have_hwcap(PPC_FEATURE_ARCH_2_06));



	if (read_debugfs_file("powerpc/rfi_flush", &rfi_flush_org)) {

		perror("Unable to read powerpc/rfi_flush debugfs file");

		SKIP_IF(1);

tools/testing/selftests/powerpc/security/spectre_v2.c

+3 −0
Original line number Diff line number Diff line
@@ -134,6 +134,9 @@ int spectre_v2_test(void) 
	s64 miss_percent;

	bool is_p9;



	// The PMU events we use only work on Power8 or later

	SKIP_IF(!have_hwcap2(PPC_FEATURE2_ARCH_2_07));



	state = get_sysfs_state();

	if (state == UNKNOWN) {

		printf("Error: couldn't determine spectre_v2 mitigation state?\n");