Commit f3032fcc authored by Andrew Jones's avatar Andrew Jones Committed by Marc Zyngier
Browse files

KVM: arm64: selftests: get-reg-list: Provide config selection option 



Add a new command line option that allows the user to select a specific
configuration, e.g. --config=sve will give the sve config. Also provide
help text and the --help/-h options.

Signed-off-by: default avatarAndrew Jones <drjones@redhat.com>
Reviewed-by: default avatarRicardo Koller <ricarkol@google.com>
Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210531103344.29325-4-drjones@redhat.com
parent 94e9223c

tools/testing/selftests/kvm/aarch64/get-reg-list.c

+53 −3
Original line number Diff line number Diff line
@@ -539,6 +539,52 @@ static void run_test(struct vcpu_config *c) 
	kvm_vm_free(vm);

}



static void help(void)

{

	struct vcpu_config *c;

	int i;



	printf(

	"\n"

	"usage: get-reg-list [--config=<selection>] [--list] [--list-filtered] [--core-reg-fixup]\n\n"

	" --config=<selection>        Used to select a specific vcpu configuration for the test/listing\n"

	"                             '<selection>' may be\n");



	for (i = 0; i < vcpu_configs_n; ++i) {

		c = vcpu_configs[i];

		printf(

	"                               '%s'\n", config_name(c));

	}



	printf(

	"\n"

	" --list                      Print the register list rather than test it (requires --config)\n"

	" --list-filtered             Print registers that would normally be filtered out (requires --config)\n"

	" --core-reg-fixup            Needed when running on old kernels with broken core reg listings\n"

	"\n"

	);

}



static struct vcpu_config *parse_config(const char *config)

{

	struct vcpu_config *c;

	int i;



	if (config[8] != '=')

		help(), exit(1);



	for (i = 0; i < vcpu_configs_n; ++i) {

		c = vcpu_configs[i];

		if (strcmp(config_name(c), &config[9]) == 0)

			break;

	}



	if (i == vcpu_configs_n)

		help(), exit(1);



	return c;

}



int main(int ac, char **av)

{

	struct vcpu_config *c, *sel = NULL;
@@ -547,20 +593,24 @@ int main(int ac, char **av) 
	for (i = 1; i < ac; ++i) {

		if (strcmp(av[i], "--core-reg-fixup") == 0)

			fixup_core_regs = true;

		else if (strncmp(av[i], "--config", 8) == 0)

			sel = parse_config(av[i]);

		else if (strcmp(av[i], "--list") == 0)

			print_list = true;

		else if (strcmp(av[i], "--list-filtered") == 0)

			print_filtered = true;

		else if (strcmp(av[i], "--help") == 0 || strcmp(av[1], "-h") == 0)

			help(), exit(0);

		else

			TEST_FAIL("Unknown option: %s\n", av[i]);

			help(), exit(1);

	}



	if (print_list || print_filtered) {

		/*

		 * We only want to print the register list of a single config.

		 * TODO: Add command line support to pick which config.

		 */

		sel = vcpu_configs[0];

		if (!sel)

			help(), exit(1);

	}



	for (i = 0; i < vcpu_configs_n; ++i) {