[PATCH 3/6] KVM: arm64: selftests: get-reg-list: Prepare to run multiple configs at once

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We don't want to have to create a new binary for each vcpu config, so
prepare to run the test for multiple vcpu configs in a single binary.
We do this by factoring out the test from main() and then looping over
configs. When given '--list' we still never print more than a single
reg-list for a single vcpu config though, because it would be confusing
otherwise.

No functional change intended.

Signed-off-by: Andrew Jones <drjones@xxxxxxxxxx>
---
 .../selftests/kvm/aarch64/get-reg-list.c      | 72 +++++++++++++------
 1 file changed, 49 insertions(+), 23 deletions(-)

diff --git a/tools/testing/selftests/kvm/aarch64/get-reg-list.c b/tools/testing/selftests/kvm/aarch64/get-reg-list.c
index fbbeee634722..68d3be86d490 100644
--- a/tools/testing/selftests/kvm/aarch64/get-reg-list.c
+++ b/tools/testing/selftests/kvm/aarch64/get-reg-list.c
@@ -54,8 +54,7 @@ struct vcpu_config {
 	struct reg_sublist sublists[];
 };
 
-static struct vcpu_config vregs_config;
-static struct vcpu_config sve_config;
+static struct vcpu_config *vcpu_configs[];
 
 #define for_each_sublist(c, s)							\
 	for ((s) = &(c)->sublists[0]; (s)->regs; ++(s))
@@ -386,35 +385,18 @@ static void print_reg_list(struct vcpu_config *c, bool print_list, bool print_fi
 			print_reg(c, id);
 	}
 	putchar('\n');
+
+	free(reg_list);
+	kvm_vm_free(vm);
 }
 
-int main(int ac, char **av)
+static void run_test(struct vcpu_config *c)
 {
-	struct vcpu_config *c = reg_list_sve() ? &sve_config : &vregs_config;
 	int new_regs = 0, missing_regs = 0, i, n;
 	int failed_get = 0, failed_set = 0, failed_reject = 0;
-	bool print_list = false, print_filtered = false;
 	struct kvm_vm *vm;
 	struct reg_sublist *s;
 
-	check_supported(c);
-
-	for (i = 1; i < ac; ++i) {
-		if (strcmp(av[i], "--core-reg-fixup") == 0)
-			fixup_core_regs = true;
-		else if (strcmp(av[i], "--list") == 0)
-			print_list = true;
-		else if (strcmp(av[i], "--list-filtered") == 0)
-			print_filtered = true;
-		else
-			TEST_FAIL("Unknown option: %s\n", av[i]);
-	}
-
-	if (print_list || print_filtered) {
-		print_reg_list(c, print_list, print_filtered);
-		return 0;
-	}
-
 	vm = vm_create(VM_MODE_DEFAULT, DEFAULT_GUEST_PHY_PAGES, O_RDWR);
 	reg_list_init(vm, c);
 
@@ -514,6 +496,45 @@ int main(int ac, char **av)
 		    "%d registers failed get; %d registers failed set; %d registers failed reject",
 		    c->name, missing_regs, failed_get, failed_set, failed_reject);
 
+	blessed_n = 0;
+	free(blessed_reg);
+	free(reg_list);
+	kvm_vm_free(vm);
+}
+
+int main(int ac, char **av)
+{
+	struct vcpu_config *c;
+	bool print_list = false, print_filtered = false;
+	int i;
+
+	for (i = 1; i < ac; ++i) {
+		if (strcmp(av[i], "--core-reg-fixup") == 0)
+			fixup_core_regs = true;
+		else if (strcmp(av[i], "--list") == 0)
+			print_list = true;
+		else if (strcmp(av[i], "--list-filtered") == 0)
+			print_filtered = true;
+		else
+			TEST_FAIL("Unknown option: %s\n", av[i]);
+	}
+
+	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.
+		 */
+		c = vcpu_configs[0];
+		check_supported(c);
+		print_reg_list(c, print_list, print_filtered);
+		return 0;
+	}
+
+	for (i = 0, c = vcpu_configs[0]; c; ++i, c = vcpu_configs[i]) {
+		check_supported(c);
+		run_test(c);
+	}
+
 	return 0;
 }
 
@@ -911,3 +932,8 @@ static struct vcpu_config sve_config = {
 	{0},
 	},
 };
+
+static struct vcpu_config *vcpu_configs[] = {
+	reg_list_sve() ? &sve_config : &vregs_config,
+	NULL
+};
-- 
2.30.2




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