KVM: selftests: Make set_memory_region_test common to all architectures

Make set_memory_region_test available on all architectures by wrapping
the bits that are x86-specific in ifdefs.  A future testcase
to create the maximum number of memslots will be architecture
agnostic.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200410231707.7128-10-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

tools/testing/selftests/kvm/.gitignore

@@ -6,7 +6,6 @@
 /x86_64/hyperv_cpuid
 /x86_64/mmio_warning_test
 /x86_64/platform_info_test
-/x86_64/set_memory_region_test
 /x86_64/set_sregs_test
 /x86_64/smm_test
 /x86_64/state_test
@@ -21,4 +20,5 @@
 /demand_paging_test
 /dirty_log_test
 /kvm_create_max_vcpus
+/set_memory_region_test
 /steal_time

tools/testing/selftests/kvm/Makefile

@@ -17,7 +17,6 @@ TEST_GEN_PROGS_x86_64 += x86_64/evmcs_test
 TEST_GEN_PROGS_x86_64 += x86_64/hyperv_cpuid
 TEST_GEN_PROGS_x86_64 += x86_64/mmio_warning_test
 TEST_GEN_PROGS_x86_64 += x86_64/platform_info_test
-TEST_GEN_PROGS_x86_64 += x86_64/set_memory_region_test
 TEST_GEN_PROGS_x86_64 += x86_64/set_sregs_test
 TEST_GEN_PROGS_x86_64 += x86_64/smm_test
 TEST_GEN_PROGS_x86_64 += x86_64/state_test
@@ -32,12 +31,14 @@ TEST_GEN_PROGS_x86_64 += clear_dirty_log_test
 TEST_GEN_PROGS_x86_64 += demand_paging_test
 TEST_GEN_PROGS_x86_64 += dirty_log_test
 TEST_GEN_PROGS_x86_64 += kvm_create_max_vcpus
+TEST_GEN_PROGS_x86_64 += set_memory_region_test
 TEST_GEN_PROGS_x86_64 += steal_time
 
 TEST_GEN_PROGS_aarch64 += clear_dirty_log_test
 TEST_GEN_PROGS_aarch64 += demand_paging_test
 TEST_GEN_PROGS_aarch64 += dirty_log_test
 TEST_GEN_PROGS_aarch64 += kvm_create_max_vcpus
+TEST_GEN_PROGS_aarch64 += set_memory_region_test
 TEST_GEN_PROGS_aarch64 += steal_time
 
 TEST_GEN_PROGS_s390x = s390x/memop
@@ -46,6 +47,7 @@ TEST_GEN_PROGS_s390x += s390x/sync_regs_test
 TEST_GEN_PROGS_s390x += demand_paging_test
 TEST_GEN_PROGS_s390x += dirty_log_test
 TEST_GEN_PROGS_s390x += kvm_create_max_vcpus
+TEST_GEN_PROGS_s390x += set_memory_region_test
 
 TEST_GEN_PROGS += $(TEST_GEN_PROGS_$(UNAME_M))
 LIBKVM += $(LIBKVM_$(UNAME_M))

tools/testing/selftests/kvm/x86_64/set_memory_region_test.c → tools/testing/selftests/kvm/set_memory_region_test.c

@@ -18,6 +18,7 @@
 
 #define VCPU_ID 0
 
+#ifdef __x86_64__
 /*
  * Somewhat arbitrary location and slot, intended to not overlap anything.  The
  * location and size are specifically 2mb sized/aligned so that the initial
@@ -301,7 +302,6 @@ static void test_zero_memory_regions(void)
 
 	TEST_ASSERT(!ioctl(vm_get_fd(vm), KVM_SET_NR_MMU_PAGES, 64),
 		    "KVM_SET_NR_MMU_PAGES failed, errno = %d\n", errno);
-
 	vcpu_run(vm, VCPU_ID);
 
 	run = vcpu_state(vm, VCPU_ID);
@@ -310,14 +310,22 @@ static void test_zero_memory_regions(void)
 
 	kvm_vm_free(vm);
 }
+#endif /* __x86_64__ */
 
 int main(int argc, char *argv[])
 {
+#ifdef __x86_64__
 	int i, loops;
+#endif
 
 	/* Tell stdout not to buffer its content */
 	setbuf(stdout, NULL);
 
+#ifdef __x86_64__
+	/*
+	 * FIXME: the zero-memslot test fails on aarch64 and s390x because
+	 * KVM_RUN fails with ENOEXEC or EFAULT.
+	 */
 	test_zero_memory_regions();
 
 	if (argc > 1)
@@ -332,6 +340,7 @@ int main(int argc, char *argv[])
 	pr_info("Testing DELETE of in-use region, %d loops\n", loops);
 	for (i = 0; i < loops; i++)
 		test_delete_memory_region();
+#endif
 
 	return 0;
 }