Commit 8cc2dd63 authored by Sean Christopherson's avatar Sean Christopherson Committed by Paolo Bonzini
Browse files

KVM: selftests: Add "zero" testcase to set_memory_region_test 



Add a testcase for running a guest with no memslots to the memory region
test.  The expected result on x86_64 is that the guest will trigger an
internal KVM error due to the initial code fetch encountering a
non-existent memslot and resulting in an emulation failure.

Signed-off-by: default avatarSean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200410231707.7128-9-sean.j.christopherson@intel.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 4cd94d12

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

+24 −0
Original line number Diff line number Diff line
@@ -289,6 +289,28 @@ static void test_delete_memory_region(void) 
	kvm_vm_free(vm);

}



static void test_zero_memory_regions(void)

{

	struct kvm_run *run;

	struct kvm_vm *vm;



	pr_info("Testing KVM_RUN with zero added memory regions\n");



	vm = vm_create(VM_MODE_DEFAULT, 0, O_RDWR);

	vm_vcpu_add(vm, VCPU_ID);



	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);

	TEST_ASSERT(run->exit_reason == KVM_EXIT_INTERNAL_ERROR,

		    "Unexpected exit_reason = %u\n", run->exit_reason);



	kvm_vm_free(vm);

}



int main(int argc, char *argv[])

{

	int i, loops;
@@ -296,6 +318,8 @@ int main(int argc, char *argv[]) 
	/* Tell stdout not to buffer its content */

	setbuf(stdout, NULL);



	test_zero_memory_regions();



	if (argc > 1)

		loops = atoi(argv[1]);

	else