From: Sean Christopherson Date: Fri, 10 Apr 2020 23:17:05 +0000 (-0700) Subject: KVM: selftests: Add "zero" testcase to set_memory_region_test X-Git-Tag: v5.10.7~2472^2~212 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8cc2dd637b890d75613387daf57af7e8f3a32e33;p=platform%2Fkernel%2Flinux-rpi.git 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: Sean Christopherson Message-Id: <20200410231707.7128-9-sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini --- diff --git a/tools/testing/selftests/kvm/x86_64/set_memory_region_test.c b/tools/testing/selftests/kvm/x86_64/set_memory_region_test.c index b556024..c274ce6 100644 --- a/tools/testing/selftests/kvm/x86_64/set_memory_region_test.c +++ b/tools/testing/selftests/kvm/x86_64/set_memory_region_test.c @@ -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