On Tue, 15 Feb 2022 08:48:24 +0100 Thomas Huth thuth@redhat.com wrote:
Commit 2c212e1baedc ("KVM: s390: Return error on SIDA memop on normal guest") fixed the behavior of the SIDA memops for normal guests. It would be nice to have a way to test whether the current kernel has the fix applied or not. Thus add a check to the KVM selftests for these two memops.
Signed-off-by: Thomas Huth thuth@redhat.com
looks rather straightforward
Reviewed-by: Claudio Imbrenda imbrenda@linux.ibm.com
tools/testing/selftests/kvm/s390x/memop.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/tools/testing/selftests/kvm/s390x/memop.c b/tools/testing/selftests/kvm/s390x/memop.c index 9f49ead380ab..d19c3ffdea3f 100644 --- a/tools/testing/selftests/kvm/s390x/memop.c +++ b/tools/testing/selftests/kvm/s390x/memop.c @@ -160,6 +160,21 @@ int main(int argc, char *argv[]) run->psw_mask &= ~(3UL << (63 - 17)); /* Disable AR mode */ vcpu_run(vm, VCPU_ID); /* Run to sync new state */
- /* Check that the SIDA calls are rejected for non-protected guests */
- ksmo.gaddr = 0;
- ksmo.flags = 0;
- ksmo.size = 8;
- ksmo.op = KVM_S390_MEMOP_SIDA_READ;
- ksmo.buf = (uintptr_t)mem1;
- ksmo.sida_offset = 0x1c0;
- rv = _vcpu_ioctl(vm, VCPU_ID, KVM_S390_MEM_OP, &ksmo);
- TEST_ASSERT(rv == -1 && errno == EINVAL,
"ioctl does not reject SIDA_READ in non-protected mode");- ksmo.op = KVM_S390_MEMOP_SIDA_WRITE;
- rv = _vcpu_ioctl(vm, VCPU_ID, KVM_S390_MEM_OP, &ksmo);
- TEST_ASSERT(rv == -1 && errno == EINVAL,
"ioctl does not reject SIDA_WRITE in non-protected mode");- kvm_vm_free(vm);
return 0;