diff options
Diffstat (limited to 'tools/testing/selftests/kvm/s390x/memop.c')
| -rw-r--r-- | tools/testing/selftests/kvm/s390x/memop.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/s390x/memop.c b/tools/testing/selftests/kvm/s390x/memop.c index bb3ca9a5d7..48cb910e66 100644 --- a/tools/testing/selftests/kvm/s390x/memop.c +++ b/tools/testing/selftests/kvm/s390x/memop.c @@ -375,6 +375,32 @@ static void test_copy(void) kvm_vm_free(t.kvm_vm); } +static void test_copy_access_register(void) +{ + struct test_default t = test_default_init(guest_copy); + + HOST_SYNC(t.vcpu, STAGE_INITED); + + prepare_mem12(); + t.run->psw_mask &= ~(3UL << (63 - 17)); + t.run->psw_mask |= 1UL << (63 - 17); /* Enable AR mode */ + + /* + * Primary address space gets used if an access register + * contains zero. The host makes use of AR[1] so is a good + * candidate to ensure the guest AR (of zero) is used. + */ + CHECK_N_DO(MOP, t.vcpu, LOGICAL, WRITE, mem1, t.size, + GADDR_V(mem1), AR(1)); + HOST_SYNC(t.vcpu, STAGE_COPIED); + + CHECK_N_DO(MOP, t.vcpu, LOGICAL, READ, mem2, t.size, + GADDR_V(mem2), AR(1)); + ASSERT_MEM_EQ(mem1, mem2, t.size); + + kvm_vm_free(t.kvm_vm); +} + static void set_storage_key_range(void *addr, size_t len, uint8_t key) { uintptr_t _addr, abs, i; @@ -489,6 +515,8 @@ static __uint128_t rotate(int size, __uint128_t val, int amount) amount = (amount + bits) % bits; val = cut_to_size(size, val); + if (!amount) + return val; return (val << (bits - amount)) | (val >> amount); } @@ -1102,6 +1130,11 @@ int main(int argc, char *argv[]) .requirements_met = extension_cap > 0, }, { + .name = "copy with access register mode", + .test = test_copy_access_register, + .requirements_met = true, + }, + { .name = "error checks with key", .test = test_errors_key, .requirements_met = extension_cap > 0, |