[Qemu-devel] [PULL 20/34] s390x/tcg: MVCLU: Fault-safe handling

[Cornelia Huck <cohuck@redhat.com>]

From: David Hildenbrand <david@redhat.com>

The last remaining bit is padding with two bytes.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
 target/s390x/mem_helper.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c
index abb9d4d70c58..853b9557cf26 100644
--- a/target/s390x/mem_helper.c
+++ b/target/s390x/mem_helper.c
@@ -919,15 +919,17 @@ static inline uint32_t do_mvcl(CPUS390XState *env,
         access_memset(env, &desta, pad, ra);
         *dest = wrap_address(env, *dest + len);
     } else {
+        desta = access_prepare(env, *dest, len, MMU_DATA_STORE, mmu_idx, ra);
+
         /* The remaining length selects the padding byte. */
         for (i = 0; i < len; (*destlen)--, i++) {
             if (*destlen & 1) {
-                cpu_stb_data_ra(env, *dest, pad, ra);
+                access_set_byte(env, &desta, i, pad, ra);
             } else {
-                cpu_stb_data_ra(env, *dest, pad >> 8, ra);
+                access_set_byte(env, &desta, i, pad >> 8, ra);
             }
-            *dest = wrap_address(env, *dest + 1);
         }
+        *dest = wrap_address(env, *dest + len);
     }
 
     return *destlen ? 3 : cc;
-- 
2.20.1