[Qemu-devel] [PATCH for-4.1 3/6] target/s390x: Use ilen from unwind in tlb_fill

[Richard Henderson]

From: Richard Henderson <r...@twiddle.net>

Signed-off-by: Richard Henderson <r...@twiddle.net>
---
 target/s390x/mem_helper.c | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c
index 3f76a8abfd..838c32fc96 100644
--- a/target/s390x/mem_helper.c
+++ b/target/s390x/mem_helper.c
@@ -44,7 +44,20 @@ void tlb_fill(CPUState *cs, target_ulong addr, int size,
 {
     int ret = s390_cpu_handle_mmu_fault(cs, addr, size, access_type, mmu_idx);
     if (unlikely(ret != 0)) {
-        cpu_loop_exit_restore(cs, retaddr);
+        cpu_restore_state(cs, retaddr, true);
+
+        /*
+         * Note that handle_mmu_fault sets ilen to either 2 (for code)
+         * or AUTO (for data).  We can resolve AUTO now, as if it was
+         * set to UNWIND -- that will have been done via assignment
+         * in cpu_restore_state.  Otherwise re-examine access_type.
+         */
+        if (access_type == MMU_INST_FETCH) {
+            CPUS390XState *env = cs->env_ptr;
+            env->int_pgm_ilen = 2;
+        }
+
+        cpu_loop_exit(cs);
     }
 }
 
-- 
2.17.1