From: Thomas Huth <th...@linux.vnet.ibm.com>
With the EDAT-1 facility, the MMU translation can stop at the
segment table already, pointing to a 1 MB block.
Signed-off-by: Thomas Huth <th...@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jf...@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <d...@linux.vnet.ibm.com>
---
target-s390x/helper.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/target-s390x/helper.c b/target-s390x/helper.c
index ddf268e..4f2279f 100644
--- a/target-s390x/helper.c
+++ b/target-s390x/helper.c
@@ -231,6 +231,10 @@ static int mmu_translate_asce(CPUS390XState *env,
target_ulong vaddr,
offs = (vaddr >> 17) & 0x3ff8;
break;
case _ASCE_TYPE_SEGMENT:
+ if (env && (env->cregs[0] & 0x800000) && (asce & 0x400)) { /* FC? */
+ *raddr = (asce & 0xfffffffffff00000ULL) | (vaddr & 0xfffff);
+ return 0;
+ }
offs = (vaddr >> 9) & 0x07f8;
origin = asce & _SEGMENT_ENTRY_ORIGIN;
break;
--
1.8.5.5
