Bit 52 in a page table entry has always to be zero, or a translation
specification exception is to be recognized.
Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
#define _PAGE_RO 0x200 /* HW read-only bit */
#define _PAGE_INVALID 0x400 /* HW invalid bit */
+#define _PAGE_RES0 0x800 /* bit must be zero */
#define SK_C (0x1 << 1)
#define SK_R (0x1 << 2)
trigger_page_fault(env, vaddr, PGM_PAGE_TRANS, asc, rw, exc);
return -1;
}
-
+ if (pt_entry & _PAGE_RES0) {
+ trigger_page_fault(env, vaddr, PGM_TRANS_SPEC, asc, rw, exc);
+ return -1;
+ }
if (pt_entry & _PAGE_RO) {
*flags &= ~PAGE_WRITE;
}