diff options
| -rw-r--r-- | target-s390x/cpu.h | 1 | ||||
| -rw-r--r-- | target-s390x/mmu_helper.c | 5 |
2 files changed, 5 insertions, 1 deletions
diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h index 08cdb1529e..c24ca5f7fc 100644 --- a/target-s390x/cpu.h +++ b/target-s390x/cpu.h @@ -853,6 +853,7 @@ struct sysib_322 { #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) diff --git a/target-s390x/mmu_helper.c b/target-s390x/mmu_helper.c index 7dc9900e73..c183958787 100644 --- a/target-s390x/mmu_helper.c +++ b/target-s390x/mmu_helper.c @@ -112,7 +112,10 @@ static int mmu_translate_pte(CPUS390XState *env, target_ulong vaddr, 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; } |