diff options
| author | David Hildenbrand | 2016-03-08 12:31:52 +0100 |
|---|---|---|
| committer | Christian Borntraeger | 2016-06-20 09:55:08 +0200 |
| commit | 4a49443924731823da2e9b3ae9311b74a34e7ed8 (patch) | |
| tree | d65b91881e0a62a8e3b8aafdf982e978c46869aa /arch | |
| parent | 717c05554afa69a36398a57dac64b95972f138d5 (diff) | |
s390/mm: remember the int code for the last gmap fault
For nested virtualization, we want to know if we are handling a protection
exception, because these can directly be forwarded to the guest without
additional checks.
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/include/asm/processor.h | 1 | ||||
| -rw-r--r-- | arch/s390/mm/fault.c | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h index 94c80b6d031d..8c2922f540f9 100644 --- a/arch/s390/include/asm/processor.h +++ b/arch/s390/include/asm/processor.h @@ -110,6 +110,7 @@ struct thread_struct { mm_segment_t mm_segment; unsigned long gmap_addr; /* address of last gmap fault. */ unsigned int gmap_write_flag; /* gmap fault write indication */ + unsigned int gmap_int_code; /* int code of last gmap fault */ unsigned int gmap_pfault; /* signal of a pending guest pfault */ struct per_regs per_user; /* User specified PER registers */ struct per_event per_event; /* Cause of the last PER trap */ diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c index b84416c11c43..730e0d3aa840 100644 --- a/arch/s390/mm/fault.c +++ b/arch/s390/mm/fault.c @@ -419,6 +419,7 @@ static inline int do_exception(struct pt_regs *regs, int access) if (gmap) { current->thread.gmap_addr = address; current->thread.gmap_write_flag = !!(flags & FAULT_FLAG_WRITE); + current->thread.gmap_int_code = regs->int_code & 0xffff; address = __gmap_translate(gmap, address); if (address == -EFAULT) { fault = VM_FAULT_BADMAP; |