mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 02:39:48 +00:00
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>
This commit is contained in:
parent
717c05554a
commit
4a49443924
2 changed files with 2 additions and 0 deletions
|
@ -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 */
|
||||
|
|
|
@ -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;
|
||||
|
|
Loading…
Reference in a new issue