From: Alexander Gordeev <agordeev@xxxxxxxxxxxxx>
The ORB's interrupt parameter field is stored unmodified into the
interruption code when an I/O interrupt occurs. As this reflects
a real device, let's store the physical address of the subchannel
struct so it can be used when processing an interrupt.
Note: this currently doesn't fix a real bug, since virtual
addresses are identical to physical ones.
Signed-off-by: Alexander Gordeev <agordeev@xxxxxxxxxxxxx>
[EF: Updated commit message]
Signed-off-by: Eric Farman <farman@xxxxxxxxxxxxx>
Reviewed-by: Matthew Rosato <mjrosato@xxxxxxxxxxxxx>
Reviewed-by: Nico Boehr <nrb@xxxxxxxxxxxxx>
---
drivers/s390/cio/vfio_ccw_fsm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/s390/cio/vfio_ccw_fsm.c b/drivers/s390/cio/vfio_ccw_fsm.c
index a59c758869f8..0a5e8b4a6743 100644
--- a/drivers/s390/cio/vfio_ccw_fsm.c
+++ b/drivers/s390/cio/vfio_ccw_fsm.c
@@ -29,7 +29,7 @@ static int fsm_io_helper(struct vfio_ccw_private *private)
spin_lock_irqsave(sch->lock, flags);
- orb = cp_get_orb(&private->cp, (u32)(addr_t)sch, sch->lpm);
+ orb = cp_get_orb(&private->cp, (u32)virt_to_phys(sch), sch->lpm);
if (!orb) {
ret = -EIO;
goto out;
--
2.34.1
