linux-stable/arch/s390/kvm
Thomas Huth 492d8642ea KVM: s390: Forward PSW to next instruction for addressing exceptions
When the SIE exited by a DAT access exceptions which we can not
resolve, the guest tried to access a page which is out of bounds
and can not be paged-in. In this case we have to signal the bad
access by injecting an address exception. However, address exceptions
are either suppressing or terminating, i.e. the PSW has to point to
the next instruction when the exception is delivered. Since the
originating DAT access exception is nullifying, the PSW still
points to the offending instruction instead, so we've got to forward
the PSW to the next instruction.
Having fixed this issue, we can now also enable the TPROT
interpretation facility again which had been disabled because
of this problem.

Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-06 13:40:45 +01:00
..
diag.c KVM: s390/cmm: Fix prefix handling for diag 10 balloon 2014-09-10 12:19:42 +02:00
gaccess.c KVM: s390: use facilities and cpu_id per KVM 2015-02-09 12:44:12 +01:00
gaccess.h KVM: s390: Enable DAT support for TPROT handler 2014-05-30 09:39:36 +02:00
guestdbg.c KVM: s390: return -EFAULT if copy_from_user() fails 2014-05-06 14:57:59 +02:00
intercept.c KVM: s390: Take addressing mode into account for MVPG interception 2015-01-23 13:25:38 +01:00
interrupt.c KVM: s390: Nullify instruction for certain program exceptions 2015-03-06 13:40:40 +01:00
irq.h KVM: s390: irq routing for adapter interrupts. 2014-03-21 13:43:00 +01:00
Kconfig rcu: Make SRCU optional by using CONFIG_SRCU 2015-01-06 11:04:29 -08:00
kvm-s390.c KVM: s390: Forward PSW to next instruction for addressing exceptions 2015-03-06 13:40:45 +01:00
kvm-s390.h KVM: s390: reinjection of irqs can fail in the tpi handler 2015-03-06 13:40:37 +01:00
Makefile KVM: s390: hardware support for guest debugging 2014-04-22 13:24:51 +02:00
priv.c KVM: s390: reinjection of irqs can fail in the tpi handler 2015-03-06 13:40:37 +01:00
sigp.c KVM: s390: forward most SIGP orders to user space 2015-01-23 13:25:37 +01:00
trace-s390.h KVM: s390: handle stop irqs without action_bits 2015-01-23 13:25:33 +01:00
trace.h KVM: s390: interpretive execution of SIGP EXTERNAL CALL 2014-05-16 14:57:28 +02:00