linux-stable/arch/s390/kvm
David Hildenbrand 6cddd432e3 KVM: s390: handle stop irqs without action_bits
This patch removes the famous action_bits and moves the handling of
SIGP STOP AND STORE STATUS directly into the SIGP STOP interrupt.

The new local interrupt infrastructure is used to track pending stop
requests.

STOP irqs are the only irqs that don't get actively delivered. They
remain pending until the stop function is executed (=stop intercept).

If another STOP irq is already pending, -EBUSY will now be returned
(needed for the SIGP handling code).

Migration of pending SIGP STOP (AND STORE STATUS) orders should now
be supported out of the box.

Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-01-23 13:25:33 +01:00
..
diag.c KVM: s390/cmm: Fix prefix handling for diag 10 balloon 2014-09-10 12:19:42 +02:00
gaccess.c kernel: Provide READ_ONCE and ASSIGN_ONCE 2014-12-20 16:48:59 -08:00
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: handle stop irqs without action_bits 2015-01-23 13:25:33 +01:00
interrupt.c KVM: s390: handle stop irqs without action_bits 2015-01-23 13:25:33 +01:00
irq.h KVM: s390: irq routing for adapter interrupts. 2014-03-21 13:43:00 +01:00
Kconfig KVM: Give IRQFD its own separate enabling Kconfig option 2014-08-05 14:26:28 +02:00
kvm-s390.c KVM: s390: handle stop irqs without action_bits 2015-01-23 13:25:33 +01:00
kvm-s390.h KVM: s390: handle stop irqs without action_bits 2015-01-23 13:25:33 +01:00
Makefile KVM: s390: hardware support for guest debugging 2014-04-22 13:24:51 +02:00
priv.c 3.19 changes for KVM: 2014-12-18 16:05:28 -08:00
sigp.c KVM: s390: handle stop irqs without action_bits 2015-01-23 13:25:33 +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