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linux-next/arch/s390/kvm
David Hildenbrand ea5f496925 KVM: s390: only one external call may be pending at a time
Only one external call may be pending at a vcpu at a time. For this
reason, we have to detect whether the SIGP externcal call interpretation
facility is available. If so, all external calls have to be injected
using this mechanism.

SIGP EXTERNAL CALL orders have to return whether another external
call is already pending. This check was missing until now.

SIGP SENSE hasn't returned yet in all conditions whether an external
call was pending.

If a SIGP EXTERNAL CALL irq is to be injected and one is already
pending, -EBUSY is returned.

Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-01-23 13:25:36 +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: only one external call may be pending at a time 2015-01-23 13:25:36 +01:00
interrupt.c KVM: s390: only one external call may be pending at a time 2015-01-23 13:25:36 +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: only one external call may be pending at a time 2015-01-23 13:25:36 +01:00
kvm-s390.h KVM: s390: only one external call may be pending at a time 2015-01-23 13:25:36 +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: only one external call may be pending at a time 2015-01-23 13:25:36 +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