linux/arch/s390/kvm
David Hildenbrand 3194cdb711 KVM: s390: introduce and use KVM_REQ_VSIE_RESTART
When we change the crycb (or execution controls), we also have to make sure
that the vSIE shadow datastructures properly consider the changed
values before rerunning the vSIE. We can achieve that by simply using a
VCPU request now.

This has to be a synchronous request (== handled before entering the
(v)SIE again).

The request will make sure that the vSIE handler is left, and that the
request will be processed (NOP), therefore forcing a reload of all
vSIE data (including rebuilding the crycb) when re-entering the vSIE
interception handler the next time.

Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Message-Id: <20180925231641.4954-3-akrowiak@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2018-09-26 09:13:20 +02:00
..
diag.c KVM: s390: add vcpu stat counters for many instruction 2018-01-24 16:49:02 +01:00
gaccess.c treewide: Use array_size() in vmalloc() 2018-06-12 16:19:22 -07:00
gaccess.h KVM: s390: Remove redundant license text 2017-12-06 09:18:42 +01:00
guestdbg.c KVM: s390: introduce defines for control registers 2018-05-17 09:02:27 +02:00
intercept.c KVM: s390: add exit io request stats and simplify code 2018-03-14 19:21:11 +00:00
interrupt.c sched/swait: Rename to exclusive 2018-06-20 11:35:56 +02:00
irq.h KVM: s390: Remove redundant license text 2017-12-06 09:18:42 +01:00
Kconfig KVM: introduce kvm_arch_vcpu_async_ioctl 2017-12-14 09:26:59 +01:00
kvm-s390.c KVM: s390: introduce and use KVM_REQ_VSIE_RESTART 2018-09-26 09:13:20 +02:00
kvm-s390.h KVM: s390: vsie: simulate VCPU SIE entry/exit 2018-09-26 09:13:20 +02:00
Makefile KVM: s390: Remove redundant license text 2017-12-06 09:18:42 +01:00
priv.c KVM: s390: Fix pfmf and conditional skey emulation 2018-09-04 11:24:43 +02:00
sigp.c KVM: s390: introduce and use kvm_s390_test_cpuflags() 2018-01-24 17:46:42 +01:00
trace-s390.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
trace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vsie.c KVM: s390: vsie: simulate VCPU SIE entry/exit 2018-09-26 09:13:20 +02:00