AuxXxilium/linux_dsm_epyc7002
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5615e74f48
linux_dsm_epyc7002/arch/s390/kvm
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Christian Borntraeger 5615e74f48 KVM: s390: Remove false WARN_ON_ONCE for the PQAP instruction 
In LPAR we will only get an intercept for FC==3 for the PQAP
instruction. Running nested under z/VM can result in other intercepts as
well as ECA_APIE is an effective bit: If one hypervisor layer has
turned this bit off, the end result will be that we will get intercepts for
all function codes. Usually the first one will be a query like PQAP(QCI).
So the WARN_ON_ONCE is not right. Let us simply remove it.

Cc: Pierre Morel <pmorel@linux.ibm.com>
Cc: Tony Krowiak <akrowiak@linux.ibm.com>
Cc: stable@vger.kernel.org # v5.3+
Fixes: e5282de931 ("s390: ap: kvm: add PQAP interception for AQIC")
Link: https://lore.kernel.org/kvm/20200505083515.2720-1-borntraeger@de.ibm.com
Reported-by: Qian Cai <cailca@icloud.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2020-05-05 11:15:05 +02:00
..
diag.c KVM: s390: protvirt: Report CPU state to Ultravisor 2020-02-27 19:47:12 +01:00
gaccess.c KVM: s390: Use fallthrough; 2020-03-23 18:30:07 +01:00
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: Features and Enhancements for 5.7 part1 2020-03-16 18:19:34 +01:00
interrupt.c KVM: s390: Fix PV check in deliverable_irqs() 2020-04-20 11:23:45 +02:00
irq.h KVM: s390: Remove redundant license text 2017-12-06 09:18:42 +01:00
Kconfig vhost: refine vhost and vringh kconfig 2020-04-01 12:06:26 -04:00
kvm-s390.c ARM: 2020-04-02 15:13:15 -07:00
kvm-s390.h KVM: s390: protvirt: Report CPU state to Ultravisor 2020-02-27 19:47:12 +01:00
Makefile KVM: s390: protvirt: Add initial vm and cpu lifecycle handling 2020-02-27 19:47:11 +01:00
priv.c KVM: s390: Remove false WARN_ON_ONCE for the PQAP instruction 2020-05-05 11:15:05 +02:00
pv.c KVM: s390: protvirt: Report CPU state to Ultravisor 2020-02-27 19:47:12 +01:00
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: Fix delivery of addressing exceptions 2020-04-07 13:12:34 +02:00