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authorFei Li <sherrylf@linux.vnet.ibm.com>2017-01-19 19:02:26 +0300
committerChristian Borntraeger <borntraeger@de.ibm.com>2017-04-06 14:15:36 +0300
commit08fab50da669e5ee5a542592895fcb63be3cd7b1 (patch)
tree5a5a6da1eabfa35708d2f96e4c510f2433374052 /arch/s390/kvm
parent4e0b1ab72b8af961bcaca9ec1475279c1cd9579c (diff)
downloadlinux-08fab50da669e5ee5a542592895fcb63be3cd7b1.tar.xz
KVM: s390: interface for suppressible I/O adapters
In order to properly implement adapter-interruption suppression, we need a way for userspace to specify which adapters are subject to suppression. Let's convert the existing (and unused) 'pad' field into a 'flags' field and define a flag value for suppressible adapters. Besides, add documentation for the interface. Signed-off-by: Fei Li <sherrylf@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/kvm')
-rw-r--r--arch/s390/kvm/interrupt.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index 311eef0df855..dba51ad62570 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -1997,6 +1997,8 @@ static int register_io_adapter(struct kvm_device *dev,
adapter->maskable = adapter_info.maskable;
adapter->masked = false;
adapter->swap = adapter_info.swap;
+ adapter->suppressible = (adapter_info.flags) &
+ KVM_S390_ADAPTER_SUPPRESSIBLE;
dev->kvm->arch.adapters[adapter->id] = adapter;
return 0;