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authorCornelia Huck <cornelia.huck@de.ibm.com>2012-12-20 18:32:08 +0400
committerMarcelo Tosatti <mtosatti@redhat.com>2013-01-08 01:53:40 +0400
commitd8346b7d9bab37e6cc712ff1622c65ff98bdfef8 (patch)
tree60f36ff7f61757501f3560d8860ca217d7e92640 /Documentation/virtual
parentb1c571a50dfacf25a24c23271e9b8bf18ff6b102 (diff)
downloadlinux-d8346b7d9bab37e6cc712ff1622c65ff98bdfef8.tar.xz
KVM: s390: Support for I/O interrupts.
Add support for handling I/O interrupts (standard, subchannel-related ones and rudimentary adapter interrupts). The subchannel-identifying parameters are encoded into the interrupt type. I/O interrupts are floating, so they can't be injected on a specific vcpu. Reviewed-by: Alexander Graf <agraf@suse.de> Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'Documentation/virtual')
-rw-r--r--Documentation/virtual/kvm/api.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt
index a4df5535996b..83bd92b52936 100644
--- a/Documentation/virtual/kvm/api.txt
+++ b/Documentation/virtual/kvm/api.txt
@@ -2069,6 +2069,10 @@ KVM_S390_INT_VIRTIO (vm) - virtio external interrupt; external interrupt
KVM_S390_INT_SERVICE (vm) - sclp external interrupt; sclp parameter in parm
KVM_S390_INT_EMERGENCY (vcpu) - sigp emergency; source cpu in parm
KVM_S390_INT_EXTERNAL_CALL (vcpu) - sigp external call; source cpu in parm
+KVM_S390_INT_IO(ai,cssid,ssid,schid) (vm) - compound value to indicate an
+ I/O interrupt (ai - adapter interrupt; cssid,ssid,schid - subchannel);
+ I/O interruption parameters in parm (subchannel) and parm64 (intparm,
+ interruption subclass)
Note that the vcpu ioctl is asynchronous to vcpu execution.