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authorStephen Rothwell <sfr@canb.auug.org.au>2014-05-27 15:51:42 +1000
committerStephen Rothwell <sfr@canb.auug.org.au>2014-05-27 15:51:42 +1000
commitb836537bf4de486121286b61509f979b2d3b566c (patch)
treeed898ce656ef752823ef1f66a4b679ff1dc776b9 /Documentation
parent8f17b27525b1e5477b7b27ef47d11bbfcb736466 (diff)
parent1f854112553a1d65363ab27d4ee3dfb4b27075fb (diff)
Merge remote-tracking branch 'kvm/linux-next'
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/virtual/kvm/api.txt10
-rw-r--r--Documentation/virtual/kvm/devices/vm.txt26
-rw-r--r--Documentation/virtual/kvm/s390-diag.txt2
3 files changed, 34 insertions, 4 deletions
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt
index fe97350c7b4d..b3d498b08443 100644
--- a/Documentation/virtual/kvm/api.txt
+++ b/Documentation/virtual/kvm/api.txt
@@ -2211,6 +2211,8 @@ KVM_S390_SIGP_STOP (vcpu) - sigp restart
KVM_S390_PROGRAM_INT (vcpu) - program check; code in parm
KVM_S390_SIGP_SET_PREFIX (vcpu) - sigp set prefix; prefix address in parm
KVM_S390_RESTART (vcpu) - restart
+KVM_S390_INT_CLOCK_COMP (vcpu) - clock comparator interrupt
+KVM_S390_INT_CPU_TIMER (vcpu) - CPU timer interrupt
KVM_S390_INT_VIRTIO (vm) - virtio external interrupt; external interrupt
parameters in parm and parm64
KVM_S390_INT_SERVICE (vm) - sclp external interrupt; sclp parameter in parm
@@ -2314,8 +2316,8 @@ struct kvm_create_device {
4.80 KVM_SET_DEVICE_ATTR/KVM_GET_DEVICE_ATTR
-Capability: KVM_CAP_DEVICE_CTRL
-Type: device ioctl
+Capability: KVM_CAP_DEVICE_CTRL, KVM_CAP_VM_ATTRIBUTES for vm device
+Type: device ioctl, vm ioctl
Parameters: struct kvm_device_attr
Returns: 0 on success, -1 on error
Errors:
@@ -2340,8 +2342,8 @@ struct kvm_device_attr {
4.81 KVM_HAS_DEVICE_ATTR
-Capability: KVM_CAP_DEVICE_CTRL
-Type: device ioctl
+Capability: KVM_CAP_DEVICE_CTRL, KVM_CAP_VM_ATTRIBUTES for vm device
+Type: device ioctl, vm ioctl
Parameters: struct kvm_device_attr
Returns: 0 on success, -1 on error
Errors:
diff --git a/Documentation/virtual/kvm/devices/vm.txt b/Documentation/virtual/kvm/devices/vm.txt
new file mode 100644
index 000000000000..0d16f96c0eac
--- /dev/null
+++ b/Documentation/virtual/kvm/devices/vm.txt
@@ -0,0 +1,26 @@
+Generic vm interface
+====================================
+
+The virtual machine "device" also accepts the ioctls KVM_SET_DEVICE_ATTR,
+KVM_GET_DEVICE_ATTR, and KVM_HAS_DEVICE_ATTR. The interface uses the same
+struct kvm_device_attr as other devices, but targets VM-wide settings
+and controls.
+
+The groups and attributes per virtual machine, if any, are architecture
+specific.
+
+1. GROUP: KVM_S390_VM_MEM_CTRL
+Architectures: s390
+
+1.1. ATTRIBUTE: KVM_S390_VM_MEM_CTRL
+Parameters: none
+Returns: -EBUSY if already a vcpus is defined, otherwise 0
+
+Enables CMMA for the virtual machine
+
+1.2. ATTRIBUTE: KVM_S390_VM_CLR_CMMA
+Parameteres: none
+Returns: 0
+
+Clear the CMMA status for all guest pages, so any pages the guest marked
+as unused are again used any may not be reclaimed by the host.
diff --git a/Documentation/virtual/kvm/s390-diag.txt b/Documentation/virtual/kvm/s390-diag.txt
index f1de4fbade15..48c4921794ed 100644
--- a/Documentation/virtual/kvm/s390-diag.txt
+++ b/Documentation/virtual/kvm/s390-diag.txt
@@ -78,3 +78,5 @@ DIAGNOSE function code 'X'501 - KVM breakpoint
If the function code specifies 0x501, breakpoint functions may be performed.
This function code is handled by userspace.
+
+This diagnose function code has no subfunctions and uses no parameters.