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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-07-10 19:16:43 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-07-10 19:16:43 +1000 |
| commit | 50bba07d6a16ce4a3b4f6abb44bfd3645c046ef6 (patch) | |
| tree | c76f080377dd611857fa33f38a2b8a2af4576f8b /Documentation/virtual/kvm/api.txt | |
| parent | a8b91e43afd736fcebb0836359e5ddaeae45b2ab (diff) | |
| parent | 50fb31cfed9218b439360caf7c0399b00042da15 (diff) | |
Merge branch 'merge' into next
We want to bring in the latest IRQ fixes
Diffstat (limited to 'Documentation/virtual/kvm/api.txt')
| -rw-r--r-- | Documentation/virtual/kvm/api.txt | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt index 930126698a0f..2c9948379469 100644 --- a/Documentation/virtual/kvm/api.txt +++ b/Documentation/virtual/kvm/api.txt @@ -1930,6 +1930,23 @@ The "pte_enc" field provides a value that can OR'ed into the hash PTE's RPN field (ie, it needs to be shifted left by 12 to OR it into the hash PTE second double word). +4.75 KVM_IRQFD + +Capability: KVM_CAP_IRQFD +Architectures: x86 +Type: vm ioctl +Parameters: struct kvm_irqfd (in) +Returns: 0 on success, -1 on error + +Allows setting an eventfd to directly trigger a guest interrupt. +kvm_irqfd.fd specifies the file descriptor to use as the eventfd and +kvm_irqfd.gsi specifies the irqchip pin toggled by this event. When +an event is tiggered on the eventfd, an interrupt is injected into +the guest using the specified gsi pin. The irqfd is removed using +the KVM_IRQFD_FLAG_DEASSIGN flag, specifying both kvm_irqfd.fd +and kvm_irqfd.gsi. + + 5. The kvm_run structure ------------------------ |