On 6/3/22 08:56, Claudio Imbrenda wrote:
Add documentation for the new commands added to the KVM_S390_PV_COMMAND
ioctl.
Signed-off-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>
Reviewed-by: Nico Boehr <nrb@xxxxxxxxxxxxx>
---
Documentation/virt/kvm/api.rst | 25 ++++++++++++++++++++++---
1 file changed, 22 insertions(+), 3 deletions(-)
diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst
index 11e00a46c610..97d35b30ce3b 100644
--- a/Documentation/virt/kvm/api.rst
+++ b/Documentation/virt/kvm/api.rst
@@ -5143,11 +5143,13 @@ KVM_PV_ENABLE
===== =============================
KVM_PV_DISABLE
-
Deregister the VM from the Ultravisor and reclaim the memory that
had been donated to the Ultravisor, making it usable by the kernel
- again. All registered VCPUs are converted back to non-protected
- ones.
+ again. All registered VCPUs are converted back to non-protected
+ ones. If a previous VM had been prepared for asynchonous teardown
+ with KVM_PV_ASYNC_DISABLE_PREPARE and not actually torn down with
+ KVM_PV_ASYNC_DISABLE, it will be torn down in this call together with
+ the current VM.
KVM_PV_VM_SET_SEC_PARMS
Pass the image header from VM memory to the Ultravisor in
@@ -5160,6 +5162,23 @@ KVM_PV_VM_VERIFY
Verify the integrity of the unpacked image. Only if this succeeds,
KVM is allowed to start protected VCPUs.
+KVM_PV_ASYNC_DISABLE_PREPARE
+ Prepare the current protected VM for asynchronous teardown. Most
+ resources used by the current protected VM will be set aside for a
We should state that leftover UV state needs cleanup, namely secure
storage and the configuration.
