[PATCH] Documentation: Add missing KVM s390 crypto attributes

[Eric Farman <farman@linux.ibm.com>]

Device attributes to enable/disable the AP interpretive execution
support for crypto were added to KVM several years ago, but they
weren't added to the documentation itself.

Fixes: 37940fb0b6a2 ("KVM: s390: device attrs to enable/disable AP interpretation")
Signed-off-by: Eric Farman <farman@linux.ibm.com>
---
 Documentation/virt/kvm/devices/vm.rst | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/Documentation/virt/kvm/devices/vm.rst b/Documentation/virt/kvm/devices/vm.rst
index a4d39fa1b083..78e63eb9994e 100644
--- a/Documentation/virt/kvm/devices/vm.rst
+++ b/Documentation/virt/kvm/devices/vm.rst
@@ -280,6 +280,24 @@ Allows user space to disable dea key wrapping, clearing the wrapping key.
 :Parameters: none
 :Returns:    0
 
+4.5. ATTRIBUTE: KVM_S390_VM_CRYPTO_ENABLE_APIE (w/o)
+-------------------------------------------------------
+
+Allows user space to enable AP interpretive execution.
+
+:Parameters: none
+:Returns:    0 for success
+	     -EOPNOTSUPP if AP instructions not available for guest
+
+4.6. ATTRIBUTE: KVM_S390_VM_CRYPTO_DISABLE_APIE (w/o)
+-------------------------------------------------------
+
+Allows user space to disable AP interpretive execution.
+
+:Parameters: none
+:Returns:    0 for success
+	     -EOPNOTSUPP if AP instructions not available for guest
+
 5. GROUP: KVM_S390_VM_MIGRATION
 ===============================
 
-- 
2.53.0