[PATCH v5 05/12] KVM: Documentation: describe GUEST_MEMFD_FLAG_NO_DIRECT_MAP

[Roy, Patrick]

Signed-off-by: Patrick Roy <roypat at amazon.co.uk>
---
 Documentation/virt/kvm/api.rst | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst
index c17a87a0a5ac..b52c14d58798 100644
--- a/Documentation/virt/kvm/api.rst
+++ b/Documentation/virt/kvm/api.rst
@@ -6418,6 +6418,11 @@ When the capability KVM_CAP_GUEST_MEMFD_MMAP is supported, the 'flags' field
 supports GUEST_MEMFD_FLAG_MMAP.  Setting this flag on guest_memfd creation
 enables mmap() and faulting of guest_memfd memory to host userspace.
 
+When the capability KVM_CAP_GMEM_NO_DIRECT_MAP is supported, the 'flags' field
+supports GUEST_MEMFG_FLAG_NO_DIRECT_MAP. Setting this flag makes the guest_memfd
+instance behave similarly to memfd_secret, and unmaps the memory backing it from
+the kernel's address space after allocation.
+
 When the KVM MMU performs a PFN lookup to service a guest fault and the backing
 guest_memfd has the GUEST_MEMFD_FLAG_MMAP set, then the fault will always be
 consumed from guest_memfd, regardless of whether it is a shared or a private
-- 
2.50.1