Signed-off-by: Patrick Roy --- 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