diff mbox series

[RFC,v3,5/6] kvm: document KVM_GMEM_NO_DIRECT_MAP flag

Message ID 20241030134912.515725-6-roypat@amazon.co.uk (mailing list archive)
State New
Headers show
Series Direct Map Removal for guest_memfd | expand

Commit Message

Patrick Roy Oct. 30, 2024, 1:49 p.m. UTC 
Signed-off-by: Patrick Roy <roypat@amazon.co.uk>
---
 Documentation/virt/kvm/api.rst | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
diff mbox series

Patch

diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst
index edc070c6e19b2..c8e21c523411c 100644
--- a/Documentation/virt/kvm/api.rst
+++ b/Documentation/virt/kvm/api.rst
@@ -6382,6 +6382,20 @@  a single guest_memfd file, but the bound ranges must not overlap).
 
 See KVM_SET_USER_MEMORY_REGION2 for additional details.
 
+The following flags are defined:
+
+KVM_GMEM_NO_DIRECT_MAP
+   Ensure memory backing this guest_memfd inode is unmapped from the kernel's
+   address space.
+
+Errors:
+
+  ========== ===============================================================
+  EOPNOTSUPP `KVM_GMEM_NO_DIRECT_MAP` was set in `flags`, but the host does
+             not support direct map manipulations.
+  ========== ===============================================================
+
+
 4.143 KVM_PRE_FAULT_MEMORY
 ---------------------------