[xen master] docs/process: document AI-assisted patch tags

[patchbot@xxxxxxx]

commit b13f2f3fb1915d68dfd98ba134fd92e5442a9f7c
Author:     Cody Zuschlag <cody.zuschlag@xxxxxxxxx>
AuthorDate: Wed May 27 19:45:28 2026 +0200
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Fri Jun 19 17:23:46 2026 +0100

    docs/process: document AI-assisted patch tags
    
    Add documentation for the Assisted-by tag to clarify how
    AI-assisted tooling may be disclosed in Xen patches.
    
    The guidance follows the Linux kernel documentation.
    
    Signed-off-by: Cody Zuschlag <cody.zuschlag@xxxxxxxxx>
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Acked-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
    Acked-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
---
 docs/process/sending-patches.pandoc | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/docs/process/sending-patches.pandoc 
b/docs/process/sending-patches.pandoc
index 798ecceb39..b924fa2b87 100644
--- a/docs/process/sending-patches.pandoc
+++ b/docs/process/sending-patches.pandoc
@@ -195,6 +195,28 @@ E.g.:
 
     Requested-by: Jane Doe <jane.doe@xxxxxxxxxxx>
 
+### Assisted-by:
+
+When AI tools contribute to Xen development, proper attribution
+helps track the evolving role of AI in the development process.
+Contributions should include an `Assisted-by:` tag in the
+following format:
+
+    Assisted-by: AGENT_NAME:MODEL_VERSION [, ...]
+
+Where:
+
+* `AGENT_NAME` is the name of the AI tool or framework
+* `MODEL_VERSION` is the specific model version used
+
+Basic development tools (git, gcc, make, editors) should not be listed.
+Specialised but deterministic tools may optionally be listed, but their use
+should be clear from other context in the commit message.
+
+Example:
+
+    Assisted-by: Claude:claude-3-opus
+
 ### Signed-off-by:
 
 This mandatory tag specifies the author(s) of a patch (for each author a
@@ -209,6 +231,15 @@ E.g.:
 The author must be a natural person (not a team or just a company) and the
 `Signed-off-by:` tag must include the real name of the author (no pseudonym).
 
+AI agents MUST NOT add `Signed-off-by:` tags. Only humans can legally
+certify the Developer Certificate of Origin (DCO). The human submitter
+is responsible for:
+
+* Reviewing all AI-generated code
+* Ensuring compliance with licensing requirements
+* Adding their own `Signed-off-by:` tag to certify the DCO
+* Taking full responsibility for the contribution
+
 By signing the patch with her/his name the author explicitly confirms to have
 made the contribution conforming to the `Developer's Certificate of Origin`:
 
--
generated by git-patchbot for /home/xen/git/xen.git#master