[xen staging-4.21] SUPPORT.md: Define support lifetime

[patchbot@xxxxxxx]

commit 9c5c0730a9f484731cf9a219d91886ede9b520ad
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Tue Nov 18 16:49:15 2025 +0000
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Tue Nov 18 18:02:13 2025 +0000

    SUPPORT.md: Define support lifetime
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
    Release-Acked-By: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
---
 SUPPORT.md | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/SUPPORT.md b/SUPPORT.md
index 491f9ecd1b..3099225c77 100644
--- a/SUPPORT.md
+++ b/SUPPORT.md
@@ -9,13 +9,13 @@ for the definitions of the support status levels etc.
 
 # Release Support
 
-    Xen-Version: 4.21-rc
-    Initial-Release: n/a
-    Supported-Until: TBD
-    Security-Support-Until: Unreleased - not yet security-supported
+    Xen-Version: 4.21
+    Initial-Release: 2025-11-19
+    Supported-Until: 2027-05-19
+    Security-Support-Until: 2028-11-19
 
 Release Notes
-: <a 
href="https://wiki.xenproject.org/wiki/Xen_Project_X.YY_Release_Notes";>RN</a>
+: <a 
href="https://wiki.xenproject.org/wiki/Xen_Project_4.21_Release_Notes";>RN</a>
 
 # Feature Support
 
--
generated by git-patchbot for /home/xen/git/xen.git#staging-4.21