[xen stable-4.21] Update to Xen 4.21

[patchbot@xxxxxxx]

commit 06af9ef22996cecc2024a2e6523cec77a655581e
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Tue Nov 18 16:52:32 2025 +0000
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Tue Nov 18 18:02:13 2025 +0000

    Update to Xen 4.21
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 README       | 12 ++++++------
 xen/Makefile |  2 +-
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/README b/README
index 53a4d5c2ae..55f3aa043f 100644
--- a/README
+++ b/README
@@ -1,11 +1,11 @@
-############################################################
+###################################
  __  __            _  _    ____  _
- \ \/ /___ _ __   | || |  |___ \/ |   _ __ ___
-  \  // _ \ '_ \  | || |_   __) | |__| '__/ __|
-  /  \  __/ | | | |__   _| / __/| |__| | | (__
- /_/\_\___|_| |_|    |_|(_)_____|_|  |_|  \___|
+ \ \/ /___ _ __   | || |  |___ \/ |
+  \  // _ \ '_ \  | || |_   __) | |
+  /  \  __/ | | | |__   _| / __/| |
+ /_/\_\___|_| |_|    |_|(_)_____|_|
 
-############################################################
+###################################
 
 https://www.xen.org/
 
diff --git a/xen/Makefile b/xen/Makefile
index ddcee8835c..37ca2e657e 100644
--- a/xen/Makefile
+++ b/xen/Makefile
@@ -6,7 +6,7 @@ this-makefile := $(call lastword,$(MAKEFILE_LIST))
 # All other places this is stored (eg. compile.h) should be autogenerated.
 export XEN_VERSION       = 4
 export XEN_SUBVERSION    = 21
-export XEN_EXTRAVERSION ?= .0-rc3$(XEN_VENDORVERSION)
+export XEN_EXTRAVERSION ?= .0$(XEN_VENDORVERSION)
 export XEN_FULLVERSION   = $(XEN_VERSION).$(XEN_SUBVERSION)$(XEN_EXTRAVERSION)
 -include xen-version
 
--
generated by git-patchbot for /home/xen/git/xen.git#stable-4.21