[xen staging] xen: Drop CONFIG_CC_HAS_UBSAN

[patchbot@xxxxxxx]

commit c249be1de9c6e67e41ee614afb0e41d0ef0ab4d1
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Tue Apr 22 12:35:54 2025 +0100
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Tue Apr 22 15:47:48 2025 +0100

    xen: Drop CONFIG_CC_HAS_UBSAN
    
    All supported toolchains now have it.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/Kconfig       | 4 ----
 xen/Kconfig.debug | 2 +-
 2 files changed, 1 insertion(+), 5 deletions(-)

diff --git a/xen/Kconfig b/xen/Kconfig
index 2128f0ccfc..72fdb83760 100644
--- a/xen/Kconfig
+++ b/xen/Kconfig
@@ -37,10 +37,6 @@ config CC_HAS_VISIBILITY_ATTRIBUTE
 config CC_SPLIT_SECTIONS
        bool
 
-# Compiler supports -fsanitize=undefined
-config CC_HAS_UBSAN
-       def_bool $(cc-option,-fsanitize=undefined)
-
 # Set code alignment.
 #
 # Allow setting on a boolean basis, and then convert such selection to an
diff --git a/xen/Kconfig.debug b/xen/Kconfig.debug
index f7cc5ffaab..c4a8d86912 100644
--- a/xen/Kconfig.debug
+++ b/xen/Kconfig.debug
@@ -98,7 +98,7 @@ config SCRUB_DEBUG
 
 config UBSAN
        bool "Undefined behaviour sanitizer"
-       depends on HAS_UBSAN && CC_HAS_UBSAN
+       depends on HAS_UBSAN
        help
          Enable undefined behaviour sanitizer. It uses compiler to insert code
          snippets so that undefined behaviours in C are detected during 
runtime.
--
generated by git-patchbot for /home/xen/git/xen.git#staging