Documentation/llvm: Note s390 LLVM=1 support with LLVM 18.1.0 and newer

As of the first s390 pull request during the 6.9 merge window,
commit 691632f0e869 ("Merge tag 's390-6.9-1' of
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux"), s390 can be
built with LLVM=1 when using LLVM 18.1.0, which is the first version
that has SystemZ support implemented in ld.lld and llvm-objcopy.

Update the supported architectures table in the Kbuild LLVM
documentation to note this explicitly to make it more discoverable by
users and other developers. Additionally, this brings s390 in line with
the rest of the architectures in the table, which all support LLVM=1.

Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

diff --git a/Documentation/kbuild/llvm.rst b/Documentation/kbuild/llvm.rst
index b1d97fafddcfc990d91d101a0166dd616acfe717..bb5c44f8bd1c49cd88263c94200405479eea8325 100644 (file)
--- a/Documentation/kbuild/llvm.rst
+++ b/Documentation/kbuild/llvm.rst
@@ -178,7 +178,7 @@ yet. Bug reports are always welcome at the issue tracker below!
      - ``LLVM=1``
    * - s390
      - Maintained
-     - ``CC=clang``
+     - ``LLVM=1`` (LLVM >= 18.1.0), ``CC=clang`` (LLVM < 18.1.0)
    * - um (User Mode)
      - Maintained
      - ``LLVM=1``