This is a note to let you know that I've just added the patch titled
powerpc/vdso: Include CLANG_FLAGS explicitly in ldflags-y
to the 6.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powerpc-vdso-include-clang_flags-explicitly-in-ldflags-y.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a7e5eb53bf9b800d086e2ebcfebd9a3bb16bd1b0 Mon Sep 17 00:00:00 2001
From: Nathan Chancellor <nathan@xxxxxxxxxx>
Date: Thu, 1 Jun 2023 11:46:33 -0700
Subject: powerpc/vdso: Include CLANG_FLAGS explicitly in ldflags-y
From: Nathan Chancellor <nathan@xxxxxxxxxx>
commit a7e5eb53bf9b800d086e2ebcfebd9a3bb16bd1b0 upstream.
A future change will move CLANG_FLAGS from KBUILD_{A,C}FLAGS to
KBUILD_CPPFLAGS so that '--target' is available while preprocessing.
When that occurs, the following error appears when building the compat
PowerPC vDSO:
clang: error: unsupported option '-mbig-endian' for target 'x86_64-pc-linux-gnu'
make[3]: *** [.../arch/powerpc/kernel/vdso/Makefile:76: arch/powerpc/kernel/vdso/vdso32.so.dbg] Error 1
Explicitly add CLANG_FLAGS to ldflags-y, so that '--target' will always
be present.
Signed-off-by: Nathan Chancellor <nathan@xxxxxxxxxx>
Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/powerpc/kernel/vdso/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/powerpc/kernel/vdso/Makefile
+++ b/arch/powerpc/kernel/vdso/Makefile
@@ -54,7 +54,7 @@ KASAN_SANITIZE := n
KCSAN_SANITIZE := n
ccflags-y := -fno-common -fno-builtin
-ldflags-y := -Wl,--hash-style=both -nostdlib -shared -z noexecstack
+ldflags-y := -Wl,--hash-style=both -nostdlib -shared -z noexecstack $(CLANG_FLAGS)
ldflags-$(CONFIG_LD_IS_LLD) += $(call cc-option,--ld-path=$(LD),-fuse-ld=lld)
# Filter flags that clang will warn are unused for linking
ldflags-y += $(filter-out $(CC_AUTO_VAR_INIT_ZERO_ENABLER) $(CC_FLAGS_FTRACE) -Wa$(comma)%, $(KBUILD_CFLAGS))
Patches currently in stable-queue which might be from nathan@xxxxxxxxxx are
queue-6.4/mips-include-kbuild_cppflags-in-checkflags-invocation.patch
queue-6.4/kbuild-add-clang_flags-to-as-instr.patch
queue-6.4/start_kernel-add-__no_stack_protector-function-attribute.patch
queue-6.4/kbuild-add-clang_flags-to-kbuild_cppflags.patch
queue-6.4/powerpc-vdso-include-clang_flags-explicitly-in-ldflags-y.patch
queue-6.4/jffs2-reduce-stack-usage-in-jffs2_build_xattr_subsystem.patch
queue-6.4/kbuild-add-kbuild_cppflags-to-as-option-invocation.patch
