This is a note to let you know that I've just added the patch titled
MIPS: Move '-Wa,-msoft-float' check from as-option to cc-option
to the 6.1-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:
mips-move-wa-msoft-float-check-from-as-option-to-cc-option.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From nathan@xxxxxxxxxx Wed Jun 14 20:04:42 2023
From: Nathan Chancellor <nathan@xxxxxxxxxx>
Date: Wed, 14 Jun 2023 11:04:36 -0700
Subject: MIPS: Move '-Wa,-msoft-float' check from as-option to cc-option
To: gregkh@xxxxxxxxxxxxxxxxxxx, sashal@xxxxxxxxxx, ndesaulniers@xxxxxxxxxx
Cc: naresh.kamboju@xxxxxxxxxx, stable@xxxxxxxxxxxxxxx, llvm@xxxxxxxxxxxxxxx, Nathan Chancellor <nathan@xxxxxxxxxx>, tsbogend@xxxxxxxxxxxxxxxx, linux-mips@xxxxxxxxxxxxxxx
Message-ID: <20230612-6-1-asssembler-target-llvm-17-v1-2-75605d553401@xxxxxxxxxx>
From: Nathan Chancellor <nathan@xxxxxxxxxx>
This patch is for linux-6.1.y and earlier, it has no direct mainline
equivalent.
In order to backport commit d5c8d6e0fa61 ("kbuild: Update assembler
calls to use proper flags and language target") to resolve a separate
issue regarding PowerPC, the problem noticed and fixed by
commit 80a20d2f8288 ("MIPS: Always use -Wa,-msoft-float and eliminate
GAS_HAS_SET_HARDFLOAT") needs to be addressed. Unfortunately, 6.1 and
earlier do not contain commit e4412739472b ("Documentation: raise
minimum supported version of binutils to 2.25"), so it cannot be assumed
that all supported versions of GNU as have support for -msoft-float.
In order to switch from KBUILD_CFLAGS to KBUILD_AFLAGS in as-option
without consequence, move the '-Wa,-msoft-float' check to cc-option,
including '$(cflags-y)' directly to avoid the issue mentioned in
commit 80a20d2f8288 ("MIPS: Always use -Wa,-msoft-float and eliminate
GAS_HAS_SET_HARDFLOAT").
Signed-off-by: Nathan Chancellor <nathan@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
Cc: tsbogend@xxxxxxxxxxxxxxxx
Cc: linux-mips@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/mips/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -109,7 +109,7 @@ endif
# (specifically newer than 2.24.51.20140728) we then also need to explicitly
# set ".set hardfloat" in all files which manipulate floating point registers.
#
-ifneq ($(call as-option,-Wa$(comma)-msoft-float,),)
+ifneq ($(call cc-option,$(cflags-y) -Wa$(comma)-msoft-float,),)
cflags-y += -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float
endif
Patches currently in stable-queue which might be from nathan@xxxxxxxxxx are
queue-6.1/riscv-purgatory-remove-pgo-flags.patch
queue-6.1/powerpc-purgatory-remove-pgo-flags.patch
queue-6.1/mips-move-wa-msoft-float-check-from-as-option-to-cc-option.patch
queue-6.1/kexec-support-purgatories-with-.text.hot-sections.patch
queue-6.1/mips-prefer-cc-option-for-additions-to-cflags.patch
queue-6.1/x86-purgatory-remove-pgo-flags.patch
queue-6.1/x86-boot-compressed-prefer-cc-option-for-cflags-additions.patch
queue-6.1/kbuild-update-assembler-calls-to-use-proper-flags-and-language-target.patch
