The patch titled
Subject: selftest/fpu: avoid clang warning
has been added to the -mm tree. Its filename is
selftest-fpu-avoid-clang-warning.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/selftest-fpu-avoid-clang-warning.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/selftest-fpu-avoid-clang-warning.patch
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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Arnd Bergmann <arnd@xxxxxxxx>
Subject: selftest/fpu: avoid clang warning
With extra warnings enabled, clang complains about the redundant
-mhard-float argument:
clang: error: argument unused during compilation: '-mhard-float' [-Werror,-Wunused-command-line-argument]
Move this into the gcc-only part of the Makefile.
Link: https://lkml.kernel.org/r/20201203223652.1320700-1-arnd@xxxxxxxxxx
Fixes: 4185b3b92792 ("selftests/fpu: Add an FPU selftest")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Nathan Chancellor <natechancellor@xxxxxxxxx>
Cc: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
Cc: Petteri Aimonen <jpa@xxxxxxxxxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/Makefile | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/lib/Makefile~selftest-fpu-avoid-clang-warning
+++ a/lib/Makefile
@@ -107,7 +107,7 @@ obj-$(CONFIG_TEST_FREE_PAGES) += test_fr
# off the generation of FPU/SSE* instructions for kernel proper but FPU_FLAGS
# get appended last to CFLAGS and thus override those previous compiler options.
#
-FPU_CFLAGS := -mhard-float -msse -msse2
+FPU_CFLAGS := -msse -msse2
ifdef CONFIG_CC_IS_GCC
# Stack alignment mismatch, proceed with caution.
# GCC < 7.1 cannot compile code using `double` and -mpreferred-stack-boundary=3
@@ -120,6 +120,7 @@ ifdef CONFIG_CC_IS_GCC
# -mpreferred-stack-boundary=3 is not between 4 and 12
#
# can be triggered. Otherwise gcc doesn't complain.
+FPU_CFLAGS += -mhard-float
FPU_CFLAGS += $(call cc-option,-msse -mpreferred-stack-boundary=3,-mpreferred-stack-boundary=4)
endif
_
Patches currently in -mm which might be from arnd@xxxxxxxx are
selftest-fpu-avoid-clang-warning.patch
