lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite for Android: free password hash cracker in your pocket
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:   Wed, 20 May 2020 00:08:55 +0200
From:   Arnd Bergmann <>
To:     Russell King <>
Cc:     Arnd Bergmann <>,
        Szabolcs Nagy <>,
        Masahiro Yamada <>,
        Nick Desaulniers <>,
        Linus Walleij <>,,
Subject: [PATCH] ARM: pass -msoft-float to gcc earlier

Szabolcs Nagy ran into a kernel build failure with a custom gcc
toochain that sets -mfpu=auto -mfloat-abi=hard:

 /tmp/ccmNdcdf.s:1898: Error: selected processor does not support `cpsid i' in ARM mode

The problem is that $(call cc-option, -march=armv7-a) fails before the
kernel overrides the gcc options to also pass -msoft-float.

Move the option to the beginning the Makefile, before we call
cc-option for the first time.

Reported-by: Szabolcs Nagy <>
Signed-off-by: Arnd Bergmann <>
 arch/arm/Makefile | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 7d5cd0f85461..e428ea6eb0fa 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -16,6 +16,8 @@ LDFLAGS_vmlinux	+= --be8
+KBUILD_CFLAGS	+= -msoft-float
 KBUILD_LDS_MODULE	+= $(srctree)/arch/arm/kernel/
@@ -135,7 +137,7 @@ AFLAGS_ISA	:=$(CFLAGS_ISA)
 # Need -Uarm for gcc < 3.x
-KBUILD_CFLAGS	+=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
+KBUILD_CFLAGS	+=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -Uarm
 KBUILD_AFLAGS	+=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
 CHECKFLAGS	+= -D__arm__

Powered by blists - more mailing lists