Commit 829889ac authored by Masahiro Yamada's avatar Masahiro Yamada Committed by Borislav Petkov
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x86/um: Remove -fno-unit-at-a-time workaround for pre-4.0 GCC 



Commit

  cafa0010 ("Raise the minimum required gcc version to 4.6")

bumped the minimum GCC version to 4.6 for all architectures.

'$(call cc-option,-fno-unit-at-a-time)' is now dead code since
'$(cc-version) -lt 0400' is always false. Remove it.

Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: default avatarBorislav Petkov <bp@suse.de>
Acked-by: default avatarRichard Weinberger <richard@nod.at>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/1541990120-9643-2-git-send-email-yamada.masahiro@socionext.com
parent 25956467

arch/x86/Makefile.um

+2 −6
Original line number Diff line number Diff line
@@ -26,12 +26,8 @@ cflags-y += $(call cc-option,-mpreferred-stack-boundary=2) 
# an unresolved reference.

cflags-y += -ffreestanding



# Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use

# a lot more stack due to the lack of sharing of stacklots.  Also, gcc

# 4.3.0 needs -funit-at-a-time for extern inline functions.

KBUILD_CFLAGS += $(shell if [ $(cc-version) -lt 0400 ] ; then \

			echo $(call cc-option,-fno-unit-at-a-time); \

			else echo $(call cc-option,-funit-at-a-time); fi ;)

# gcc 4.3.0 needs -funit-at-a-time for extern inline functions.

KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)



KBUILD_CFLAGS += $(cflags-y)