Messages in this thread Patch in this message | | | Date | Sun, 15 Jul 2018 16:35:44 -0700 | From | tip-bot for Masahiro Yamada <> | Subject | [tip:x86/build] x86/build: Remove old -funit-at-a-time GCC quirk |
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Commit-ID: bdc9c3e5ed953441a46ef3acd81c783d591c9a96 Gitweb: https://git.kernel.org/tip/bdc9c3e5ed953441a46ef3acd81c783d591c9a96 Author: Masahiro Yamada <yamada.masahiro@socionext.com> AuthorDate: Mon, 9 Jul 2018 21:07:21 +0900 Committer: Ingo Molnar <mingo@kernel.org> CommitDate: Mon, 16 Jul 2018 00:25:10 +0200
x86/build: Remove old -funit-at-a-time GCC quirk
The following commit:
e501ce957a78 ("x86: Force asm-goto")
... bumped the minimum GCC version to 4.5 for building the x86 kernel.
arch/x86/Makefile no longer needs to take care of older GCC versions, such as this pre-4.0 -funit-at-a-time quirk.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Link: http://lkml.kernel.org/r/1531138041-24200-1-git-send-email-yamada.masahiro@socionext.com Signed-off-by: Ingo Molnar <mingo@kernel.org> --- arch/x86/Makefile | 5 ----- 1 file changed, 5 deletions(-)
diff --git a/arch/x86/Makefile b/arch/x86/Makefile index a08e82856563..7e3c07d6ad42 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -80,11 +80,6 @@ ifeq ($(CONFIG_X86_32),y) # alignment instructions. KBUILD_CFLAGS += $(call cc-option,$(cc_stack_align4)) - # 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: - KBUILD_CFLAGS += $(call cc-ifversion, -lt, 0400, \ - $(call cc-option,-fno-unit-at-a-time)) - # CPU-specific tuning. Anything which can be shared with UML should go here. include arch/x86/Makefile_32.cpu KBUILD_CFLAGS += $(cflags-y)
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