From: tip-bot for Masahiro Yamada <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: mingo@kernel.org, torvalds@linux-foundation.org, hpa@zytor.com,
linux-kernel@vger.kernel.org, tglx@linutronix.de,
peterz@infradead.org, yamada.masahiro@socionext.com
Subject: [tip:x86/build] x86/build: Remove old -funit-at-a-time GCC quirk
Date: Sun, 15 Jul 2018 16:35:44 -0700 [thread overview]
Message-ID: <tip-bdc9c3e5ed953441a46ef3acd81c783d591c9a96@git.kernel.org> (raw)
In-Reply-To: <1531138041-24200-1-git-send-email-yamada.masahiro@socionext.com>
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)
prev parent reply other threads:[~2018-07-15 23:36 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-09 12:07 [PATCH] x86/build: remove code effective only for GCC older than 4.0 Masahiro Yamada
2018-07-15 23:35 ` tip-bot for Masahiro Yamada [this message]
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