Commit-ID: 829889ac4a7d26858860c297e64051bd27ce8fbe
Gitweb: https://git.kernel.org/tip/829889ac4a7d26858860c297e64051bd27ce8fbe
Author: Masahiro Yamada <yamada.masah...@socionext.com>
AuthorDate: Mon, 12 Nov 2018 11:35:19 +0900
Committer: Borislav Petkov <b...@suse.de>
CommitDate: Sun, 9 Dec 2018 11:51:11 +0100
x86/um: Remove -fno-unit-at-a-time workaround for pre-4.0 GCC
Commit
cafa0010cd51 ("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: Masahiro Yamada <yamada.masah...@socionext.com>
Signed-off-by: Borislav Petkov <b...@suse.de>
Acked-by: Richard Weinberger <rich...@nod.at>
Cc: "H. Peter Anvin" <h...@zytor.com>
Cc: Ingo Molnar <mi...@redhat.com>
Cc: Michael Ellerman <m...@ellerman.id.au>
Cc: Thomas Gleixner <t...@linutronix.de>
Cc: linuxppc-...@lists.ozlabs.org
Cc: x86-ml <x...@kernel.org>
Link:
https://lkml.kernel.org/r/1541990120-9643-2-git-send-email-yamada.masah...@socionext.com
---
arch/x86/Makefile.um | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/arch/x86/Makefile.um b/arch/x86/Makefile.um
index 91085a08de6c..577976b7d1f8 100644
--- a/arch/x86/Makefile.um
+++ b/arch/x86/Makefile.um
@@ -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)
