From: Mathieu Malaterre <malat@debian.org>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: Mathieu Malaterre <malat@debian.org>,
Christophe Leroy <christophe.leroy@c-s.fr>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: [PATCH] powerpc/32: Move the old 6xx -mcpu logic before the TARGET_CPU logic
Date: Tue, 4 Dec 2018 21:53:45 +0100 [thread overview]
Message-ID: <20181204205345.9514-1-malat@debian.org> (raw)
The code:
ifdef CONFIG_6xx
KBUILD_CFLAGS += -mcpu=powerpc
endif
was added in 2006 in commit f48b8296b315 ("[PATCH] powerpc32: Set cpu
explicitly in kernel compiles"). This change was acceptable since the
TARGET_CPU logic was 64-bit only.
Since commit 0e00a8c9fd92 ("powerpc: Allow CPU selection
also on PPC32") this logic is no longer acceptable after the TARGET_CPU
specific. It currently appends -mcpu=powerpc at the end of the command
line, after any TARGET_CPU specific:
gcc -Wp,-MD,init/.do_mounts.o.d ...
-mcpu=powerpc -mbig-endian -m32 ...
-mcpu=e300c2 ...
-mcpu=powerpc ...
../init/do_mounts.c
Cc: Christophe Leroy <christophe.leroy@c-s.fr>
Fixes: 0e00a8c9fd92 ("powerpc: Allow CPU selection also on PPC32")
Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://www.mail-archive.com/linuxppc-dev@lists.ozlabs.org/msg142315.html
Signed-off-by: Mathieu Malaterre <malat@debian.org>
---
arch/powerpc/Makefile | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 8a2ce14d68d0..544b30667ea5 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -30,6 +30,10 @@ endif
endif
endif
+ifdef CONFIG_6xx
+KBUILD_CFLAGS += -mcpu=powerpc
+endif
+
ifeq ($(CROSS_COMPILE),)
KBUILD_DEFCONFIG := $(shell uname -m)_defconfig
else
@@ -241,10 +245,6 @@ KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm)
# often slow when they are implemented at all
KBUILD_CFLAGS += $(call cc-option,-mno-string)
-ifdef CONFIG_6xx
-KBUILD_CFLAGS += -mcpu=powerpc
-endif
-
cpu-as-$(CONFIG_4xx) += -Wa,-m405
cpu-as-$(CONFIG_ALTIVEC) += $(call as-option,-Wa$(comma)-maltivec)
cpu-as-$(CONFIG_E200) += -Wa,-me200
--
2.19.2
next reply other threads:[~2018-12-04 20:54 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-04 20:53 Mathieu Malaterre [this message]
2018-12-04 21:28 ` [PATCH] powerpc/32: Move the old 6xx -mcpu logic before the TARGET_CPU logic Christophe LEROY
2018-12-05 7:40 ` Mathieu Malaterre
2018-12-05 17:53 ` [PATCH v2] " Mathieu Malaterre
2018-12-22 9:54 ` [v2] " Michael Ellerman
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