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Message-Id: <20070719095445.DC94514E04@wotan.suse.de>
Date: Thu, 19 Jul 2007 11:54:45 +0200 (CEST)
From: Andi Kleen <ak@...e.de>
To: patches@...-64.org, linux-kernel@...r.kernel.org
Subject: [PATCH] [2/58] x86_64: Tell gcc to only align stack to 8 bytes
Don't need 16 byte alignment because kernel doesn't use SSE2
Signed-off-by: Andi Kleen <ak@...e.de>
---
arch/x86_64/Makefile | 1 +
1 file changed, 1 insertion(+)
Index: linux/arch/x86_64/Makefile
===================================================================
--- linux.orig/arch/x86_64/Makefile
+++ linux/arch/x86_64/Makefile
@@ -55,6 +55,7 @@ cflags-y += $(call cc-option,-mno-sse -m
# this works around some issues with generating unwind tables in older gccs
# newer gccs do it by default
cflags-y += -maccumulate-outgoing-args
+cflags-y += -mpreferred-stack-boundary=4
# do binutils support CFI?
cflags-y += $(call as-instr,.cfi_startproc\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
-
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