[PATCH] [2/58] x86_64: Tell gcc to only align stack to 8 bytes

[Andi Kleen]

Don't need 16 byte alignment because kernel doesn't use SSE2

Signed-off-by: Andi Kleen <ak@xxxxxxx>

---
 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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