commit 65b8cfb2a0b6854271dbd8baf5203896223cd4ce
author Denis Vlasenko <vda.linux@googlemail.com> Mon Jul 23 21:05:06 2007 +0000
committer Denis Vlasenko <vda.linux@googlemail.com> Mon Jul 23 21:05:06 2007 +0000
tree c764dacae025474940f698c79378e1e67443822e
parent 64a8a3bd7498f515dc29f8fb2996c46acce0483a

add comment why preferred stack boundary is 4 on i386

arch/i386/Makefile

diff --git a/arch/i386/Makefile b/arch/i386/Makefile
index 385dd52..e6c99c6 100644
--- a/arch/i386/Makefile
+++ b/arch/i386/Makefile
@@ -2,4 +2,6 @@
 # Build system
 # ==========================================================================
 
+# -mpreferred-stack-boundary=2 is essential in preventing gcc 4.2.x
+# from aligning stack to 16 bytes. (Which is gcc's way of supporting SSE).
 CFLAGS += $(call cc-option,-march=i386 -mpreferred-stack-boundary=2,)