| Date | Fri, 21 Sep 2007 17:13:41 -0400 | From | Dave Jones <> | Subject | Re: [PATCH] [20/45] x86_64: Use 8 byte stack alignment when possible |
| |
On Fri, Sep 21, 2007 at 10:45:02PM +0200, Andi Kleen wrote: > > Kernel doesn't use SSE2, so it doesn't need 16 byte alignment. Also > the stack can be already unaligned so letting the compiler align > is useless. This may make some stack frames smaller. > Only works with very recent gcc 4.3
My gcc 4.1.2 from Fedora 7 (with who knows what backported) references this in its manpage. How was it broken before 4.3 ? (I'm curious if I'll suddenly see not expected behaviour with this change with that compiler).
Dave
-- http://www.codemonkey.org.uk - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
|