Messages in this thread | | | Subject | Re: Noob question. Why is the for-pentium4 kernel built with -march=i686 ? | From | Lee Revell <> | Date | Tue, 19 Jul 2005 16:19:22 -0400 |
| |
On Tue, 2005-07-19 at 22:15 +0200, Jan Engelhardt wrote: > >AFAIK it's not possible to use SSE and MME in kernel mode, since these > >registers aren't preserved (it would be expensive). > > Floating point is anyway a no-no in the kernel.
However, there are a few exceptions like mmx_memcpy.
Lee
- 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/
| |