Messages in this thread | | | Subject | Re: [PATCH] 2.6 workaround for Athlon/Opteron prefetch errata | From | Alan Cox <> | Date | Thu, 11 Sep 2003 15:14:02 +0100 |
| |
On Iau, 2003-09-11 at 14:54, Linus Torvalds wrote: > This patch is fragile and looks pointless. > > What's wrong with the current status quo that just says "Athlon prefetch > is broken"?
Firstly performance, secondly user space exceptions. We work around lots of other broken CPU things this one triggers a path that only matters on Athlon.
There is *one* change needed. We shouldnt call is_prefetch unless the current CPU is an Athlon. That way its a performance improvement for PIV, and Athlon in general, fixes the bug and causes no fancy athlon fixup code for non AMD processors.
Alan
- 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/
| |