Messages in this thread | | | Subject | Re: [PATCH] 2.6 workaround for Athlon/Opteron prefetch errata | From | Alan Cox <> | Date | Mon, 15 Sep 2003 08:45:59 +0100 |
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On Llu, 2003-09-15 at 04:55, Bill Davidsen wrote: > 1 - the code is not needed for Athlon, prefetch is turned off on broken > CPUs now. A generic kernel runs fine on Athlon.
That disable you talk about is bloat. It also trashes the performance of PIV boxes. In fact I checked out of interest - the disable hack currently being used is adding *over* 300 bytes to my kernel as its inlined repeatedly. So its larger, and it ruins performance for all processors.
You also need it for userspace prefetch fault fixup for a kernel without CONFIG_MK7 to run stuff perfectly on Athlon.
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