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SubjectRe: Athlon Bug Stomper Success Reports for 2.4.14
Now by athlon optimizations, you just mean setting "Processor Type" to 
Athlon/Duron/K7, right? if that is the case, my athlon 1.0ghz worked as
of kernel 2.4.9 on an Epox 8kta+.


Maxwell Spangler wrote:

>My Athlon Thunderbird has been happily compiling kernels for over 24 hours
>straight using 2.4.14 with an Athlon-optimized kernel. It could not do this
>in many past kernels and I believe the code snippet offered in September is
>working nicely. There was a long thread about this back then, but I haven't
>seen any Athlon problem reports between that time and now. For the lurkers on
>the list, and the benefit of archives, could we please record a few successes?
>If you are using an Athlon with 2.4.14 and you previously had problems but now
>have stability with an Athlon optimized, kernel, please respond. (Just a few
>people, please.)
>Oh, hardware is Tyan Trinity KT-A (S2390B) with Athlon Thunderbird 1.2Ghz,
>512M Crucial PC133 Cas2 RAM, many drives..etc.
>My sincere appreciation and thanks to all that were involved in tracking this
>down and making the fix possible.
> * Nobody seems to know what this does. Damn.
> *
> * But it does seem to fix some unspecified problem
> * with 'movntq' copies on Athlons.
> *
> * VIA 8363 chipset:
> * - bit 7 at offset 0x55: Debug (RW)
> */
>static void __init pci_fixup_via_athlon_bug(struct pci_dev *d)
> u8 v;
> pci_read_config_byte(d, 0x55, &v);
> if (v & 0x80) {
> printk("Trying to stomp on Athlon bug...\n");
> v &= 0x7f; /* clear bit 55.7 */
> pci_write_config_byte(d, 0x55, v);
> }
>Maxwell Spangler
>Program Writer
>Greenbelt, Maryland, U.S.A.
>Washington D.C. Metropolitan Area
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