I have a abit KT7A board (via kt133a chipset). This board has an "Enhance Chip Performence" option in BIOS, previously I have been able to boot athlon optimized kernels with that option off, and anything but athlon optimized kernels with it on. Now with 2.4.14 I can boot an Athlon optimized kernel with it on. (I wonder what that option _really_ does -guess I'll have to find some benchmark to run now...)
Andreas
On Wed, 7 Nov 2001 00:54:06 -0500 (EST)
Maxwell Spangler <maxwax@mindspring.com> 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
>
> -
> 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/
-
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/
This archive was generated by hypermail 2b29 : Wed Nov 07 2001 - 21:00:35 EST