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
On Wed, 7 Nov 2001, Maxwell Spangler wrote:
> * 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)
I've given alan a full description of what this does.
-Dan
--
[-] Omae no subete no kichi wa ore no mono da. [-]
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 <[email protected]> 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 [email protected]
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
On Wed, 7 Nov 2001, Maxwell Spangler wrote:
> 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.)
We're running an Athlon 1.4 GHz with an IWill KK266 board which finally
booted with Athlon optimizations (2.4.14).
We've also been running processes on it all night without issues.
We're very grateful and happy to have this fairly well resolved, expecially
since we have 11 more of these machines. :)
On Tue, 6 Nov 2001, Dan Hollis wrote:
> On Wed, 7 Nov 2001, Maxwell Spangler wrote:
> > * 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)
>
> I've given alan a full description of what this does.
Is there a place the rest of us can find out? I'm very curious to find out
what it was.
Gerhard
--
Gerhard Mack
[email protected]
<>< As a computer I find your faith in technology amusing.
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+.
--Brandon
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
>
>-
>To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
>the body of a message to [email protected]
>More majordomo info at http://vger.kernel.org/majordomo-info.html
>Please read the FAQ at http://www.tux.org/lkml/
>
>
Hello Maxwell and All!
On Wed, 7 Nov 2001 00:54:06 -0500 (EST) Maxwell Spangler
<[email protected]> wrote:
> 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.)
Two success stories here, on 2.4.13-ac8 (up to 2.4.10 no success):
1.) Abit KT7A
2.) MSI K7T Turbo
Both machines otherwise identical:
3x512 MB SDRAM
2x40 GB IBM Deskstar, etc.
So thank you very much for the patch!
Have a nice day,
Mikael J.