On Wed, 10 Jan 2001, rdunlap wrote:
> Here's a patch to 2.2.19-pre7 that is essentially a backport of the
> 2.4.0 gate-A20 code.
>
> This speeds up booting on my fast-A20 board (Celeron 500 MHz, no KBC)
> from 2 min:15 seconds to .
>
> Kai, you reported that your system was OK with
I think the way to go is to do the INT 15-first; possibly augmented with
a "test before even doing INT 15"...
-hpa
--
<[EMAIL PROTECTED]> at work, <[EMAIL PROTECTED]> in private!
"Unix gives you enough rope to shoot yourself in the foot."
http://www.zytor.com/~hpa/puzzle.txt
-
To
I think the way to go is to do the INT 15-first; possibly augmented with
a "test before even doing INT 15"...
-hpa
--
[EMAIL PROTECTED] at work, [EMAIL PROTECTED] in private!
"Unix gives you enough rope to shoot yourself in the foot."
http://www.zytor.com/~hpa/puzzle.txt
-
To
rdunlap wrote:
>
> Alan-
>
> Here's a patch to 2.2.19-pre7 that is essentially a backport of the
> 2.4.0 gate-A20 code.
>
> This speeds up booting on my fast-A20 board (Celeron 500 MHz, no KBC)
> from 2 min:15 seconds to .
>
> Kai, you reported that your system was OK with 2.4.0-test12-pre6.
Linus Torvalds wrote:
>
> On Tue, 5 Dec 2000, Linus Torvalds wrote:
> >
> > Right now this is my interim patch (to clean test11). The thing to
> note is
> > that I decreased the keyboard controller timeout by a factor of about
> 167,
> > while making the "delay" a bit longer.
>
> Oh, btw, I
Linus Torvalds wrote:
On Tue, 5 Dec 2000, Linus Torvalds wrote:
Right now this is my interim patch (to clean test11). The thing to
note is
that I decreased the keyboard controller timeout by a factor of about
167,
while making the "delay" a bit longer.
Oh, btw, I forgot to ask
rdunlap wrote:
Alan-
Here's a patch to 2.2.19-pre7 that is essentially a backport of the
2.4.0 gate-A20 code.
This speeds up booting on my fast-A20 board (Celeron 500 MHz, no KBC)
from 2 min:15 seconds to too small to measure by my wrist watch.
Kai, you reported that your system was
Hi Peter.
On Tue, 5 Dec 2000, H. Peter Anvin wrote:
> Linus Torvalds wrote:
>> Actually, I bet I know what's up.
>>
>> Want to bet $5 USD that suspend/resume saves the keyboard A20 state,
>> but does NOT save the fast-A20 gate information?
>>
>> So anything that enables A20 with only the fast
Hi Peter.
On Tue, 5 Dec 2000, H. Peter Anvin wrote:
Linus Torvalds wrote:
Actually, I bet I know what's up.
Want to bet $5 USD that suspend/resume saves the keyboard A20 state,
but does NOT save the fast-A20 gate information?
So anything that enables A20 with only the fast A20 gate will
Linus Torvalds wrote:
>
> On Wed, 6 Dec 2000, Miles Lane wrote:
> >
> > Here is what goes wrong:
> >
> > Dec 6 04:21:32 agate kernel: eth0: Host error, FIFO diagnostic register .
>
> But it continues to work, right?
>
> I bet that your ethernet card is just unhappy that it couldn't get
Linus Torvalds wrote:
On Wed, 6 Dec 2000, Miles Lane wrote:
Here is what goes wrong:
Dec 6 04:21:32 agate kernel: eth0: Host error, FIFO diagnostic register .
But it continues to work, right?
I bet that your ethernet card is just unhappy that it couldn't get DMA in
time,
Linus Torvalds wrote:
>
> On Wed, 6 Dec 2000, Miles Lane wrote:
>
>> Here is what goes wrong:
>>
>> Dec 6 04:21:32 agate kernel: eth0: Host error, FIFO diagnostic register .
>
>
> But it continues to work, right?
I'll check. My system only has 80MB RAM, and I run Mozilla, which
On Wed, 6 Dec 2000, Miles Lane wrote:
>
> Here is what goes wrong:
>
> Dec 6 04:21:32 agate kernel: eth0: Host error, FIFO diagnostic register .
But it continues to work, right?
I bet that your ethernet card is just unhappy that it couldn't get DMA in
time, because the bus was so
Hi Linus,
Thanks for the reply.
I agree with your analysis of the information I reported
in this message. However, in previous related bug reports
I mentioned actual functional conflicts between the drivers.
Here is what goes wrong:
Dec 6 04:21:32 agate kernel: eth0: Host error, FIFO
On Wed, 6 Dec 2000, Miles Lane wrote:
>
> If I insert both my 3c575 and Belkin BusPort Mobile USB host-controller
> and then enable both of them, "modprobe usb-ohci" hangs. If I then
> attempt "modprobe -r 3c59x", that process hangs, too. lsmod shows:
>
> usb-ohci 15072 1
"Richard B. Johnson" wrote:
>
> The protected-mode switch in INT 15 is probably the least tested BIOS
> function ever. I wouldn't trust it, and relying on it will put further
> burden on embedded Linux developers, many of whom don't even have a
> BIOS. It is 'least tested' because there is no
Alan Cox wrote:
>
> > INT 15-2401 disable A20
> > INT 15-2402 query status A20
> > INT 15-2403 query A20 support (kdb or port 92)
> >
> > IBM classifies these functions as optional, but it is enabled on a lot
> > of
> > new BIOS, no know conflicts, thus we can call this function to enable
> >
On Tue, 5 Dec 2000, Linus Torvalds wrote:
>
>
> On Wed, 6 Dec 2000, Kai Germaschewski wrote:
>
> >
> > On Tue, 5 Dec 2000, H. Peter Anvin wrote:
> >
> > > If you have had A20M# problems with any kernel -- recent or not --
> > > *please* try this patch, against 2.4.0-test12-pre5:
> >
> >
> INT 15-2401 disable A20
> INT 15-2402 query status A20
> INT 15-2403 query A20 support (kdb or port 92)
>
> IBM classifies these functions as optional, but it is enabled on a lot
> of
> new BIOS, no know conflicts, thus we can call this function to enable
> A20,
> check the result and only
"H. Peter Anvin" wrote:
>
>
> Good question. The whole thing makes me nervous... in fact, perhaps we
> should really consider using the BIOS INT 15h interrupt to enter
> protected mode?
>
Maybe it is better to try with INT15 AX=2400 (Enable A20 gate).
INT 15-2400 enable A20
INT 15-2401
I reported problems with using my two Cardbus cards simultaneously
with previous test12 releases. The behavior has changed with pre6.
#1
When I run "ifup eth0", I get an error message:
SIOCADDRT: File exists
SIOCADDRT: File exists
This happens even when my 3c575 Cardbus
On Tue, 5 Dec 2000, Linus Torvalds wrote:
> On Wed, 6 Dec 2000, Kai Germaschewski wrote:
>
> >
> > On Tue, 5 Dec 2000, H. Peter Anvin wrote:
> >
> > > If you have had A20M# problems with any kernel -- recent or not --
> > > *please* try this patch, against 2.4.0-test12-pre5:
> >
> > Just a
On Tue, 5 Dec 2000, Linus Torvalds wrote:
On Wed, 6 Dec 2000, Kai Germaschewski wrote:
On Tue, 5 Dec 2000, H. Peter Anvin wrote:
If you have had A20M# problems with any kernel -- recent or not --
*please* try this patch, against 2.4.0-test12-pre5:
Just a datapoint: This
I reported problems with using my two Cardbus cards simultaneously
with previous test12 releases. The behavior has changed with pre6.
#1
When I run "ifup eth0", I get an error message:
SIOCADDRT: File exists
SIOCADDRT: File exists
This happens even when my 3c575 Cardbus
"H. Peter Anvin" wrote:
Good question. The whole thing makes me nervous... in fact, perhaps we
should really consider using the BIOS INT 15h interrupt to enter
protected mode?
Maybe it is better to try with INT15 AX=2400 (Enable A20 gate).
INT 15-2400 enable A20
INT 15-2401 disable
INT 15-2401 disable A20
INT 15-2402 query status A20
INT 15-2403 query A20 support (kdb or port 92)
IBM classifies these functions as optional, but it is enabled on a lot
of
new BIOS, no know conflicts, thus we can call this function to enable
A20,
check the result and only after
On Tue, 5 Dec 2000, Linus Torvalds wrote:
On Wed, 6 Dec 2000, Kai Germaschewski wrote:
On Tue, 5 Dec 2000, H. Peter Anvin wrote:
If you have had A20M# problems with any kernel -- recent or not --
*please* try this patch, against 2.4.0-test12-pre5:
Just a datapoint: This
Alan Cox wrote:
INT 15-2401 disable A20
INT 15-2402 query status A20
INT 15-2403 query A20 support (kdb or port 92)
IBM classifies these functions as optional, but it is enabled on a lot
of
new BIOS, no know conflicts, thus we can call this function to enable
A20,
check the
"Richard B. Johnson" wrote:
The protected-mode switch in INT 15 is probably the least tested BIOS
function ever. I wouldn't trust it, and relying on it will put further
burden on embedded Linux developers, many of whom don't even have a
BIOS. It is 'least tested' because there is no way
On Wed, 6 Dec 2000, Miles Lane wrote:
If I insert both my 3c575 and Belkin BusPort Mobile USB host-controller
and then enable both of them, "modprobe usb-ohci" hangs. If I then
attempt "modprobe -r 3c59x", that process hangs, too. lsmod shows:
usb-ohci 15072 1
Hi Linus,
Thanks for the reply.
I agree with your analysis of the information I reported
in this message. However, in previous related bug reports
I mentioned actual functional conflicts between the drivers.
Here is what goes wrong:
Dec 6 04:21:32 agate kernel: eth0: Host error, FIFO
On Wed, 6 Dec 2000, Miles Lane wrote:
Here is what goes wrong:
Dec 6 04:21:32 agate kernel: eth0: Host error, FIFO diagnostic register .
But it continues to work, right?
I bet that your ethernet card is just unhappy that it couldn't get DMA in
time, because the bus was so busy.
Linus Torvalds wrote:
On Wed, 6 Dec 2000, Miles Lane wrote:
Here is what goes wrong:
Dec 6 04:21:32 agate kernel: eth0: Host error, FIFO diagnostic register .
But it continues to work, right?
I'll check. My system only has 80MB RAM, and I run Mozilla, which
pushes a lot of
Linus Torvalds wrote:
>
> On Tue, 5 Dec 2000, Linus Torvalds wrote:
> >
> > Right now this is my interim patch (to clean test11). The thing to note is
> > that I decreased the keyboard controller timeout by a factor of about 167,
> > while making the "delay" a bit longer.
>
> Oh, btw, I forgot
Alan Cox wrote:
>
> > Okay, here is my latest attempt to find a way to toggle A20M# that
> > genuinely works on all machines -- including Olivettis, IBM Aptivas,
> > bizarre notebooks, yadda yadda.
>
> Can I suggest a slightly different hammer. Flip the A20 via the keyboard
> controller and set
On Tue, 5 Dec 2000, Linus Torvalds wrote:
>
> Right now this is my interim patch (to clean test11). The thing to note is
> that I decreased the keyboard controller timeout by a factor of about 167,
> while making the "delay" a bit longer.
Oh, btw, I forgot to ask people to give this a whirl.
On Tue, 5 Dec 2000, H. Peter Anvin wrote:
>
> I might hack on using INT 15h to do the jump to protected mode, as ugly
> as it is, but I won't have time before my trip. It would require quite a
> bit of restructuring in setup.S, and would probably break LOADLIN.
Right now this is my interim
> Okay, here is my latest attempt to find a way to toggle A20M# that
> genuinely works on all machines -- including Olivettis, IBM Aptivas,
> bizarre notebooks, yadda yadda.
Can I suggest a slightly different hammer. Flip the A20 via the keyboard
controller and set the timeout to say 1 second.
Linus Torvalds wrote:
>
> Actually, I bet I know what's up.
>
> Want to bet $5 USD that suspend/resume saves the keyboard A20 state, but
> does NOT save the fast-A20 gate information?
>
> So anything that enables A20 with only the fast A20 gate will find that
> A20 is disabled again on resume.
On Wed, 6 Dec 2000, Kai Germaschewski wrote:
>
> On Tue, 5 Dec 2000, H. Peter Anvin wrote:
>
> > If you have had A20M# problems with any kernel -- recent or not --
> > *please* try this patch, against 2.4.0-test12-pre5:
>
> Just a datapoint: This patch doesn't fix the problem here (Sony
>
On Wed, 6 Dec 2000, Kai Germaschewski wrote:
>
> On Tue, 5 Dec 2000, H. Peter Anvin wrote:
>
> > If you have had A20M# problems with any kernel -- recent or not --
> > *please* try this patch, against 2.4.0-test12-pre5:
>
> Just a datapoint: This patch doesn't fix the problem here (Sony
>
On Tue, 5 Dec 2000, H. Peter Anvin wrote:
> If you have had A20M# problems with any kernel -- recent or not --
> *please* try this patch, against 2.4.0-test12-pre5:
Just a datapoint: This patch doesn't fix the problem here (Sony
PCG-Z600NE). Still the spontaneous reboot exactly the moment I
Linus Torvalds wrote:
>
> So the "orb $2,%al ; andb $0xfe,%al" will potentially change both of
> these. And I'd feel a hell of a lot more safe, if we avoided using 0x92
> except when we find that we absolutely _have_ to.
>
> How about making the keyboard controller timeouts shorter, and moving
On Tue, 5 Dec 2000, H. Peter Anvin wrote:
>
> Okay, here is my latest attempt to find a way to toggle A20M# that
> genuinely works on all machines -- including Olivettis, IBM Aptivas,
> bizarre notebooks, yadda yadda.
I really think that the 0x92 accesses are still unsafe.
I will bet that the
Okay, here is my latest attempt to find a way to toggle A20M# that
genuinely works on all machines -- including Olivettis, IBM Aptivas,
bizarre notebooks, yadda yadda.
The bizarre notebooks with broken SMM code are the ones I really worry
most about... there may very well be NO WAY to support
Okay, here is my latest attempt to find a way to toggle A20M# that
genuinely works on all machines -- including Olivettis, IBM Aptivas,
bizarre notebooks, yadda yadda.
The bizarre notebooks with broken SMM code are the ones I really worry
most about... there may very well be NO WAY to support
On Tue, 5 Dec 2000, H. Peter Anvin wrote:
Okay, here is my latest attempt to find a way to toggle A20M# that
genuinely works on all machines -- including Olivettis, IBM Aptivas,
bizarre notebooks, yadda yadda.
I really think that the 0x92 accesses are still unsafe.
I will bet that the
Linus Torvalds wrote:
So the "orb $2,%al ; andb $0xfe,%al" will potentially change both of
these. And I'd feel a hell of a lot more safe, if we avoided using 0x92
except when we find that we absolutely _have_ to.
How about making the keyboard controller timeouts shorter, and moving all
On Tue, 5 Dec 2000, H. Peter Anvin wrote:
If you have had A20M# problems with any kernel -- recent or not --
*please* try this patch, against 2.4.0-test12-pre5:
Just a datapoint: This patch doesn't fix the problem here (Sony
PCG-Z600NE). Still the spontaneous reboot exactly the moment I
On Wed, 6 Dec 2000, Kai Germaschewski wrote:
On Tue, 5 Dec 2000, H. Peter Anvin wrote:
If you have had A20M# problems with any kernel -- recent or not --
*please* try this patch, against 2.4.0-test12-pre5:
Just a datapoint: This patch doesn't fix the problem here (Sony
On Wed, 6 Dec 2000, Kai Germaschewski wrote:
On Tue, 5 Dec 2000, H. Peter Anvin wrote:
If you have had A20M# problems with any kernel -- recent or not --
*please* try this patch, against 2.4.0-test12-pre5:
Just a datapoint: This patch doesn't fix the problem here (Sony
Okay, here is my latest attempt to find a way to toggle A20M# that
genuinely works on all machines -- including Olivettis, IBM Aptivas,
bizarre notebooks, yadda yadda.
Can I suggest a slightly different hammer. Flip the A20 via the keyboard
controller and set the timeout to say 1 second. If
On Tue, 5 Dec 2000, H. Peter Anvin wrote:
I might hack on using INT 15h to do the jump to protected mode, as ugly
as it is, but I won't have time before my trip. It would require quite a
bit of restructuring in setup.S, and would probably break LOADLIN.
Right now this is my interim patch
On Tue, 5 Dec 2000, Linus Torvalds wrote:
Right now this is my interim patch (to clean test11). The thing to note is
that I decreased the keyboard controller timeout by a factor of about 167,
while making the "delay" a bit longer.
Oh, btw, I forgot to ask people to give this a whirl. I
Alan Cox wrote:
Okay, here is my latest attempt to find a way to toggle A20M# that
genuinely works on all machines -- including Olivettis, IBM Aptivas,
bizarre notebooks, yadda yadda.
Can I suggest a slightly different hammer. Flip the A20 via the keyboard
controller and set the
Linus Torvalds wrote:
On Tue, 5 Dec 2000, Linus Torvalds wrote:
Right now this is my interim patch (to clean test11). The thing to note is
that I decreased the keyboard controller timeout by a factor of about 167,
while making the "delay" a bit longer.
Oh, btw, I forgot to ask
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