* linux-2.4.19-pre9-ac3: PnPBIOS crash
@ 2002-05-31 22:08 Chris Rankin
2002-06-01 0:00 ` Alan Cox
0 siblings, 1 reply; 2+ messages in thread
From: Chris Rankin @ 2002-05-31 22:08 UTC (permalink / raw)
To: linux-kernel
Hi,
I have a dual PIII machine with 1.25 GB of RAM, and I have just
installed a 2.4.19-pre9-ac3 kernel. (I also have ALSA CVS and lm
sensors 2.6.3 installed.)
Anyway, I decided to compile in the PNPBIOS feature and discovered
that:
# cat /proc/bus/pnp/escd
is a synonym for "cold reboot". Now I understand that *writing* to
random /proc files is a Bad Thing, but reading them??? I would have
thought that the worst I could have done would have been corrupting my
termininal. Is the escd file my actual ESCD area?
Is this a bug, or just a case of "don't do that!"?
Cheers,
Chris
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: linux-2.4.19-pre9-ac3: PnPBIOS crash
2002-05-31 22:08 linux-2.4.19-pre9-ac3: PnPBIOS crash Chris Rankin
@ 2002-06-01 0:00 ` Alan Cox
0 siblings, 0 replies; 2+ messages in thread
From: Alan Cox @ 2002-06-01 0:00 UTC (permalink / raw)
To: Chris Rankin; +Cc: linux-kernel
On Fri, 2002-05-31 at 23:08, Chris Rankin wrote:
> I have a dual PIII machine with 1.25 GB of RAM, and I have just
> installed a 2.4.19-pre9-ac3 kernel. (I also have ALSA CVS and lm
> sensors 2.6.3 installed.)
>
> Anyway, I decided to compile in the PNPBIOS feature and discovered
> that:
>
> # cat /proc/bus/pnp/escd
>
> is a synonym for "cold reboot". Now I understand that *writing* to
> random /proc files is a Bad Thing, but reading them??? I would have
> thought that the worst I could have done would have been corrupting my
> termininal. Is the escd file my actual ESCD area?
>
> Is this a bug, or just a case of "don't do that!"?
Could be either. It should dump the ESCD by asking the BIOS for it. It
could be there is a case we are calling wrong, could be a BIOS bug where
the BIOS can't handle BIOS32 ESCD
Alan
^ permalink raw reply [flat|nested] 2+ messages in thread
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2002-05-31 22:08 linux-2.4.19-pre9-ac3: PnPBIOS crash Chris Rankin
2002-06-01 0:00 ` Alan Cox
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