On Tuesday 10 January 2006 21:25, Jan Engelhardt wrote:
> An oops is usually a condition you can recover from in some/most/depends
> cases (e.g. a null deref in a filesystem "only" makes that vfsmount
> (filesystem at all?) blocked), so if the kernel is waiting for user input
> on a non-panic condition, this means userspace stops too, which is not
> too good if the kernel is still 'alive'.
> It's like we are entering kdb although everything is fine enough to go
> through a proper `init 6`.
-ENOPARSE
>
> >What would be also cool would be to fix the VGA console to have
> >a larger scroll back buffer. The standard kernel boot output
> >is far larger than the default scrollback, so if you get a hang
> >late you have no way to look back to all the earlier
> >messages.
> >
> >(it is hard to understand that with 128MB+ graphic cards and 512+MB
> >computers the scroll back must be still so short...)
>
> I doubt this scrollback buffer is implemented as part of the video cards.
> It is rather a kernel invention, and therefore uses standard RAM. But the
> idea is good, preferably make it a CONFIG_ option.
At least long ago (when I last looked) it was in video RAM.
>
> >And fixing sysrq to work after panics would be also nice.
>
> I am not sure, but would enabling interrupts be enough?
Interrupts are already enabled, but no - it's not.
Thank you for an useful contribution to the thread.
-Andi
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