Re: enable_ioapic_irq broken in arch/i386/kernel/irq.c

David Woodhouse (Dave@imladris.demon.co.uk)
Tue, 21 Apr 1998 21:05:43 +0200

claus@momo.math.rwth-aachen.de said:
> Hi!
> I think I have found a bug in enable_ioapic_irq() in arch/i3886/kernel/
> irq.c (all(?) 2.1.* kernel versions up to 2.1.97), Dual PII system.

> Symptoms:

> The system freezes when using ide devices and SCSI devices at the same
> time; it freezes more often with slow devices (e.g. when copying data
> from an IDE cdrom to the SCSI disk)

I am also suffering from this. Copying from an IDE cdrom to SCSI disk will
reliably lock the system hard.

I can also lock the system by grabbing video at high frame rates, which is only
hitting the SCSI drive (aic7xxx). I couldn't prove that it's not the frame
grabber, though.

Is your fix still working OK, and could anyone tell us why it was originally
defined out?

---- ---- ----
David Woodhouse, Robinson College, CB3 9AN, England. (+44) 0976 658355
Dave@imladris.demon.co.uk http://www.imladris.demon.co.uk
finger pgp@dwmw2.robinson.cam.ac.uk for PGP key.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu