Benjamin Herrenschmidt wrote:

quoted

FYI I built 2.4.14-pre2-ben0 out of rsync about 2 hours ago and it seems
to be working. It does get some IDE errors about lost IRQs during bootup
that didn't happen with 2.4.13-ben0. Eventually it said "ide0: reset"
and now appears to be working normally. This is on a Powebook G4.

That's absolutely not normal. Can you send me a dmesg log of this
situation ? The ide:reset will have disabled DMA, thus causing your
to be very slow.

Yep - I've attached the log below.

If you re-enable DMA later one (hdparm -d1 /dev/hda), to you again
get lost IRQs & ide reset or does it stick ?

Re-enabling DMA causes the same messages and another reset.

BTW, thanks so much for all the wonderful work you do on linux-ppc. I am
very impressed with how well my Powerbook runs - particularly with the
PMU and Airport support. I get better battery life under Linux than OS X!

regards

Bryce.