On Tue, 26 Dec 2000, Benjamin Herrenschmidt wrote:

quoted

Note that there can be other problems with the mesh as well: I remember

I once

quoted

had some early 2.3.x kernels that could not init the mesh when cold-booted,
only when warm-booted. So I had to boot an older kernel first each time I had
powered down my box :-)

There were issues with powering up the MESH on some powerbooks that were
fixed some time ago, but maybe your issue is unrelated.

Yes, since I don't have a Powerbook, but a LongTrail.

Looking at Darwin's MESH driver, they have a whole bunch of workarounds
for known issues (either with common device protocol errors, or MESH
internal races).

I still see the

    mesh: halt_dma: data_ptr=-256 (nb=20736, ms=c06ff278)

(i.e. the DMA ptr shows it did 256 bytes too much), but I never noticed any
file corruption during the 3.5 years I've been using this machine. Let's call
it a harmless hardware bug.

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds


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