Thanks Dan and Graham.
I am in the process of switching to 2.2.14. But, just for your knowledge, my
bug was fixed by turning off the Copy-Back Data Cache fixed my problem.
Now, back to my move to 2.2.14.
Thank you again,
Julia
-----Original Message-----
From: Julia Elbert [mailto:jelbert at enerdyne.com]
Sent: Tuesday, September 26, 2000 9:59 AM
To: 'Dan Malek'; 'linuxppc-embedded at lists.linuxppc.org'
Subject: RE: switching linux kernels
Hi Dan,
We don't need caching, can we turn it off?
Thanks.
-----Original Message-----
From: Dan Malek [mailto:dan at mvista.com]
Sent: Tuesday, September 26, 2000 8:55 AM
To: Julia Elbert
Cc:
'linuxppc-embedded at lists.linuxppc.org'
Subject: Re: switching linux kernels
Julia Elbert wrote:
> I am switching to HardHat
2.2.13 from ppc
2.2.13.
> .....whatsoever, just the data is
corrupted some how.
Depending upon the flavor of the day ppc
2.2.13, it could be
a cache
configuration difference. The old 2.2.13
kernels often had
the data
cache in the write-through mode to avoid a
variety of bugs
in both
hardware and software.
The HHLinux 2.2.13 (and all later kernels)
run with
copy-back data
cache and subsequent silicon errata fixes,
so there may be a
cache
coherency hole in the way your driver
manages it's space.
-- Dan
** Sent via the linuxppc-embedded mail list.
See
http://lists.linuxppc.org/
** Sent via the linuxppc-embedded mail list. See
http://lists.linuxppc.org/
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
