[Cbe-oss-dev] CELL SDK 2.1's dmabench + 2.6.23-rc3 (geoff/ps3-linux.git) = ps3 hangs

[Goffredo Marocchi]

The thread's first post can be found here:

http://ozlabs.org/pipermail/cbe-oss-dev/2007-August/003151.html

I apologize for having split the thread in two (I realize this current
thread seems to lack background as it stands on its own two legs).

Brief summary: stock 2.6.22.x.fc7 kernel --> CELL SDK 2.1's dmabench
== segfault.

# cat /etc/redhat-release
Fedora release 7 (Moonshine)

# uname -ra
Linux IGGS-PS3 2.6.23-rc3-g966fd9c0 #1 SMP Sat Aug 25 10:49:23 CEST
2007 ppc64 ppc64 ppc64 GNU/Linux

Geoff's kernel --> CELL SDK 2.1's dmabench == works if only up to 4
SPE's are used,  but crashes the PS3 when --numspe is set to 5 (which
makes me think some DMA operation is writing somewhere where it should
not be writing in XDR memory  [maybe where the kernel is loaded at]
thus crashing the system).

Thanks for your patience,

Goffredo Marocchi