Hi Nate,
Nathaniel Villaume wrote:
Hi all,
I can't seem to find any info about Dual Xeon and Xenomai (well, ADEOS,
really). Is this a configuration that is expected to work? What about
smp Athlon? or DualCore Athlon? (I think Opteron is not in the picture
yet, right?)
For the dual Xeon, I'm able to patch and build fine, but boot stalls
after the hardware has been initialized by the init process.
(i.e. The last line I get from Fedora Core 3 Init 2.85 booting says:
Initializing hardware... storage network, audio done [ok])
I've done what I think are correct:
- turned off HyperThreading in both bios and in kernel config
- disabled REGPARM
The Processor family is set to Pentium 4 and sub arch is set to Generic
architecture (X86_GENERICARCH), but I've also tried Pc Compatible (X86)
to the same effect.
I used an adeos-r9 patch that came with RTAI,
Old Adeos series (i.e. "oldgen") had a design issue that caused such kind of
behaviour, especially on high-end systems with recent PCI hardware. This has been
fixed with the Adeos "I-pipe" series, so you should definitely boot your box with
one of those patches instead (1.1-03 is a good candidate).
I don't know if you are actually meaning RTAI, or Xenomai here, but in case it's
about Xenomai, you should stick with official Adeos patches [1] which are also
shipped with Xenomai distros unmodified. The RTAI project provides its own kernel
patches for working with their codebase since 3.2, but internally, Adeos as an
interrupt pipeline is not active in those actually.
and I at least got the
system to boot. But RTAI puked when loading the SMP scheduler....
Is there anything else I might do to make this work? What is the
confidence level in SMP support?
SMP support is fully maintained for both Adeos and Xeno, at the same level than UP
is. If you find something wrong there, we are going to fix it.
[1] http://download.gna.org/adeos/patches/v2.6/i386/
Thanks,
-Nate
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Philippe.
