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xen-ppc-devel
RE: [XenPPC] systemsim-gpul problems
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Whad'ya know...if you wait long enough it works!
Thanks Mark.
Sorry, I should have read your
note more carefully. Yes, my latest builds do boot all the way into
Linux, but the timing is drastically altered from the past. There are
places in the boot sequence (and I think what you mention: after protocol
family 17 is one of them) where you must wait a VERY long time for something
to happen. I can't tell you exactly how long, but it took me a while and
accidental inattention to what was happening before I discovered this. I
have not had time to work on why this is so. Also, if you do get all the
way to a Linux command prompt, you may conclude it is not responding to
commands. Just type a command that you think should work (such as pwd),
hit Enter, and then WAIT A LONG TIME. If your experience turns out to be
like mine, eventually the characters you typed will be echoed and the command
will be executed with proper output, however slowly. Obviously, more
debugging is needed. Maybe it's something simple, like some simulator
option for how real time is reflected to the simulated machine. Maybe
you will be rewarded by a little (or a LOT of) patience in your next
try.
Mark Mergen
----- Forwarded by Mark F
Mergen/Watson/IBM on 01/04/2007 05:15 PM -----
| Mark F
Mergen/Watson/IBM
01/04/2007 05:12 PM
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To
| hollisb@xxxxxxxxxxxxxxxxxx
|
|
cc
| Yoder Stuart-B08248
<stuart.yoder@xxxxxxxxxxxxx>,
xen-ppc-devel@xxxxxxxxxxxxxxxxxxx
|
|
Subject
| Re: [XenPPC] systemsim-gpul
problemsLink |
|
I pull only from xenppc-unstable.hg and
linux-ppc-2.6.hg. I'm up to date with all latest that was pushed to
them, and this combo runs on systemsim-gpul. There was a bug(s?) that
caused symptoms like you mention, but they were fixed by Amos Waterland about
2nd week in December, and pushed to aformentioned repositories by the
maintainers. I can't quote or vouch for specific changesets.
Mark Mergen
hollisb@xxxxxxxxxxxxxxxxxx
Sent by:
xen-ppc-devel-bounces@xxxxxxxxxxxxxxxxxxx
01/04/2007 03:11 PM
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Please respond
to
hollisb@xxxxxxxxxxxxxxxxxx |
|
|
To
| Yoder Stuart-B08248
<stuart.yoder@xxxxxxxxxxxxx>
|
|
cc
| xen-ppc-devel@xxxxxxxxxxxxxxxxxxx
|
|
Subject
| Re: [XenPPC] systemsim-gpul
problems |
|
On Thu, 2007-01-04 at 10:32 -0700, Yoder Stuart-B08248 wrote:
>
I've been trying to get systemsim-gpul working with the
> latest
Xen-PPC.
>
> The last changeset that worked was 7ad4645e7a54
(11/22/06).
>
> Changeset ce8c1e26b2ae (Early boot memory
avoidance improvemnts)
> broke the simulator with the 'Could not
allocate RTAS tree' / HANG
> error.
>
> With changeset
878ce1f78ad3 (Fix systemsim-gpul failure to boot)
> and later changesets
the RTAS allocation / HANG problem is fixed
> but the simulator still
won't boot into Linux.
>
> If I compare logs of the working and
non-working Xen/Linux runs
> in the simulator, with the current Xen
Linux hangs near the end
> of its boot. Last messages from Linux
are:
>
> i2c /dev entries driver IPv4 over IPv4
tunneling driver
> TCP bic registered
>
NET: Registered protocol family 1
> NET: Registered
protocol family 17
>
> ...then nothing.
>
> Shortly
after this point in the boot is where the RAMDISK is
> decompressed and
accessed. I'm wondering if the boot related memory
> improvements
have affected a RAMDISK built into Linux and Xen.
Have you tried
attaching GDB to systemsim to figure out what's going on?
> Has
anyone else had recent changesets working on the simulator?
I haven't
tried simulator in quite some time...
--
Hollis Blanchard
IBM
Linux Technology
Center
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