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RE: [Xen-ia64-devel] Done with the compilation, a few questions remain


  • To: "Ricardo A Staudt" <ricardost@xxxxxxxxxxxxx>, <xen-ia64-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Magenheimer, Dan (HP Labs Fort Collins)" <dan.magenheimer@xxxxxx>
  • Date: Fri, 3 Jun 2005 11:50:03 -0700
  • Delivery-date: Fri, 03 Jun 2005 18:50:05 +0000
  • List-id: DIscussion of the ia64 port of Xen <xen-ia64-devel.lists.xensource.com>
  • Thread-index: AcVoZDI6QMsI1Br4TRqcGirEa/pSCAAB/aZA
  • Thread-topic: [Xen-ia64-devel] Done with the compilation, a few questions remain

> 1) We haven't really tested it but is it possible to compile the Xen 
> kernel with 32bit software support? There are some regular Linux 
> 32bit-only apps that we ran on ia64 with the common ia64 
> kernel but not 
> with Xen's the way we regularly build it.

No, CONFIG_IA32_SUPPORT does not work.  There is at least one ia32
register that needs virtualization and all of the ia32 state
save/restore
is either missing or has never been tested.  It's possible that
it could be made to work, but I don't think anyone is working
on it (or planning to work on it).

> 2) For some reason, when the Xen kernel is booted, no system 
> message is 
> displayed at all. When it starts booting we get the Penguin 
> and no text 
> then, after a while, we get the login prompt, same thing we any other 
> system message. All other distribution kernels we used worked 
> well, we 
> suppose it has to do with the system log output (aiming at 
> the serial or 
> some other place) or something.

The boot output from Xen is going to a different place, depending
on what you specified for the console.  Specifying console=vga
for domain0 may show you the Linux output, but may cause problems
for Xen (I think it works on Intel boxes but hasn't been tested
on HP boxes).

All of the console stuff will change shortly due to upstream changes
from Xen/x86.  More on that shortly.

Dan

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