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[Xen-devel] xen/dom0 console problems

To: xen-devel@xxxxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] xen/dom0 console problems
From: "MAGENHEIMER,DAN (HP-FtCollins,ex1)" <dan.magenheimer@xxxxxx>
Date: Thu, 25 Mar 2004 15:56:50 -0500
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I'm trying out some of the (not-so-new) console stuff
on the unstable tree and having a heckuva time trying
to get what I want:

1a) All Xen boot output and all dom0 boot output on
  the vga screen, or
1a) All Xen boot output and all dom0 boot output on com1, or
1b) All Xen boot output on vga and all dom0 boot output
  on com1
2) The ability to use the Xen "handlers" (e.g. to press
  "D" to get to the debugger)
3) pdb communication on com1 (or com2 for case 1a or 1b)

I was using "ser_baud=9600nr8 pdb=com1" on the Xen
command line and "console=xencons0 console=ttyS0" for
xenolinux before and all this worked (and continues to
work, except for the warning that ser_baud is deprecated);
output going both to vga and com1 and I was able to
use ctrl-A-ctrl-A-ctrl-A-D over com1 to get to the
debugger.  I was going to move pdb to com2 and decided
to switch over to the newer (non-deprecated) syntax first,
but none of the obvious
command line options seems to get me where I was before!
I didn't write down all the different options I tried,
but if I was able to get Xen/dom0 boot output, I wasn't
able to get to any Xen handlers; and in many cases
I wasn't able to get dom0 boot output (or in some cases
even xen boot output) even though I was using what
I expected to be the obvious right way (e.g. console=com1
console=vga or no com= option for Xen, console=xencons0
console=ttyS0 (or tty0) for xenolinux).

I haven't yet gotten to any of the new console stuff for
non-dom0 domains... all of this is just with Xen and
domain0.

Thanks for any suggestions/help!
Dan


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