RE: [Xen-devel] Run X in other domains?

[Ian P. <m+I...@cl...>]

> Initially I made some progress with the pre-built kernel=20
> binaries (from the current 2.0.5 release).  The xenU kernel=20
> lacks PCI support, and X reports "Cannot open /dev/tty0"=20
> using it in domain 1.  I switched to the xen0 kernel for PCI=20
> support, and then X reported "Cannot find a free VT".
>=20
> The output from lspci lists everything but the VGA card in=20
> domain 0, unless "lspci -H 1" is used.  In other domains,=20
> lspci reports only the VGA card and "lspci -H 1" reports "You=20
> need to be root to have access to I/O ports".  However X=20
> still starts OK in domain 0, which surprised my.
> I've confirmed that "xm dmesg" includes "Hiding PCI device=20
> 01:00.0 from DOM0" after passing "physdev_dom0_hide=3D01:00.1" to Xen.

I can see how you could start a very simple VGA-only Xserver -- by
default dom0 happens to have access to the bottom 1MB of memory, which
is enough to get a VGA Xserver working.
=20
> I've followed Ian's advice, rebuilding Linux 2.6.10 with the=20
> default xenU configuration eith XEN_PHSDEV_ACCESS added (to=20
> automatically enable
> DUMMY_CONSOLE) plus PCI support.  However my kernel crashes=20
> immediately after "Freeing unused kernel memory", even when I=20
> pass "xencons=3DttyS".
> Perhaps the build broke somehow, or it's configuration is invalid?

I think you'll need to look through the oops message to see what's going
on.
You could try setting xencons=3Doff just to rule xencons out.

I presume you've granted the PCI device to the other domain in it's
config file?=20

Ian