RE: [Xen-devel] Re: problems with console in domU if physdev access enabled

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

> > > I am trying to build a working domU kernel with 
> > > CONFIG_XEN_PHYSDEV_ACCESS=y. But
> > > if this enabled, domU fails to boot with different errors 
> > > about the console.
> > > With kernel 2.6.10 and xen 2.0.5 this error occurs if I try 
> > > to start the Domain:
> > > ..
> > > WARNING: Failed to register Xen virtual console driver as 'tty1'
> > > ..
> > > Warning: unable to open an initial console.
> > > Unable to handle kernel NULL pointer dereference at virtual 
> > 
> > It sounds like you might be building in a serial UART 
> (8250) into your
> > domU kernel which is grabbing the tty.
> 
> CONFIG_SERIAL_8250 was not set, I've also tried with set it 
> to y, but it makes
> no difference.
> 
> It would be very helpful if someone who use xen with 
> physdev-access enabled
> could send me his/her kernel-config.

If you post the full boot messages it will probably be possible to spot
what you're doing wrong.

Ian


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