Re: [Xen-devel] Xen Paravirt Operations Domain 0 Serial Console Problem

["Mr. Teo En Ming (Zhang Enming)" <enming.teo@xxxxxxxxxxxxxxx>]

Dear Pasi,

How do I disable the VGA display adapter? Stop the vga card kernel 
module from loading? Add it to /etc/modprobe.d/blacklist.conf? Under 
pv-ops dom 0, there is no nouveau kernel module. And nvidia kernel 
module cannot work in pv-ops dom 0 too.
How do I disable all the various tty from 1 to 7?

I still need to leave ttyS0 enabled, as I need the serial console.

As for hiding vga card from dom 0, I cannot use pciback as I am using 
pv-ops dom 0. I need to use pci-stub.
--
Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics Engineering) 
BEng(Hons)(Mechanical Engineering)
Technical Support Engineer
Information Technology Department
Asiasoft Online Pte Ltd
Tampines Central 1 #04-01 Tampines Plaza
Singapore 529541
Republic of Singapore
Mobile: +65-9648-9798
MSN: teoenming@xxxxxxxxxxx
Alma Maters: Singapore Polytechnic, National University of Singapore



On 08/25/2009 01:57 AM, Pasi Kärkkäinen wrote:
> On Tue, Aug 25, 2009 at 01:34:54AM +0800, Mr. Teo En Ming (Zhang Enming) wrote:
>    
> > Dear Pasi,
> >
> > Thanks for your help! It works!
> >
> > I wonder why this didn't work:
> >
> > title Fedora (2.6.31-rc6-enming.teo) Serial Console
> >          root (hd0,0)
> >          kernel /xen.gz iommu=1 com1=115200,8n1 console=com1
> >          module /vmlinuz-2.6.31-rc6-enming.teo ro
> > root=/dev/mapper/vg_fedora11_host-lv_root selinux=0 console=ttyS0,115200
> >          module /initrd-2.6.31-rc6-enming.teo.img
> >
> > And this worked:
> >
> > title pv_ops dom0-test (2.6.29-rc7-tip) with serial console
> >          root (hd0,0)
> >          kernel /xen-3.3.gz dom0_mem=1024M loglvl=all guest_loglvl=all
> >          com1=19200,8n1 console=com1
> >          module /vmlinuz-2.6.29-rc7-tip ro root=/dev/vg00/lv01 console=hvc0
> >          earlyprintk=xen
> >          module /initrd-2.6.29-rc7-tip.img
> >
> > Anyway, I still got a tty1 output! I thought that after using serial
> > console, it is not supposed to output to a monitor anymore?
> >
> >      
> Well you still haven't disabled the VGA display adapter..
> And most probably you still have gettys configured aswell.
>
>    
> > As a result of this, I still can't hide the VGA card from dom 0 and pass it
> > through to the Windows Dom U.
> >
> >      
> See: http://wiki.xensource.com/xenwiki/VTdHowTo
>
> Especially the section "Binding at Boot-Time".
>
> -- Pasi
>
>    
> > Any ideas?
> >
> > --
> > Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics Engineering)
> > BEng(Hons)(Mechanical Engineering)
> > Technical Support Engineer
> > Information Technology Department
> > Asiasoft Online Pte Ltd
> > Tampines Central 1 #04-01 Tampines Plaza
> > Singapore 529541
> > Republic of Singapore
> > Mobile: +65-9648-9798
> > MSN: teoenming@xxxxxxxxxxx
> > Alma Maters: Singapore Polytechnic, National University of Singapore
> >
> >
> >
> > On 08/25/2009 12:44 AM, Pasi Kärkkäinen wrote:
> >      
> > > On Tue, Aug 25, 2009 at 12:17:53AM +0800, Mr. Teo En Ming (Zhang Enming)
> > > wrote:
> > >
> > >        
> > > > Hi All,
> > > >
> > > > I have tried to configure serial console for Xen hypervisor, dom 0
> > > > kernel and Linux login but it does not seem to be working.
> > > >
> > > > Here is my grub configuration for serial console:
> > > >
> > > > title Fedora (2.6.31-rc6-enming.teo) Serial Console
> > > >          root (hd0,0)
> > > >          kernel /xen.gz iommu=1 com1=115200,8n1 console=com1
> > > >          module /vmlinuz-2.6.31-rc6-enming.teo ro
> > > > root=/dev/mapper/vg_fedora11_host-lv_root selinux=0 console=ttyS0,115200
> > > >          module /initrd-2.6.31-rc6-enming.teo.img
> > > >
> > > >
> > > >          
> > > http://wiki.xensource.com/xenwiki/XenParavirtOps
> > >
> > > paste from that page:
> > >
> > >
> > > Working example grub.conf with serial console output:
> > >
> > > title pv_ops dom0-test (2.6.29-rc7-tip) with serial console
> > >          root (hd0,0)
> > >          kernel /xen-3.3.gz dom0_mem=1024M loglvl=all guest_loglvl=all
> > >          com1=19200,8n1 console=com1
> > >          module /vmlinuz-2.6.29-rc7-tip ro root=/dev/vg00/lv01
> > >          console=hvc0 earlyprintk=xen
> > >          module /initrd-2.6.29-rc7-tip.img
> > >
> > >
> > >
> > >        
> > > > Is the above configuration correct? On my Intel Desktop Board DQ45CB, I
> > > > have a COM1 header on the PCB and I have connected an external serial
> > > > port to this header and also enabled COM1 in the BIOS.
> > > >
> > > > After selecting the above entry in GRUB still on VGA, a cursor at the
> > > > top left corner of the monitor shows up, which means Xen and Dom 0
> > > > kernel are booting up on the serial console and not on VGA.
> > > >
> > > > However, after some time, a login prompt finally displays on my VGA
> > > > monitor! Isn't it NOT supposed to show up on VGA and should show up in
> > > > serial console instead?
> > > >
> > > >
> > > >          
> > > You also need to have the gettys configured properly.
> > >
> > > -- Pasi
> > >
> > >        
> >      


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