Re: [Xen-devel] [PATCH V3 2/5] Config.mk: update OVMF changeset

[Fabio Fantoni <fabio.fantoni@xxxxxxx>]

Il 31/10/2013 11:03, Wei Liu ha scritto:
> On Thu, Oct 31, 2013 at 10:47:24AM +0100, Fabio Fantoni wrote:
> > Il 30/10/2013 16:58, Wei Liu ha scritto:
> > > On Wed, Oct 30, 2013 at 04:52:52PM +0100, Fabio Fantoni wrote:
> > > [...]
> > > > I also tried another build without change qemu repo and changet but
> > > > same result.
> > > > Do you have domUs working on ovmf? If yes what are differences from
> > > > my test system?
> > > >
> > > > I tried to change also domU parameters:
> > > > - removing audio, vdagent and usb redirection it changes nothing.
> > > > - switch from stdvga to cirrus vga solves the performance problem,
> > > > but with Precise it shows always a black screen after start of
> > > > grub-efi entry, and black screen also with windows 7 installer.
> > > >
> > > > What domU vga you used on your tests?
> > > Cirrus, because there's cirrus driver in OVMF. I don't know whether
> > > there is driver for stdvga.
> > >
> > > Black screen is expected because there's probably something wrong with
> > > OVMF / Xen. I need to check real hardware behavior to identify the
> > > problem.
> > >
> > > > I'm trying to setup ovmf serial console, but I have no idea on where
> > > > to start from. Do you have some suggestions?
> > > Add serial='pty' in you HVM guest config file. I believe you can get a
> > > tutorial on wiki.xen.org
> > >
> > > Wei.
> > Thanks and sorry for the stupid question.
> > Precise's boot stops with calltrace, log on attachment.
> > I'll try also with latest ubuntu version (Saucy) with newer kernel
> > (3.11) and with latest stable qemu version (1.6.1).
> >
> > > > Thanks for any reply.
> > > >
> > > > > > > > If you need more informations and/or tests tell me and I'll do/post them.
> > > > > > > >
> > > > > > > > About legacy bios support that I mentioned days ago I found this
> > > > > > > > document about:
> > > > > > > > http://code.coreboot.org/p/seabios/source/tree/master/README.CSM
> > > > > > > > Seem that need ovmf change (and probably also on hvmloader) that are
> > > > > > > > not able to do.
> > > > > > > >
> > > > > > > > Thank for any reply and sorry for my bad english.
> > This idea could be enable legacy bios and vgabioses support on
> > ovmf... Is that really stupid question to not deserve an aswer?
> > Thanks for any reply.
> I think we need to wait until this happens in upstream.
>
> As for the guest log, I don't have a clear idea whether it is caused by
> OVMF at this stage. Null pointer deference looks just like a normal bug
> but I'm not sure whether it is caused by OVMF setting up the wrong thing
> very far ahead...
>
> Wei.
I tried with saucy and it boot but has graphic performance issue and no 
mouse.
About windows problem it is probably due to a missed cirrus driver on 
windows 7.
The only other option that I found should be try with stdvga but seem it 
needs legacy vgabios from csm.
What if I try to add ovmf patches for legacybios (that seems to have 
also memory patch) from this git?
http://git.infradead.org/users/dwmw2/edk2.git
Does it make sense without modification to hvmloader?
Thanks for any reply.

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