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

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

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

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:
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...


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?
Does it make sense without modification to hvmloader?
Thanks for any reply.

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