[Xen-devel] Crash w/ bios="ovmf"

[Jason Dickens <jdickens@xxxxxxxxxxxxxx>]

I'm trying to find a solution to an immediate VM crash which occurs by 
simply adding "bios='ovmf' to my configuration?
I started with a standard Ubuntu install which contained Xen 4.6.0 and 
had the crash. The VM works fine booting w/ SeaBIOS once the 
configuration line is removed. It also works fine with OVMF using just QEMU.
Then I was led to believe that i needed to rebuild Xen with 
--enable-ovmf , using the source from apt-get source, this proved to be 
difficult and ultimately I had to disable stub domains to get it to 
work. (in case, that is relevant)
Still I get the crash almost immediately after the VM is launched. With 
sdl=1 I can see the window flash up and disappear.
I should mention that ultimately I plan to use a non-standard build of 
the OVMF kernel, but for now I'm happy to get it working with any one.
At this point, I have been studying the source to try and determine 
where things diverge. I find very little use of LIBXL_BIOS_TYPE_OVMF and 
can't find  exactly where setting hvm.bios that even matters?
In any case, I would appreciate help on how to avoid the crash and/or 
understanding the Xen modifications for OVMF.
Jason



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