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Re: [Xen-devel] [PATCH v2] hvmloader, libxl: use the correct ACPI settings depending on device model

On Wed, Jul 26, 2017 at 11:56:55AM +0100, Igor Druzhinin wrote:
> On 26/07/17 08:31, Roger Pau Monné wrote:
> > On Tue, Jul 25, 2017 at 08:55:30PM +0100, Igor Druzhinin wrote:
> >> We need to choose ACPI tables and ACPI IO port location
> >> properly depending on the device model version we are running.
> >> Previously, this decision was made by BIOS type specific
> >> code in hvmloader, e.g. always load QEMU traditional specific
> >> tables if it's ROMBIOS and always load QEMU Xen specific
> >> tables if it's SeaBIOS.
> >>
> >> This change saves this behavior but adds an additional way
> >> (xenstore key) to specify the correct device model if we
> >> happen to run a non-default one. Toolstack bit makes use of it.
> > 
> > Should there also be a change to libxl to allow selecting rombios
> > with qemu-xen or seabios with qemu-trad?
> > 
> It's already there (see libxl__domain_build_info_setdefault()).

Current code in libxl__domain_build_info_setdefault will prevent you
from selecting qemu-xen and rombios or qemu-trad and seabios (grep
for "Enforce BIOS<->Device Model version relationship"), hence me
asking if this should be lifted, so the new combinations that this
patch seems to allow are available from libxl/xl.


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