Re: [Qemu-devel] storing machine data in qcow images?

[Andrea Bolognani]

On Thu, 2018-06-07 at 11:36 +0100, Daniel P. Berrangé wrote:
> On Thu, Jun 07, 2018 at 11:32:18AM +0100, Richard W.M. Jones wrote:
> > Another problem which Laszlo mentioned is the varstore isn't portable
> > between UEFI implementations, or if the UEFI is compiled with
> > different options.  You can even imagine shipping multiple
> > varstores(!) which argues for a tar-like format.
> 
> Could we perhaps imagine shipping the actual UEFI bios, rather
> than only the varstore.  The bios blob runs in guest context,
> so there shouldn't be able security concerns from hosting
> vendors with running user provided bios. Mostly its a matter
> of confidence that the interface between bios & qemu is stable
> which feels easier than assuming varstore vs different bios is
> portable.

That sounds sensible, and further reinforces the idea that we
need way more than a single string baked into the qcow2 file.

-- 
Andrea Bolognani / Red Hat / Virtualization