On Wed, 5 Feb 2014, Paolo Bonzini wrote: > Il 05/02/2014 17:54, Stefano Stabellini ha scritto: > > > > I'm not sure how this is related to fw_cfg? fw_cfg is just a simple > > > key-value > > > > store. If hvmloader doesn't use it, it should be a burden. > > I was referring to the fact that QEMU might not have all the info that > > need to be written to fw_cfg when running on Xen: some of the info might > > be in the hypervisor and some other in another QEMU instance. > > Or do you think that fw_cfg could be written by multiple entities > > simultaneously? > > Wouldn't it be possible to fetch the necessary information via hypercalls or > in xenstore?
Probably, at least for the single QEMU case. > It's possible that some particular fw_cfg entries will be skipped for Xen, but > most of them should apply. fw_cfg support would also make it possible to use > -kernel/-initrd in Xen HVM machines, for example.
