On Mo, 2016-02-22 at 22:12 +0200, Michael S. Tsirkin wrote: > On Mon, Feb 22, 2016 at 03:26:56PM +0100, Gerd Hoffmann wrote: > > On Mo, 2016-02-22 at 14:41 +0200, Michael S. Tsirkin wrote: > > > Useful to send guest data back to QEMU. > > > > Use case? > > > > cheers, > > Gerd > > VM GEN ID at least wants to pass address of some blob > in guest memory to host. > > Apparently, that's also useful for nvdimm. > > A reasonable way to do that seems to be to write it into > fw cfg file, this way it's also migrated automatically.
Both seem to be about acpi aml code talking to qemu backend. Not sure fw_cfg files are reasonable for that, given that you have to fetch the directory listing, parse it to figure the entry index, ... I want see a patch actually using that before going to merge it. cheers, Gerd
