On Mon, Mar 20, 2017 at 01:02:10PM +0100, Philipp Hahn wrote: > Hello Marcelo, cc:qemu, > > Sorry for re-using this old thread, but I have a problem loading some > saved state from qemu-kvm-1.1.2, which fails for piix4_pm. > > You following patch was committed as > <http://git.qemu-project.org/?p=qemu.git;a=commitdiff;h=b0b873a07872f7ab7f66f259c73fb9dd42aa66a9>: > > Am 15.11.2012 um 01:11 schrieb Marcelo Tosatti: > > Migrate 16 bytes for en/sts fields (which is the correct size), > > increase version to 3, and document how to support incoming > > migration from qemu-kvm 1.2. > > I my case qemu-kvm-1.1.2/hw/acpi_piix4.c:284 > | VMSTATE_STRUCT(ar.gpe, PIIX4PMState, 2, vmstate_gpe, ACPIGPE), > only saves 4 bytes, not 16 bytes. Hi Philipp, IIRC qemu-1.1.2 saved 16 bytes, which is the correct size, not 4 bytes. So while merging from qemu-kvm -> qemu, it was decided to maintain backwards compability with qemu, and not qemu-kvm. Is there any way to differentiate between the two (qemu vs qemu-kvm, perhaps via some other field not in the VMState of ACPI PIIX4), so your patch can be integrated upstream?
