> > Hi, Gerd and Juan. > > Thanks for your guides about the confuse live migration about changing the > keyboard buffer size. > According your suggestion, I got two solutions to address the issue: > > - Keep the data array 256 bytes long, change the rptr/wptr/count/data array at > post_load(), both > Ps/2 keyboard and mouse. This solution can be compatible with older qemu > versions, which can > do live migration each other. > > -Change the data array to 16 bytes, still save as PS2_QUEUE_SIZE. Reset the > rptr/wptr/count at > post_load(), both ps/2 keyboard and mouse. Add VMSTATE_UNUSED(256-16) in > struct vmstate_ps2_common. > This solution just save the 16 bytes buffer and drop the rest, So we can't > migrate vm to older qemu versions. > But migration from old qemu to new qemu is ok. > Sorry, the second solution also support cross-version live migration each other.
> I have tested the two solutions, but which one is better? Expect your reply. > Thanks! > Best regards, -Gonglei
