For old kernels (< 3.1), here is a console issue - if the very last
byte of the spapr-vty's "reg" property is not equal to zero, then it
will not appeared as 'hvc0' which is expected. So made a workaround
here to slove this problem. Details:
http://lists.gnu.org/archive/html/qemu-ppc/2013-10/msg00129.html
For old kernels (< 3.1), here is a console issue - if the very last byte of the spapr-vty's "reg" property is not equal to zero, then it will not appeared as 'hvc0' which is expected. So made a workaround here to slove this problem. Details: http://lists.gnu.org/archive/html/qemu-ppc/2013-10/msg00129.html