tree ef095af380ee8cdf3ed85e514b12f3c909db50e9
parent c1d23eaccc5020bb546a4391a0b2abf8ee861923
author Donald Dutile <ddutile@redhat.com> 1316633111 -0400
committer Anthony Liguori <aliguori@us.ibm.com> 1316793334 -0500

pci-devfn: check that device/slot number is within range

Need to check that guest slot/device number is not > 31 or walk off
the devfn table when checking if a devfn is available or not in a guest.

before this fix, passing in an addr=abc  or addr=34,
can crash qemu, sometimes fail gracefully if data past end
of devfn table fails the availability test.

with this fix, get clean error:
Property 'pci-assign.addr' doesn't take value '34'

also tested when no addr= param passed for guest (pcicfg) address,
and that worked as well.

Signed-off-by: Don Dutile <ddutile@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>