In an mprotect call the flags PROT_GROWSDOWN and PROT_GROWSUP can be
defined. Currently qemu returns an EINVAL as soon as one of these is
found, which breaks some programs (especially mplayer).
As far as I can tell it is safe to ignore these flags and just go on as
if nothing happened. To be on the safe side a warning message to the
user is thrown though.

Is there anything wrong with ignoring these? Should they be implemented
properly? Comments appreciated.

Alex