On 03/14/2012 12:52 PM, Wen Congyang wrote: > > > >> If so, is this channel visible to guest userspace? If the channle is > >> visible to guest > >> userspace, the program running in userspace may write the same message to > >> the channel. > > > > Access control is via permissions. You can have udev scripts assign > > whatever uid and gid to the port of your interest. By default, all > > ports are only accessible to the root user. > > We should also prevent root user writing message to this channel if it is > used for panicked notification. >
Why? root can easily cause a panic. -- error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
