Messages in this thread | | | Date | Wed, 14 Mar 2012 12:52:58 +0200 | From | Avi Kivity <> | Subject | Re: [PATCH 0/2 v3] kvm: notify host when guest panicked |
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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
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