Re: [Qemu-devel] [PATCH 0/2 v3] kvm: notify host when guest panicked

[Avi Kivity]

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