On Tue, 2006-07-18 at 00:00 -0700, Chris Wright wrote: > plain text document attachment (xen-console) > This provides a bootstrap and ongoing emergency console which is > intended to be available from very early during boot and at all times > thereafter, in contrast with alternatives such as UDP-based syslogd, > or logging in via ssh. The protocol is based on a simple shared-memory > ring buffer. > +/* > + * Modes: > + * 'xencons=off' [XC_OFF]: Console is disabled. > + * 'xencons=tty' [XC_TTY]: Console attached to '/dev/tty[0-9]+'. > + * 'xencons=ttyS' [XC_SERIAL]: Console attached to '/dev/ttyS[0-9]+'. > + * [XC_DEFAULT]: DOM0 -> XC_SERIAL ; all others -> XC_TTY. > + * > + * NB. In mode XC_TTY, we create dummy consoles for tty2-63. This suppresses > + * warnings from standard distro startup scripts. > + */ The console driver should not be hijacking /dev/tty or /dev/ttyS devices. Instead, it should use its own char device, like the pSeries hypervisor console does (/dev/hvc). Yes, I understand that installers, inittab, and securetty files will need to be updated. Luckily, there are a couple of distros interested in supporting Xen who I suspect will be able to help. -- Hollis Blanchard IBM Linux Technology Center
