Hot plugging memory

Hot plugging memory is possible, but you can only increase the amount.
By adding
maxmem = ’4096′
in your domU config, you can dynamically increase the amount of memory up to this limit with xm mem-set

Xen as a time machine

After installation, the kernel keeps telling me that the “Time went backwards”.
This is a nice new feature, but if you don’t want, you can add
extra=”clocksource=jiffies”
to your domU config file.