I encountered an error while installing Solaris 10 under my KVM running on Fedora 12. I get following error after booting Solaris 10 and select Solaris for booting to start installation
panic[cpu0]/thread=xxxxxxxx: page_unlock: page xxxxxxx is not locked
After searching i found that minimal required RAM for installation of Solaris 10 is 768MB and i was using 512MB. So i increase the RAM under my KVM configuration and bingo the installation starts smoothly.