System Administration Guide: Virtualization Using the Solaris Operating System

The Solaris System and x86 Platforms

With the introduction of the Sun xVM hypervisor, there are now two platform implementations on the x86 architecture. The implementation names are returned by the uname command with the -i option and refer to the same machine, i86pc.

Applications should use the uname command with the -p option. On x86 platforms, regardless of whether the Solaris system is running under xVM, this option always returns i386. The -p option is equivalent to using the -m option in some other operating systems.