On Mon, Jan 24, 2011 at 09:25:45AM -0800, John Reiser wrote:
Actually many of them should be using the new x86_32 software
architecture,
which is the 64-bit instruction set (thus 16 "general" registers, SSE, ...)
but with integers, longs, and pointers all 32 bits. The upper 32 bits
of any user address are 0, and not stored in RAM (except the return address
of CALL.) This gives a measurable benefit on boxes with low RAM.
This seems like it might be useful in many virtual machine setups. Can you
quantify "measurable"?
--
Matthew Miller <mattdm(a)mattdm.org>
Senior Systems Architect -- Instructional & Research Computing Services
Harvard School of Engineering & Applied Sciences