[geeks] Windows XP 64bit Licensing?

[nate at portents.com]

> This is not a Linux limit, it's a choice.

I don't think you're right:

http://www.polywell.com/us/support/faq/4GB_Rev1.pdf

"In platforms populated with physical memory sizes approaching 4 GB and
greater, onboard system resource requirements will likely not allow the
operating system to take advantage of all physical memory populated due to
PCI specification requirements and other memory mapped IO resources.
Portions of physical memory may overlap with the memory space dedicated to
other subsystems and become unavailable to the operating system. While
some memory ranges required for addressing IO devices (PCI add in cards,
system BIOS flash, IOxAPIC ranges, ACPI ranges) are unused, other ranges
(integrated graphics shared memory and system management memory ranges)
which the operating system does not report as available, are utilized by
the platform. Future generations of Intel chipset products and
commercially available OS will allow more flexibility for system designers
to use memory resources more efficiently."

I don't think there's anything Linux can do about that.

- Nate