freebsd-dev/sys/sun4v
Alan Cox 04a18977c8 Define every architecture as either VM_PHYSSEG_DENSE or
VM_PHYSSEG_SPARSE depending on whether the physical address space is
densely or sparsely populated with memory.  The effect of this
definition is to determine which of two implementations of
vm_page_array and PHYS_TO_VM_PAGE() is used.  The legacy
implementation is obtained by defining VM_PHYSSEG_DENSE, and a new
implementation that trades off time for space is obtained by defining
VM_PHYSSEG_SPARSE.  For now, all architectures except for ia64 and
sparc64 define VM_PHYSSEG_DENSE.  Defining VM_PHYSSEG_SPARSE on ia64
allows the entirety of my Itanium 2's memory to be used.  Previously,
only the first 1 GB could be used.  Defining VM_PHYSSEG_SPARSE on
sparc64 allows USIIIi-based systems to boot without crashing.

This change is a combination of Nathan Whitehorn's patch and my own
work in perforce.

Discussed with: kmacy, marius, Nathan Whitehorn
PR:		112194
2007-05-05 19:50:28 +00:00
..
cddl move CDDL licensed machine description support routine files to cddl directory 2006-11-24 01:56:46 +00:00
compile
conf Remove trailing '.' for consistency! 2007-04-10 21:40:13 +00:00
include Define every architecture as either VM_PHYSSEG_DENSE or 2007-05-05 19:50:28 +00:00
mdesc Don't count on the first phys_avail range being greater than zero 2006-12-24 07:47:10 +00:00
sun4v o break newbus api: add a new argument of type driver_filter_t to 2007-02-23 12:19:07 +00:00