freebsd-dev/sys/sparc64
Alan Cox 1f78f902a8 Background: pmap_object_init_pt() premaps the pages of a object in
order to avoid the overhead of later page faults.  In general, it
implements two cases: one for vnode-backed objects and one for
device-backed objects.  Only the device-backed case is really
machine-dependent, belonging in the pmap.

This commit moves the vnode-backed case into the (relatively) new
function vm_map_pmap_enter().  On amd64 and i386, this commit only
amounts to code rearrangement.  On alpha and ia64, the new machine
independent (MI) implementation of the vnode case is smaller and more
efficient than their pmap-based implementations.  (The MI
implementation takes advantage of the fact that objects in -CURRENT
are ordered collections of pages.)  On sparc64, pmap_object_init_pt()
hadn't (yet) been implemented.
2003-07-03 20:18:02 +00:00
..
central Use M_WAITOK. 2003-02-19 17:25:58 +00:00
compile Obrien created this directory, but I didn't cvs add cvsignore 2001-07-01 23:37:03 +00:00
conf Add a commented-out entry for OFW_NEWPCI to GENERIC and NOTES, along 2003-07-01 15:13:07 +00:00
ebus Add the new sparc64 OFW PCI framework, conditional on options OFW_NEWPCI 2003-07-01 14:52:47 +00:00
fhc Fix definite panic when releasing interrupt resources. 2003-02-19 19:40:40 +00:00
include Mega busdma API commit. 2003-07-01 15:52:06 +00:00
isa Add the new sparc64 OFW PCI framework, conditional on options OFW_NEWPCI 2003-07-01 14:52:47 +00:00
pci Mega busdma API commit. 2003-07-01 15:52:06 +00:00
sbus Mega busdma API commit. 2003-07-01 15:52:06 +00:00
sparc64 Background: pmap_object_init_pt() premaps the pages of a object in 2003-07-03 20:18:02 +00:00