Don't export USER_SR if _MODULE is defined.
Add a common <powerpc/vmparam.h> like we have for <powerpc/pmap.h>

Commit a fix for the _SR regions that are needed by ofppc. Because this
platform tends to just declare anything from 0x8 to 0xf as mem or io
regions willy-nilly, we need to avoid batmapping a few of

Commit a fix for the _SR regions that are needed by ofppc. Because this
platform tends to just declare anything from 0x8 to 0xf as mem or io
regions willy-nilly, we need to avoid batmapping a few of those in order
to save space for USER_SR, KERNEL_SR and KERNEL2_SR. I picked values for
these three that are least-commonly used or used for non-vital things.

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Rename PPC_MPC6XX to PPC_OEA (and any mpc6xx reference to oea).

Remove OLDPMAP support.

Use __LDPGSZ (which must be == USRTEXT) as the text address for a.out
executables, and eliminate the USRTEXT constant, which was only used
by the a.out exec code.

Use SR 11 as USER_SR. (12 is used as an I/O BAT).

switch all mpc6xx powerpc ports to NEWPMAP by default.
the old pmap is still available with the OLDPMAP option.

MAXSLP is defined to be a machine-independent scheduling parameter,
so move it into sys/param.h.

NEWPMAP fixes that I missed committing.

Define VM_MAX_KERNEL_BUF and PAGER_MAP_SIZE to save KVA space.

Per discussion w/ chuck and chuck, restructure the md page stuff
to use a structure called "vm_page_md", and use __HAVE_VM_PAGE_MD
and __HAVE_PMAP_PHYSSEG.

Add a VM_MDPAGE_MEMBERS macro that defines pmap-specific data for
each vm_page structure. Add a VM_MDPAGE_INIT() macro to init this
data when pages are initialized by UVM. These macros are mandator

Add a VM_MDPAGE_MEMBERS macro that defines pmap-specific data for
each vm_page structure. Add a VM_MDPAGE_INIT() macro to init this
data when pages are initialized by UVM. These macros are mandatory,
but ports may #define them to nothing if they are not needed/used.

This deprecates struct pmap_physseg. As a transitional measure,
allow a port to #define PMAP_PHYSSEG so that it can continue to
use it until its pmap is converted to use VM_MDPAGE_MEMBERS.

Use all this stuff to eliminate a lot of extra work in the Alpha
pmap module (it's smaller and faster now). Changes to other pmap
modules will follow.

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Update for the NKMEMPAGES changes.

CL* discarding.

Now that we have direct-mapped pool pages, we can garbage-collect VM_MBUF_SIZE
and don't need to allocate mb_map.

VM_MBUF_SIZE is in terms of MCLBYTES, not CLBYTES.

MNN is no longer optional

vm_offset_t -> {paddr_t,vaddr_t}, vm_size_t -> vsize_t

Merge in MACHINE_NEW_NONCONTIG support and some fix from Tsubai-San.
UVM support.

Fix typo.

bring mrg-vm-swap2 onto mainilne.

Always define MACHINE_NONCONTIG.

PowerPC port