reference while relocation is disabled since the stack will be inaccessible.
Add support for using AltiVec in pmap_zero_page and pmap_copy_page on
AltiVec capable processors.
all, if necessary) depending on the user-specified termios flags.
This allows the device to talk to DCEs which don't assert RTS
(i.e. dumb, 3-wire serial ports).
value of the TCP_NODELAY socket option from the listener to the
newly connected connection. Agrees with how Linux & FreeBSD behave,
and goes more with the spirit of accept(2) creating a socket with
the same properties as the listener.
Analysis by Kevin Lahey. Closes PR 17616 by myself.
machines always use the Viking CPU, and cache info is not available
from the PROM, so we have to hard-code it in that case.
Rearrange some stuff to make it easier to share.
how many CPU types are configured into the kernel. Then, use this
information to define the CPU predicate macros according to the
following rules:
1. If support for a CPU type is not configured into the kernel,
then the test is always false.
2. Otherwise, if only one CPU type is configured into the kernel,
then the test is always true.
3. Otherwise, we have to reference the cputyp variable.
Use a similar strategy for short-cutting the page size related
definitions.
as (CPU_ISSUN4 || CPU_ISSUN4C) and (CPU_ISSUN4C || CPU_ISSUN4M),
respectively. The compiler can still optimize as desired by expressing
them this way, and it simplifies adding new tests.
While here, just remove CPU_ISSUN4MOR4U; it's not used by anything.
pmap_syncicache. This file uses a ppc feature in a sick and twisted way
to avoid mapping the physical pages used by those routines. It performs
the operations with the MMU disabled but PPC exception save and retstore
the machine state and are invoked with the MMU disabled, this doesn't have
an adverse effect on the system.
Currently only enable for MPC6xx and !OLDPMAP.
One basic struct, a function to setup a queue with a specific strategy and
three macros to put buf's into the queue, get and remove the next buf or
get the next buf without removal.
The BUFQ_XXX interface will be removed in the future.
The B_ORDERED flag is not longer supported.
Approved by: Jason R. Thorpe <thorpej@wasabisystems.com>
isn't perfect (the NetBSD device units must match ARCS device numbers), but
it's better than randomly matching one of the devices. Fixes PR 16584 from
Scott G. Taylor.
the page is still loaned to an anon, we should put the page back on a
paging queue. this is because while pages loaned to the kernel really
do need to stay resident (since the kernel is accessing the physical
memory directly), pages loaned to anons can be paged out just fine.
(the page will be paged out twice, first to the object and then again
to the anon, but after that the page can be reused.)
matt