freebsd with flexible iflib nic queues
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Grzegorz Bernacki b8b08befd0 Switch to AP[2:1] access permissions model. Store "referenced"
bit in PTE.

Enable Access Flag in CPU control. With AF enabled each valid mapping
needs to have referenced bit in PTE set in order to be able to cache
it in the TLB.

AP[0] bit is to be used as reference flag.
All access permissions are encoded by AP[2:1] wherein AP[1] is in fact
"user enable" and AP[2](APX) is "write disable".

All mappings are always set to be valid. Reference emulation is performed
by setting/clearing reference flag in PTE.

md.pvh_attrs are no longer necessary however pv_flags are still being used
for now.

Marking vm_page as "dirty" or "referenced" is being performed on:
- page or flag fault servicing in pmap_fault_fixup(), basing on the fault
  type
- vm_fault servicing in pmap_enter() according to the desired protections
  and faulty access type
Redundant page marking has been removed as on ARM we know exactly when the
particular page is referenced or is going to be written.

Submitted by:	Zbigniew Bodek <zbb@semihalf.com>
Sponsored by:	The FreeBSD Foundation, Semihalf
2013-05-23 12:07:41 +00:00
bin Complete revision 243104. 2013-05-17 03:52:20 +00:00
cddl Remove a block of code that was not intended to be part of the previous 2013-05-20 02:10:18 +00:00
contrib Work around build breakages with GCC 4.2. 2013-05-23 05:42:35 +00:00
crypto Have the ipropd-master listen on an IPv6 socket in addition to an IPv4 2013-05-18 18:01:21 +00:00
etc Refine the "nojail" rc keyword, adding "nojailvnet" for files that don't 2013-05-19 04:10:34 +00:00
games Remove a reference to instant-server which has been removed from the 2013-03-21 12:42:25 +00:00
gnu Don't look for headers outside of the source or object directories. In 2013-05-21 17:30:27 +00:00
include Add proper prerequisites for even two more headers. 2013-05-21 21:50:11 +00:00
kerberos5 Fix the getpwnam_r() call in the pname_to_uid() kerberos library function so 2013-05-02 12:52:49 +00:00
lib Update manpages for r250887. 2013-05-21 21:39:18 +00:00
libexec mdoc sweep. 2013-05-12 22:22:12 +00:00
release Fix build after doc/projects/xml-tools integration. 2013-05-19 05:49:21 +00:00
rescue Add less to rescue build. On amd64, this increases rescue size by about 2013-05-13 22:16:33 +00:00
sbin Improve compatibility with old flex and fix build with GCC. 2013-05-22 17:47:45 +00:00
secure Remove references to MK_IDEA. 2013-04-27 05:44:39 +00:00
share Don't depend on the touch binary being present. 2013-05-22 22:34:48 +00:00
sys Switch to AP[2:1] access permissions model. Store "referenced" 2013-05-23 12:07:41 +00:00
tools Implement beacon event debugging in athalq. 2013-05-22 01:03:41 +00:00
usr.bin Work around build breakages with GCC 4.2. 2013-05-23 05:42:35 +00:00
usr.sbin Work around build breakages with GCC 4.2. 2013-05-23 05:42:35 +00:00
COPYRIGHT Happy New Year 2013! 2012-12-31 11:22:55 +00:00
LOCKS Test commit to make sure commit mail works after moving the server. 2012-12-29 16:03:23 +00:00
MAINTAINERS Use my @freebsd.org username, rather than ${WORK} username. 2013-05-18 14:05:32 +00:00
Makefile Reverse the sense of the test wrt bmake, and guard against 2013-05-16 21:26:46 +00:00
Makefile.inc1 Connect flex 2.5.37 to the build and bump __FreeBSD_version. 2013-05-21 19:32:35 +00:00
ObsoleteFiles.inc Add another obsolete file: nfs fha moved 2013-05-18 18:28:19 +00:00
README
UPDATING Mention the switch to bmake by default. 2013-05-21 18:38:09 +00:00

This is the top level of the FreeBSD source directory.  This file
was last revised on:
$FreeBSD$

For copyright information, please see the file COPYRIGHT in this
directory (additional copyright information also exists for some
sources in this tree - please see the specific source directories for
more information).

The Makefile in this directory supports a number of targets for
building components (or all) of the FreeBSD source tree, the most
commonly used one being ``world'', which rebuilds and installs
everything in the FreeBSD system from the source tree except the
kernel, the kernel-modules and the contents of /etc.  The ``world''
target should only be used in cases where the source tree has not
changed from the currently running version.  See:
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html
for more information, including setting make(1) variables.

The ``buildkernel'' and ``installkernel'' targets build and install
the kernel and the modules (see below).  Please see the top of
the Makefile in this directory for more information on the
standard build targets and compile-time flags.

Building a kernel is a somewhat more involved process, documentation
for which can be found at:
   http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html
And in the config(8) man page.
Note: If you want to build and install the kernel with the
``buildkernel'' and ``installkernel'' targets, you might need to build
world before.  More information is available in the handbook.

The sample kernel configuration files reside in the sys/<arch>/conf
sub-directory (assuming that you've installed the kernel sources), the
file named GENERIC being the one used to build your initial installation
kernel.  The file NOTES contains entries and documentation for all possible
devices, not just those commonly used.  It is the successor of the ancient
LINT file, but in contrast to LINT, it is not buildable as a kernel but a
pure reference and documentation file.


Source Roadmap:
---------------
bin		System/user commands.

cddl		Various commands and libraries under the Common Development
		and Distribution License.

contrib		Packages contributed by 3rd parties.

crypto		Cryptography stuff (see crypto/README).

etc		Template files for /etc.

games		Amusements.

gnu		Various commands and libraries under the GNU Public License.
		Please see gnu/COPYING* for more information.

include		System include files.

kerberos5	Kerberos5 (Heimdal) package.

lib		System libraries.

libexec		System daemons.

release		Release building Makefile & associated tools.

rescue		Build system for statically linked /rescue utilities.

sbin		System commands.

secure		Cryptographic libraries and commands.

share		Shared resources.

sys		Kernel sources.

tools		Utilities for regression testing and miscellaneous tasks.

usr.bin		User commands.

usr.sbin	System administration commands.


For information on synchronizing your source tree with one or more of
the FreeBSD Project's development branches, please see:

  http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/synching.html