freebsd kernel with SKQ
Go to file
kib ddd1c515e6 amd64: flush L1 data cache on syscall return with an error.
The knob allows to select the flushing mode or turn it off/on.  The
idea, as well as the list of the ignored syscall errors, were taken
from https://www.openwall.com/lists/kernel-hardening/2018/10/11/10 .

I was not able to measure statistically significant difference between
flush enabled vs disabled using syscall_timing getuid.

Reviewed by:	bwidawsk
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D17536
2018-10-20 23:17:24 +00:00
bin stty.1: Document kern.tty_info_kstacks behavior (r339471) 2018-10-20 18:53:32 +00:00
cddl Add support for send, receive and state-change DTrace providers for 2018-08-22 21:23:32 +00:00
contrib Import tzdata 2018f 2018-10-20 22:32:10 +00:00
crypto Try harder to sanitize the environment before running configure. 2018-10-10 22:29:06 +00:00
etc Move hosts.allow to lib/libwrap/ 2018-09-22 13:17:30 +00:00
gnu Bring back the WARNS level to what it used to be to please gcc arches at least 2018-10-20 21:33:34 +00:00
include Reduce NL_ARGMAX to 4096 to match Linux. 2018-10-04 21:55:58 +00:00
kerberos5 Update the existing heimdal implementation for OpenSSL 1.1. 2018-10-05 16:35:24 +00:00
lib mcount: tidy up ANSIfication 2018-10-20 22:39:35 +00:00
libexec rc.initdiskless: fix commentary grammar after r339465 2018-10-20 18:46:36 +00:00
release - Update head to 13.0-CURRENT. 2018-10-19 00:37:47 +00:00
rescue Avoid referencing private lib names directly. 2017-11-10 07:53:02 +00:00
sbin mdmfs(8): Check for other types of helper-program failure 2018-10-20 21:33:00 +00:00
secure openssh: cherry-pick OpenSSL 1.1.1 compatibility 2018-10-06 14:38:34 +00:00
share Add -b/-l options to localedef(1) to specify output endianness and use 2018-10-20 20:51:05 +00:00
stand libi386: remove CLANG_NO_IAS workaround 2018-10-20 22:35:06 +00:00
sys amd64: flush L1 data cache on syscall return with an error. 2018-10-20 23:17:24 +00:00
targets Add -b/-l options to localedef(1) to specify output endianness and use 2018-10-20 20:51:05 +00:00
tests Reparent a child of pdfork(2) to its reaper when the procdesc is closed. 2018-10-16 20:06:56 +00:00
tools Add -b/-l options to localedef(1) to specify output endianness and use 2018-10-20 20:51:05 +00:00
usr.bin Add -b/-l options to localedef(1) to specify output endianness and use 2018-10-20 20:51:05 +00:00
usr.sbin Fix a dead store. 2018-10-20 18:00:13 +00:00
.arcconfig callsign isn't required anymore 2016-09-29 06:19:45 +00:00
.arclint arc lint: ignore /tests/ in chmod 2017-12-19 03:38:06 +00:00
.gitattributes Remove spuriously added svn properties 2018-08-02 18:37:02 +00:00
.gitignore Ignore _.universe-toolchain file. 2018-07-01 13:50:37 +00:00
COPYRIGHT Remove 'All Rights Reserved' from the collection copyright and templates. 2018-05-09 02:02:49 +00:00
LOCKS LOCKS: update current locks 2018-06-09 03:08:04 +00:00
MAINTAINERS Add pointer to freebsd-numerics for libm. 2018-07-16 15:29:32 +00:00
Makefile Don't include the broken riscv64sf TARGET_ARCH in universe. 2018-10-09 22:22:15 +00:00
Makefile.inc1 - Update head to 13.0-CURRENT. 2018-10-19 00:37:47 +00:00
Makefile.libcompat Fix non-FreeBSD host lib32 build for TARGET=amd64 2018-08-23 18:19:10 +00:00
Makefile.sys.inc AUTO_OBJ: For all top-level targets enforce using an OBJDIR. 2017-12-05 21:29:47 +00:00
ObsoleteFiles.inc Correct the comment for the 20181015 entry in ObsoleteFiles.inc. 2018-10-18 19:07:15 +00:00
README README: add generic notes about GENERIC and NOTES 2018-06-17 19:44:24 +00:00
README.md README: add generic notes about GENERIC and NOTES 2018-06-17 19:44:24 +00:00
UPDATING Add updating entry for DRM 2018-10-20 19:14:46 +00:00

FreeBSD Source:

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

FreeBSD is an operating system used to power modern servers, desktops, and embedded platforms. A large community has continually developed it for more than thirty years. Its advanced networking, security, and storage features have made FreeBSD the platform of choice for many of the busiest web sites and most pervasive embedded networking and storage devices.

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. See build(7), config(8), https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html, and https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html for more information, including setting make(1) variables.

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.

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.

stand		Boot loader sources.

sys		Kernel sources.

sys/<arch>/conf Kernel configuration files. GENERIC is the configuration
		used in release builds. NOTES contains documentation of
		all possible entries.

tests		Regression tests which can be run by Kyua.  See tests/README
		for additional information.

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:

https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/current-stable.html