Some imx6 drivers are being converted to use features that weren't available
when they were first written (such as accessing shared device registers via
the syscon pseudo-device), so imx6 custom kernels that reference those
devices will now need this infrastructure in place.
Now that config(8) has supported include for 19 years, transition to
including the NOTES files. include support didn't exist at the time,
nor did the envvar stuff recently added. Now that it does, eliminate
the building of LINT files by just including everything you need.
Note: This may cause conflicts with updating in some cases.
find sys -name LINT\* -rm
is suggested across this commit to remove the generated LINT
files.
Reviewed by: kevans
Differential Revision: https://reviews.freebsd.org/D26540
This removes SCTP from in-tree kernel configuration files. Now, SCTP
can be enabled by simply loading the module, as discussed on
freebsd-net@.
Reviewed by: tuexen
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D25611
Now that armv5 is gone, we no longer need multiple LINT files. Kill
the odd-ball support here. From now on, we just have LINT built from
notes like all the other platforms. Keep the removal of LINT-V5/7
to remove stale files for a while still..
This is a qspi driver for the Xilinx Zynq-7000 chip.
It could be useful for anyone wanting to boot a system from flash memory
instead of SD cards.
Submitted by: Thomas Skibo (thomasskibo@yahoo.com)
Differential Revision: https://reviews.freebsd.org/D14698
We use armv7/GENERIC for the RPI2 images. The original RPI2 is actually a
32-bit BCM2836, but v1.2 was upgraded to the 64-bit BCM2837. The project
continues to provide the RPI2 image as armv7, as it's the lowest common
denominator of the two. Historically, we've just kind of implicitly
acknowledged this by including some bcm2837 bits on a SOC_BCM2836 kernel
config -- this worked until r354875 added code that actually cared.
Acknowledge formally that BCM2837 is valid in arm32.
This name is inconsistent with the other BCM* SOC on !arm64 for two reasons:
1. It's a pre-existing option on arm64, and
2. the naming convention on arm/ should've arguably changed to include BRCM
#1 seems to be a convincing enough argument to maintain the existing name
for it.
o Remove All Rights Reserved from my notices
o imp@FreeBSD.org everywhere
o regularize punctiation, eliminate date ranges
o Make sure that it's clear that I don't claim All Rights reserved by listing
All Rights Reserved on same line as other copyright holders (but not
me). Other such holders are also listed last where it's clear.
r354290 removed arm.arm from universe, but arm.arm kernels were still
found and built during the kernel stage. I'm not aware of a better way
to address this at the moment, but since there aren't many arm.arm
kernels anyhow just add an explicit NO_UNIVERSE to them.
Reported by: rpokala
The purpose of this option is to make it easier to track down memory
corruption bugs by reducing the number of malloc(9) types that might
have recently been associated with a given chunk of memory. However, it
increases fragmentation and is disabled in release kernels.
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
The old stack_machdep.c code was written for the APCS ABI (aka "oldabi").
When we switched to ARM EABI (back in freebsd 10) this file never got
updated, and apparently nobody noticed that until now.
The new implementation uses the same stack unwinder code used by the
arm implemenation of the db_trace stuff.
Many arm kernel configs bogusly specified WERROR=-Werror. There's no
reason for this because the default is that and there's no reason to
override. These date from a time when we needed to add additional
warning->error suppression. They are obsolete and were cut and paste
propagated from file to file.
Comment out all the WERROR=.... lines in powerpc. They aren't bogus,
but were appropriate for the old defaults for gcc4.2.1. Now that we've
made the policy decision to suppress -Werror by default on these
platforms, it is appropriate to comment these out. People wishing to
fix these errors can still un-comment them out, or say WERROR=-Werror
on the command line.
Fix two instances (cut and paste propagation) of hard-coded -Werror
in x86 code. Replace with ${WERROR} instead. This is a no-op change
except for people who build WERROR=-Wno-error :).
This should fix tinderbox / CI breakage.
Move the floppy driver to the x86 specific notes file.
Reviewed by: jhb, manu, jhibbits, emaste
Differential Revision: https://reviews.freebsd.org/D21208
x86 needs sc, as does sparc64. powerpc doesn't use it by default, but some old
powermac notebooks do not work with vt yet for reasons unknonw. Even so, I've
removed it from powerpc LINT. It's not in daily use there, and the intent is to
100% switch to vt now that it works for that platform to limit support burden.
All the other architectures omit some or all of the screen savers from their
lint config. Move them to the x86 NOTES files and remove the exclusions. This
reduces slightly the number of savers sparc64 compiles, but since they are in
GENERIC, the overage is adequate and if someone reaelly wants to sort them out
in sparc64 they can sweat the details and the testing.
Reviewed by: jhb (earlier version), manu (earlier version), jhibbits
Differential Revision: https://reviews.freebsd.org/D21233
Nothing uses these anymore. They were for super small armv4 boards without
uboot. We removed armv4 support before 13.0, but neglected to garbage collect
this at the same time. Today, both flavors of armv5 kernels (mv and ralink) boot
via uboot which has its own compression scheme for boards that need it.
Note: OLDFILES has not been updated beacuse installkernel will move the whole
directory out of the way before installing the new kernel.
Differential Revision: https://reviews.freebsd.org/D21072
NANDFS has been broken for years. Remove it. The NAND drivers that
remain are for ancient parts that are no longer relevant. They are
polled, have terrible performance and just for ancient arm
hardware. NAND parts have evolved significantly from this early work
and little to none of it would be relevant should someone need to
update to support raw nand. This code has been off by default for
years and has violated the vnode protocol leading to panics since it
was committed.
Numerous posts to arch@ and other locations have found no actual users
for this software.
Relnotes: Yes
No Objection From: arch@
Differential Revision: https://reviews.freebsd.org/D20745
had been done years ago. I did. All this time we've only compiled a LINT
kernel for TARGET_ARCH=arm. Now separate LINT-V5 and LINT-V7 configs are
generated and built.
There are two new files in arm/conf, NOTES.armv5 and NOTES.armv7, containing
some of what used to be in the arm NOTES file. That file now contains only
the bits that are common to v5 and v7.
The makeLINT.mk file now creates the LINT-V5 and LINT-V7 files by concatening
sys/conf/NOTES, arm/conf/NOTES, and arm/conf/NOTES.armv{5,7} in that order.
Having IPSEC compiled into the kernel imposes a non-trivial
performance penalty on multi-threaded workloads due to IPSEC
refcounting. In my benchmarks of multi-threaded UDP
transmit (connected sockets), I've seen a roughly 20% performance
penalty when the IPSEC option is included in the kernel (16.8Mpps
vs 13.8Mpps with 32 senders on a 14 core / 28 HTT Xeon
2697v3)). This is largely due to key_addref() incrementing and
decrementing an atomic reference count on the default
policy. This cause all CPUs to stall on the same cacheline, as it
bounces between different CPUs.
Given that relatively few users use ipsec, and that it can be
loaded as a module, it seems reasonable to ask those users to
load the ipsec module so as to avoid imposing this penalty on the
GENERIC kernel. Its my hope that this will make FreeBSD look
better in "out of the box" benchmark comparisons with other
operating systems.
Many thanks to ae for fixing auto-loading of ipsec.ko when
ifconfig tries to configure ipsec, and to cy for volunteering
to ensure the the racoon ports will load the ipsec.ko module
Reviewed by: cem, cy, delphij, gnn, jhb, jpaetzel
Differential Revision: https://reviews.freebsd.org/D20163
tun(4) and tap(4) share the same general management interface and have a lot
in common. Bugs exist in tap(4) that have been fixed in tun(4), and
vice-versa. Let's reduce the maintenance requirements by merging them
together and using flags to differentiate between the three interface types
(tun, tap, vmnet).
This fixes a couple of tap(4)/vmnet(4) issues right out of the gate:
- tap devices may no longer be destroyed while they're open [0]
- VIMAGE issues already addressed in tun by kp
[0] emaste had removed an easy-panic-button in r240938 due to devdrn
blocking. A naive glance over this leads me to believe that this isn't quite
complete -- destroy_devl will only block while executing d_* functions, but
doesn't block the device from being destroyed while a process has it open.
The latter is the intent of the condvar in tun, so this is "fixed" (for
certain definitions of the word -- it wasn't really broken in tap, it just
wasn't quite ideal).
ifconfig(8) also grew the ability to map an interface name to a kld, so
that `ifconfig {tun,tap}0` can continue to autoload the correct module, and
`ifconfig vmnet0 create` will now autoload the correct module. This is a
low overhead addition.
(MFC commentary)
This may get MFC'd if many bugs in tun(4)/tap(4) are discovered after this,
and how critical they are. Changes after this are likely easily MFC'd
without taking this merge, but the merge will be easier.
I have no plans to do this MFC as of now.
Reviewed by: bcr (manpages), tuexen (testing, syzkaller/packetdrill)
Input also from: melifaro
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D20044
Use it wherever COMPAT_FREEBSD11 is currently specified, like r309749.
Reviewed by: imp, jhb, markj
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D20120
Correct a typo in the RPI-B ethernet config - the RPi-B includes a
SMC LAN9512 USB bridge and Ethernet 10/100 NIC/phy. The phy part of
this is supported by smscphy.
Tested On: RPi1 Model B
Approved by: grog, jhb (mentors)
MFC after: 3 days
The loader tunable 'debug.verbose_sysinit' may be used to toggle verbosity.
This is added to the debugging section of these kernconfs to be turned off
in stable branches for clarity of intent.
MFC after: never
(e.g. RocketChip, lowRISC and derivatives).
RISC-V page table entries support A (accessed) and D (dirty) bits. The
spec makes hardware support for these bits optional. Implementations that
do not manage these bits in hardware raise page faults for accesses to a
valid page without A set and writes to a writable page without D set.
Check for these types of faults when handling a page fault and fixup the
PTE without calling vm_fault if they occur.
Reviewed by: jhb, markj
Approved by: re (gjb)
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D17424
We ought to be consistent across our Tier-1 and nearly-Tier-1
architectures, so enable Capsicum for 32-bit armv6/armv7 by default.
PR: 204008
Reviewed by: ian, oshogbo
Approved by: re (gjb)
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D17023
Revert r338177, r338176, r338175, r338174, r338172
After long consultations with re@, core members and mmacy, revert
these changes. Followup changes will be made to mark them as
deprecated and prent a message about where to find the up-to-date
driver. Followup commits will be made to make this clear in the
installer. Followup commits to reduce POLA in ways we're still
exploring.
It's anticipated that after the freeze, this will be removed in
13-current (with the residual of the drm2 code copied to
sys/arm/dev/drm2 for the TEGRA port's use w/o the intel or
radeon drivers).
Due to the impending freeze, there was no formal core vote for
this. I've been talking to different core members all day, as well as
Matt Macey and Glen Barber. Nobody is completely happy, all are
grudgingly going along with this. Work is in progress to mitigate
the negative effects as much as possible.
Requested by: re@ (gjb, rgrimes)
