pagetables.
physmap[] can be inconsistent with the physical memory limit due to
buggy bios, or to the hw.physmem tunable. Since bootstrap pagetables
are initialized by accesses through the DMAP, we must ensure that DMAP
really cover the selected pages. This is only relevant when machine
has less than 4G RAM and buggy BIOS, which is the combination on Acer
Chromebook 720.
The call to mp_bootaddress() is moved later to have Maxmem initialized.
An alternative could be to always cover 4G for DMAP, but this change
seems to be simpler.
Reported and tested by: grembo
Reviewed by: royger
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D15675
installworld should not be executing this anyhow but there is some
obscure case doing it still. The head(1) binary is not part of
ITOOLS and there's no need to add it.
MFC after: 1 week
Sponsored by: Dell EMC
Fix the behavior of ofw_fdt_getprop() and ofw_fdt_getprop() functions to match
the documentation as the non-fdt code.
Submitted by: Luis Pires <lffpires@ruabrasil.org>
Reviewed by: manu, jhibbits
Approved by: jhibbits (mentor)
Differential Revision: https://reviews.freebsd.org/D15680
Expected NMI-s are those than are either generated by the software (such
as a CPU sending NMI to other CPU) or generated by the hardware after
the software configured it to do so (such as NMI-s on PMC events).
Some unexpected NMI-s can be caused by hardware failures and it is
possible to inquire the hardware about them (somewhat like MCA but much
more primitive) using an EISA mechanism. In some cases the origin of
the NMI can remain truly unknown.
This commit should not change any functionality. It just reorganizes
the code, so that it is easier to extend with new checks for the origin
of the NMI. Also, it frees the code that has nothing to do with ISA
from DEV_ISA.
MFC after: 3 weeks
On PowerNV systems, the rootfs is passed through kexec, which loads the rootfs
into memory and set two fdt entries to describe where the file is located in
the memory;
I need to pass this memory region to the md device as a mfs_root, but, current
md driver does not support two things:
* Just getting a pointer from an external (bootloader) memory. If I need to
workaround it, I would need to declare a static array and memcopy from this
external memory to this static variable.
* The size of the image. The usage of mfs_root_end, which is not a pointer,
seems to be not possible for this prestaged scenario.
This patch simply adds a new way to load mfs_root from memory.
Differential Revision: https://reviews.freebsd.org/D15625
Approved by: kib, jhibbits (mentor)
If the ipfw module is not loaded the net.inet.ip.fw.enable OID does not exist,
which leads the script to report errors and incorrectly report that ipfw is
enabled.
ixl(4) (when it switches over to using iflib) devices need the TCP header
length in order to do TCP checksum offload.
Reviewed by: gallatin@, shurd@
MFC after: 1 week
Sponsored by: Intel Corporation
Differential Revision: https://reviews.freebsd.org/D15558
PowerPC has PAGE_SIZE as a long, not an int. This causes the compiler to throw
a format mismatch warning on this print. To work around the difference, print
it as a long instead of an int, and force the argument to a long.
Reviewed By: imp
Differential Revision: https://reviews.freebsd.org/D15653
controller that tries to handle early invocations of the controller,
in other words, invocations before the expected end of the interval.
However, there were some calculation errors in this early invocation
case. Notably, if an early invocation occurred while the error was
negative, the derivative term was off by a large amount. One visible
effect of this error was that processes were being killed by the
virtual memory system's OOM killer when in fact there was plentiful
free memory.
Correct a couple minor errors in the sysctl descriptions, and apply
some style fixes.
Reviewed by: jeff, markj
- add '-j' options to filter to enable converting native pmc
log format to json lines format to enable the use of scripts
and external tooling
% pmc filter -j pmc.log pmc.jsonl
- Record the tsc value in sampling interrupts as opposed to
recording nanotime when the sample is copied to a global log
in hardclock - potentially many milliseconds later.
- At initialize record the tsc_freq and the time of day to give
us an offset for translating the tsc values in callchain records
Some mpc85xx devices with u-boot need MBR partitioning with a FAT boot
partition. Since the infrastructure is already in place to have a dedicated
boot partition, this adds the necessary bits to use that infrastructure with
mpc85xx boards.
Reviewed By: nwhitehorn
Differential Revision: https://reviews.freebsd.org/D15664
GNU grep as in actually in base does not have any translations support
compiled in, so no functionnality loss.
We do support 193 locales in base, we will never catch up on that number of
translation with bsd grep.
Removing NLS support make bsd grep consistent with the other binaries in base
which are not translated, and also reduce a little bit the code.
Reviewed by: kevans
Approved by: kevans
Discussed with: kevans @BSDCan
Differential Revision: https://reviews.freebsd.org/D15682
In the DESCRIPTION, put the more commonly used functions first in the
corresponding sentence, to help catch the eye.
Pull out the note about overlapping buffers to its own paragraph, as it
applies to all routines documented by this page.
Emphasize the potentially surprising strncpy(3) behavior of zero-filling the
remainder of a buffer larger than the source string.
Encourage strlcpy use; remove portability note about strlcpy(3). Adapting a
strlcpy-using code base to a platform that does not provide strlcpy in libc
is so trivial as to not be worth mentioning. (Just copy strlcpy.c out of
any BSD libc, or include and link the pre-packaged libbsd library on non-BSD
platforms.)
Likewise, expand the page's warning about ease of potential misuse to cover
all functions documented herein, and explicitly suggest using strlcpy most
of the time. The text was mostly cribbed from a similar suggestion in
gets(3).
Finally, document the remaining valid use of strncpy -- the rare
fixed-length record with no expectation of nul-termination.
Sponsored by: Dell EMC Isilon
In the pf rc.d script the output of `/etc/rc.d/pf status` or `/etc/rc.d/pf
onestatus` always provided an exit status of zero. This made it fiddly to
programmatically determine if pf was running or not.
Return a non-zero status if the pf module is not loaded, extend pfctl to have
an option to return an error status if pf is not enabled.
PR: 228632
Submitted by: James Park-Watt <jimmypw AT gmail.com>
MFC after: 1 week
Silently dicard SCTP chunks which have been requested to be
authenticated but are received unauthenticated no matter if support
for SCTP authentication has been negotiated. This improves compliance
with RFC 4895.
When the application uses the SCTP_AUTH_CHUNK socket option to
request a chunk to be received in an authenticated way, enable
the SCTP authentication extension for the end-point. This improves
compliance with RFC 6458.
Discussed with: Peter Lei
MFC after: 3 days
This will not be executed on reload, though later work could allow for that.
It's intended/expected that later work won't generally need to happen on
every config load, just once (for, e.g., menu initialization) or just when
config is reloaded but not upon the initial load.
While at it rename hlist_add_after() into hlist_add_behind().
Submitted by: Johannes Lundberg <johalun0@gmail.com>
MFC after: 1 week
Sponsored by: Mellanox Technologies
Sponsored by: Limelight Networks
This patch adds a new socket option, SO_REUSEPORT_LB, which allow multiple
programs or threads to bind to the same port and incoming connections will be
load balanced using a hash function.
Most of the code was copied from a similar patch for DragonflyBSD.
However, in DragonflyBSD, load balancing is a global on/off setting and can not
be set per socket. This patch allows for simultaneous use of both the current
SO_REUSEPORT and the new SO_REUSEPORT_LB options on the same system.
Required changes to structures:
Globally change so_options from 16 to 32 bit value to allow for more options.
Add hashtable in pcbinfo to hold all SO_REUSEPORT_LB sockets.
Limitations:
As DragonflyBSD, a load balance group is limited to 256 pcbs (256 programs or
threads sharing the same socket).
This is a substantially different contribution as compared to its original
incarnation at svn r332894 and reverted at svn r332967. Thanks to rwatson@
for the substantive feedback that is included in this commit.
Submitted by: Johannes Lundberg <johalun0@gmail.com>
Obtained from: DragonflyBSD
Relnotes: Yes
Sponsored by: Limelight Networks
Differential Revision: https://reviews.freebsd.org/D11003
the LinuxKPI. Add a comment saying in which Linux version this change was made.
Submitted by: Johannes Lundberg <johalun0@gmail.com>
MFC after: 1 week
Sponsored by: Mellanox Technologies
Sponsored by: Limelight Networks
Use m_copyback() function to write checksum when it isn't located
in the first mbuf of the chain. Handmade analog doesn't handle the
case when parts of checksum are located in different mbufs.
Also in case when mbuf is too short, m_copyback() will allocate new
mbuf in the chain instead of making out of bounds write.
Also wrap long line and remove now useless KASSERTs.
X-MFC after: r334705
