The scheduler uses this topology to try and preserve locality when
migrating threads between CPUs and when performing work stealing.
Ensure that on NUMA systems it will at least take the NUMA topology into
account.
Reviewed by: mmel
Submitted by: Klara, Inc.
Sponsored by: Ampere Computing
Differential Revision: https://reviews.freebsd.org/D28579
(cherry picked from commit 17d0f830dd)
Otherwise, on a powerpc64 NUMA system with hashed page tables, the
first-level superpage reservation size is large enough that the value of
the kernel KVA arena import quantum, KVA_NUMA_IMPORT_QUANTUM, is
negative and gets sign-extended when passed to vmem_set_import(). This
results in a boot-time hang on such platforms.
Reported by: bdragon
(cherry picked from commit 23e875fd97)
This extends upon the RFC 6598 support to libalias/ipfw in r357092.
Reviewed By: manpages (bcr), donner, adrian, kp
Differential Revision: https://reviews.freebsd.org/D23461
(cherry picked from commit 5fe433a6e4)
This node is part of an A10-NSP (L2-BSA) development.
Carrier networks tend to stack three or more tags for internal
purposes and therefore hiding the service tags deep inside of the
stack. When decomposing such an access network frame, the processing
order is typically reversed: First distinguish by service, than by
other means.
This new netgragh node allows to bring the relevant VLAN in front (to
the out-most position). This way other netgraph nodes (like ng_vlan)
can operate on this specific type.
Reviewed by: manpages (gbe), brueffer (manpages), kp
Relnotes: yes
Sponsored by: IKS Service GmbH
Differential Revision: https://reviews.freebsd.org/D22076
(cherry picked from commit cfd6422a52)
Add a BUGS section about using pwrite(2) when O_APPEND is set on the fd.
Submitted by: Ka Ho Ng <khng300@gmail.com>
Reviewed by: gbe, yuripv
Differential Revision: https://reviews.freebsd.org/D28372
(cherry picked from commit 504e64af32)
The previous implementation was reported to try to coalesce packets
in situations when it should not, that resulted in assertion later.
This implementation better checks the first packet of the chain for
the coallescing elligibility.
(cherry picked from commit d510bf133d)
After 0ee0dbfb0d where I imported a more
recent libcxxrt snapshot, the variables 'rtn' and 'has_ret' could in
some cases be used while still uninitialized. Most obviously this would
lead to a jemalloc complaint about a bad free(), aborting the program.
Fix this by initializing a bunch variables in their declarations. This
change has also been sent upstream, with some additional changes to be
used in their testing framework.
PR: 253226
(cherry picked from commit d149877758)
nvme_ctrlr_hw_reset is no longer used outside of nvme_ctrlr.c, so
make it static. If we need to change this in the future we can.
(cherry picked from commit dd2516fc07)
Make it clearer that the value 0xfffffff is being used to detect the device is
gone. We use it other places in the driver for other meanings.
(cherry picked from commit 9600aa31aa)
Move the check for efi variables being supported to after parsing the args. This
allows '-h' to produce both as a normal user as well as on all systems.
(cherry picked from commit 7fe2f504f8)
Our uefi support has included environment variable support for several years
now. Remove the bogus blanket statement saying we don't support them.
MFC After: 3 days
(cherry picked from commit ab77cc9e7b)
This updates r311987/fb1d9b7f4113d which allowed any number of vectors to be
used. Since we're just attaching one instance, the meaning of more than one
vector is not clear and seems to cause problems. Fall back to old methods for
these cards.
PR: 235016
Submitted by: David Cross
(cherry picked from commit 955b6109bb)
conical hat reduction: Make sure we also remove gotboot.efifat. It was created,
briefly, and shouldn't have existed in the first place. Kill it at the same
place we kill boot1.efifat.
Pointy Hat to: imp@
(cherry picked from commit 8cd1b2b1a7)
In commit 38bfc6dee3 we added an IFDI_DETACH() call to
iflib_pseudo_deregister() since it looked like it was missing. One is
present in the error-handling path of iflib_pseudo_register(). However,
the detach actually comes from the DEVICE_DETACH() method for the
above-mentioned device_t, so now we're calling IFDI_DETACH() twice when
destroying a pseudo interface.
Fix the problem by not calling IFDI_DETACH() from the device detach
routine. This way we can ensure that iflib de-initialization always
happens in a consistent order. It also ensures that you can't do silly
things like "devctl detach <pseudo ifnet>", which would previously
detach the driver without tearing down the corresponding ifnet.
PR: 253541
Reviewed by: erj
Fixes: 38bfc6dee3
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D28774
(cherry picked from commit 0f9544d03e)
The motivation is to provide access to these registers from userspace
via ptrace(2) requests PT_GETDBREGS and PT_SETDBREGS.
This change breaks the ABI of these particular requests, but is
justified by the fact that the intended consumers (debuggers) have not
been taught to use them yet. Making this change now enables active
upstream work on lldb to begin using this interface, and take advantage
of the hardware debugging registers available on the platform.
PR: 252860
Reported by: Michał Górny (mgorny@gentoo.org)
Reviewed by: andrew, markj (earlier version)
Tested by: Michał Górny (mgorny@gentoo.org)
Sponsored by: The FreeBSD Foundation
(cherry picked from commit f2583be110)
This is a prerequisite to allowing the use of hardware watchpoints for
userspace debuggers.
This is also a slight departure from the x86 behaviour, since `si_addr`
returns the data address that triggered the watchpoint, not the
address of the instruction that was executed. Otherwise, there is no
straightforward way for the application to determine which watchpoint
was triggered. Make a note of this in the siginfo(3) man page.
Reviewed by: jhb, markj (earlier version)
Tested by: Michał Górny (mgorny@gentoo.org)
Sponsored by: The FreeBSD Foundation
(cherry picked from commit bd012c7159)
In particular, we want to disallow setting breakpoints on kernel
addresses from userspace. The control register fields are validated or
ignored as appropriate.
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
(cherry picked from commit de2b942280)
If we install the scapy package (which we do list as a dependency) we
don't automatically install python (but we do have python3).
MFC after: 1 week
Sponsored by: Rubicon Communications, LLC (“Netgate”’)
(cherry picked from commit 4a7d84058d)
These should only fail if we use them incorrectly, so assert that they
succeed.
MFC after: 1 week
Sponsored by: Rubicon Communications, LLC (“Netgate”’)
(cherry picked from commit c4e0f7aa1a)
These functions always return 0, which is good, because the code calling
them doesn't handle this error gracefully.
As the functions always succeed remove their return value, and the code
handling their errors (because it was never executed anyway).
MFC after: 1 week
Sponsored by: Rubicon Communications, LLC (“Netgate”’)
(cherry picked from commit 8a439f324e)
