This is to silence down some Chromium assertions.
PR: kern/240991
Analyzed by: Alex S <iwtcex@gmail.com>
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D25256
Create an acpi attachment for the DWC USB OTG device. This is present in
the Raspberry Pi 4 in the USB-C port normally used to power the board. Some
firmware presents the kernel with ACPI tables rather than FDT so we need
an ACPI attachment.
Submitted by: Greg V <greg_unrelenting.technology>
Approved by: hselasky (removal of All rights reserved)
Differential Revision: https://reviews.freebsd.org/D25203
The counters are exported by a sysctl and have the same width on all
platforms anyway.
Reviewed by: cem, delphij, jhb
Sponsored by: Rubicon Communications, LLC (Netgate)
Differential Revision: https://reviews.freebsd.org/D25465
It was added a very long time ago. It is single-threaded, so only
really useful for basic measurements, and in the meantime we've gotten
some more sophisticated profiling tools.
Reviewed by: cem, delphij, jhb
Sponsored by: Rubicon Communications, LLC (Netgate)
Differential Revision: https://reviews.freebsd.org/D25464
LIST_FOREACH_SAFE() is not safe in the presence
of other threads removing list entries when a
mutex is released.
This is not in the critical path, so just restart
the scan each time we drop the lock, rather than
using a marker.
Reviewed by: jhb, markj
Sponsored by: Netflix
rpokala notes that splitting the definitions like this is kind of silly,
since the comment applies to both. Move the comment up (or the definition
down, depending on your perspective on life) accordingly.
Reported by: rpokala
In preparation for using ifuncs in the kernel is is useful to have a common
view of the arm64 ID registers across all CPUs. Add this and extract the
logic for finding the lower value of two fields to a new helper function.
Sponsored by: Innovate UK
Differential Revision: https://reviews.freebsd.org/D25463
This effectively mirrors our libc implementation, but with minor fudging --
name needs to be copied in from userspace, so we just copy it straight into
stack-allocated memfd_name into the correct position rather than allocating
memory that needs to be cleaned up.
The sealing-related fcntl(2) commands, F_GET_SEALS and F_ADD_SEALS, have
also been implemented now that we support them.
Note that this implementation is still not quite at feature parity w.r.t.
the actual Linux version; some caveats, from my foggy memory:
- Need to implement SHM_GROW_ON_WRITE, default for memfd (in progress)
- LTP wants the memfd name exposed to fdescfs
- Linux allows open() of an fdescfs fd with O_TRUNC to truncate after dup.
(?)
Interested parties can install and run LTP from ports (devel/linux-ltp) to
confirm any fixes.
PR: 240874
Reviewed by: kib, trasz
Differential Revision: https://reviews.freebsd.org/D21845
Suppose a thread is running on a CPU in a NUMA domain with no physical
RAM. When an item is freed to a first-touch zone, it ends up in the
cross-domain bucket. When the bucket is full, it gets placed in another
domain's bucket queue. However, when allocating an item, UMA will
always go to the keg upon a per-CPU cache miss because the empty
domain's bucket queue will always be empty. This means that a non-empty
domain's bucket queues can grow very rapidly on such systems. For
example, it can easily cause mbuf allocation failures when the zone
limit is reached.
Change cache_alloc() to follow a round-robin policy when running on an
empty domain.
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D25355
For 1000Mb mode to work reliably TX/RX delays need to be configured
between the TX/RX clock and the respective signals on the PHY
to compensate for differing trace lengths on the PCB.
Reviewed by: manu
MFC after: 1 week
with python3.8 from Focal triggers those.
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D25491
AcpiOsMapMemory is used for device memory when e.g. an _INI method wants
to access physical memory, however, aarch64 pmap_mapbios is hardcoded to
writeback. Search for the correct memory type to use in pmap_mapbios.
Submitted by: Greg V <greg_unrelenting.technology>
Differential Revision: https://reviews.freebsd.org/D25201
in vanilla Linux git tree.
Reviewed by: markj
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D25385
This is a flag from the MAC that says the received packet didn't match
a keycache slot. This isn't technically a problem as WEP keys don't
match keycache slots (they're "global" keys), but it could be useful
for tracking down CCMP decryption failures.
Right now it's a no-op - it mirrors what the AR9300 HAL does and it
just increments a counter. But, hey, maybe one day I'll use it for
diagnosing keycache/CCMP decrypt issues.
The only thing this tunable enables now is reporting to ACPI _OSC that
Active State Power Management and Clock Power Management Capability are
"supported" by the OS.
I've found that at least some Supermicro server boards do not allow OS
to support native PCIe hot-plug unless it reports those capabilities.
After spending significant time in PCIe specs I have found very little
motivation for that, and none of it applies to those motherboards, not
enabling ASPM themselves. So unless OS explicitly wants to save power,
I see nothing for it to do there actually.
I guess it may get sense to support ASPM when we get Thunderbolt support.
Otherwise I have no system with PCIe hot-plug where power saving matters.
It would be nice to enable this by default, but I worry that it affect
power saving of some laptops, even though I haven't noticed that myself.
Not all interrupt sources that affect CIS bit were acknowledged.
Specifically, bits in STATESTS (aka WAKESTS) were left set.
The fix is to disable WAKEEN and clear STATESTS bits before the HDA
interrupt is enabled. This way we should never get any STATESTS bits.
I also added placeholders for all event bits that we currently do not
enable, do not handle and do not clear. This might get useful when / if
we enable any of them.
Reported by: kib (Apollo Lake hardware)
Tested by: kib (earlier, different change)
MFC after: 2 weeks
X-MFC with: r362294
should be used.
For KERN_TLS (and possibly some other future network interface) the mbuf
list passed into sosend() must be ext_pgs mbufs. The krpc could simply
copy all the mbuf data into ext_pgs mbufs before calling sosend(), but
that would be inefficient for large RPC messages.
This patch adds an argument to nfscl_reqstart() to indicate that it should
fill the RPC message into ext_pgs mbufs.
It also adds fields to "struct nfsrv_descript" needed for building NFS RPC
messages in ext_pgs mbufs, along with new flags for this.
Since the argument is always "false", this commit should not result in any
semantic change. However, this commit prepares the code
for future commits that will add support for building of NFS RPC messages
in ext_pgs mbufs.
- Move temporary sglists into the session structure and protect them
with a per-session lock instead of a per-adapter lock.
- Retire an unused session field, and move a debugging field under
INVARIANTS to avoid using the session lock for completion handling
when INVARIANTS isn't enabled.
- Use counter_u64 for per-adapter statistics.
Note that this helps for cases where multiple sessions are used
(e.g. multiple IPsec SAs or multiple KTLS connections). It does not
help for workloads that use a single session (e.g. a single GELI
volume).
Reviewed by: np
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D25457
- Rename from the teardown callback from 'zeroize' to 'cleanup' since
this no longer zeroes keys.
- Change the callback return type to void. Nothing checked the return
value and it was always zero.
- Don't have esp call into ah since it no longer needs to depend on
this to clear the auth key. Instead, both are now private and
self-contained.
Reviewed by: delphij
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D25443
When an IPsec packet has been encrypted or decrypted, the next step in
the packet's traversal through the network stack is invoked from a
crypto worker thread, not from the original calling thread. These
threads need to enter the network epoch before passing packets down to
IP output routines or up to transport protocols.
Reviewed by: ae
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D25444
Linux MADV_DONTNEED is not advisory: it has side effects for anonymous
memory, and some system software depends on that. In particular,
MADV_DONTNEED causes anonymous pages to be discarded. If the mapping is
a private mapping of a named object then subsequent faults are to
repopulate the range from that object, otherwise pages will be
zero-filled. For mappings of non-anonymous objects, Linux MADV_DONTNEED
can be implemented in the same way as our MADV_DONTNEED.
This implementation differs from Linux semantics in its handling of
private mappings, inherited through fork(), of non-anonymous objects.
After applying MADV_DONTNEED, subsequent faults will repopulate the
mapping from the parent object rather than the root of the shadow chain.
PR: 230160
Reviewed by: alc, kib
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D25330
These bzero's should have been explicit_bzero's.
Reviewed by: cem, delphij
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D25437