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
This adjusts freebsd-update.conf and portsnap.conf files in EC2 AMIs to
point at the new AWS-hosted mirror network.
Approved by: re (delphij)
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D25498
dumpon has accepted device names without the prefix ever since r291207.
Since dumpon and savecore are always paired, they ought to accept the same
arguments. Prior to this change, specifying 'dumpdev="da3"' in
/etc/rc.conf, for example, would result in dumpon working just fine but
savecore complaining that "Dump device does not exist".
PR: 247618
Reviewed by: cem, bcr
MFC after: 2 weeks
Sponsored by: Axcient
Differential Revision: https://reviews.freebsd.org/D25500
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
When the RISC-V port was initially committed to FreeBSD, GCC would
generate 64-bit long doubles, and the definitions in _fpmath.h reflected
that. This was changed to 128-bit in GCC later that year [1], but the
definitions were never updated, despite the documented workaround. This
causes printf(3) and friends to interpret only the low 64-bits of a long
double in ldtoa, thereby printing incorrect values.
Update the definitions now that both clang and GCC generate 128-bit long
doubles.
[1] 54b21fc5ae
PR: 242067
Reported by: Dennis Clarke <dclarke@blastwave.org>
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D25420
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
This was added in r293648 to pass -mlong-calls for crt1.o and gcrt1.o.
The use of -mlong-calls was removed in r358851 for LLVM 10.0, leaving
STATIC_CFLAGS empty.
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D25305
* Add examples showing the use of -f, -C, -s, -n
* Rework the two already present examples that were *format* examples
* Remove .Tn suggested by mandoc(1)
* Remove reference to gdb(1) since it is not present in current
Approved by: manpages (gbe)
Differential Revision: https://reviews.freebsd.org/D25406
A file update in 2018 broke many ports as it misidentified shared
libraries as PIE binaries. r333944 reverted part of the change,
restoring ports builds but misidentifying objects in the opposite
direction.
Earlier this month file 5.39 was imported, and then the change
originally from r333944 was recommitted as r362261. However, the
issue was fixed upstream, so r362261 serves no purpose.
PR: 246960, 247461 [exp-run]
Sponsored by: The FreeBSD Foundation
Expand the mentioned RFC in the SEE ALSO section
and reference RFC1701 and RFC1702.
PR: 240250
Reviewed by: bcr (mentor)
Approved by: bcr (mentor)
Obtained from: OpenBSD
MFC after: 7 days
Differential Revision: https://reviews.freebsd.org/D25504
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
The NVMe specification requires unused entries in the Identify, Active
Namespace ID data to be zero. Fix is bzero the provided page, similar to
what is done for the Namespace Descriptors list.
Fixes UNH Tests 2.6 and 2.9
Tested by: Jason Tubnor
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D24901
Dataset Management range specifications may have a zero length (a.k.a.
an empty range definition). Handle the case of all ranges being empty by
completing with Success (DSM commands are advisory only). For
Deallocate, skip empty range definitions when sending TRIM's to the
backing storage.
Fixes UNH Test 2.2.4
Reviewed by: imp
Tested by: Jason Tubnor
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D24900
If the Predictable Latency Mode is not supported, NVMe Controllers must
return Invalid Field in Command status for the Get Features command
with IDs:
- Predictable Latency Mode Config
- Predictable Latency Mode Window
Fixes UNH Tests 3.6
Tested by: Jason Tubnor
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D24899
This adds support for NVMe Get Features, Interrupt Vector Config
parameter error checking done by the UNH compliance tests.
Fixes UNH Tests 1.6.8 and 5.5.6
Tested by: Jason Tubnor
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D24898
This commit updates the Identify Controller data to advertise the
Controller supports a single firmware slot and that firmware slot 1 is
read-only. Additionally, it returns an "Invalid Firmware Slot" error
when the host issues any Firmware Commit command (a.k.a. Firmware
Activate).
Fixes UNH Test 5.5.3
Tested by: Jason Tubnor
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D24897
This adds support to bhyve's NVMe device emulation for processing Async
Event Requests but not returning them (i.e. Async Event Notifications).
Fixes UNH Test 5.5.2
Tested by: Jason Tubnor
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D24896
Add checks that the combination of Starting LBA and Number of Logical
Blocks in a command will not exceed the range of the underlying storage.
Note that because NVMe specifices the Starting LBA as a uint64_t, care
must be taken when converting it and the block count to avoid an integer
overflow.
Fixes UNH Tests 2.2.3, 2.3.2, and 2.4.2
Tested by: Jason Tubnor
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D24895
SMART data in NVMe includes statistics for number of read and write
commands issued as well as the number of "data units" read and written.
NVMe defines "data unit" as thousands of 512 byte blocks (e.g. 1 data
unit is 1-1,000 512 byte blocks, 3 data units are 2,001-3,000 512 byte
blocks).
This patch implements counters for:
- Data Units Read
- Data Units Written
- Host Read Commands
- Host Write Commands
and exposes the values when the guest reads the SMART/Health Log Page.
Fixes UNH Test 1.3.8
Tested by: Jason Tubnor
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D24894
For NVMe emulation, validate the Data Set Management LBA ranges do not
exceed the capacity of the backing storage. If they do, return an "LBA
Out of Range" error.
Fixes UNH Test 2.2.3
Tested by: Jason Tubnor
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D24893
NVMe controllers advertise their Max Data Transfer Size (MDTS) to limit
the number of page descriptors in an I/O request. Take advantage of this
and size the struct pci_nvme_ioreq accordingly.
Ensuring these values match both future-proofs the code and allows
removing some complexity which only exists to handle this possibility.
Tested by: Jason Tubnor
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D24891
Split the NVM I/O function (i.e. nvme_opc_write_read) into separate
functions - one for RAM based backing-store and another for disk based
backing-store for easier maintenance. No functional changes.
Tested by: Jason Tubnor
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D24890
The Format NVM command mainly allows the host to specify the block size
and protection information used for the Namespace. As the bhyve
implementation simply maps the capabilities of the backing storage
through to the guest, there isn't anything to implement. But a side
effect of the format is the NVMe Controller shall not return any data
previously written (i.e. erase previously written data). This patch
implements this later behavior to provide a compliant implementation.
Fixes UNH Test 1.6
Tested by: Jason Tubnor
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D24889
Create a generic Get/Set Features by saving off the contents of CDW11
from the Set command and returning the saved value in the completion of
the Get command. Implementation allows providing optional implementation
for both Set and Get.
Add infrastructure to determine which feature ID's are namespace
specific and flag violations of this category of error.
Also adds the feature specific behavior of Set Features, Number of
Queues to only allow this command once per Controller reset.
Fixes UNH Tests 1.2, 5.4, and 5.5.6
Tested by: Jason Tubnor
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D24887
Fix the logic in nvme_opc_get_log_page to calculate the number of DWORDS
(uint32_t) instead of WORDS (uint16_t) for the byte length. And only
return the allowed number of Log Page bytes as determined by the user
request and actual size of the requested log page.
Fixes UNH Test 1.3
Tested by: Jason Tubnor
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D24885
Consolidate the code which writes Completion Queue entries and updates
the CQ doorbell value. While in the neighborhood, convert the "toggle CQ
phase bit" code to use an XOR operation instead of an "if/else" branch.
Tested by: Jason Tubnor
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D24882
The NVMe code attempted to ensure thread safety through a combination of
using atomics and a "busy" flag. But this approach leads to unavoidable
race conditions.
Fix is to use per-queue mutex locks to ensure thread safety within the
queue processing code. While in the neighborhood, move all the queue
initialization code to a common function.
Tested by: Jason Tubnor
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D19841
This adds support for the NVMe I/O command Flush. For block-based
devices, submit a DIOCGFLUSH to the backing storage. Otherwise, command
is treated like a NOP and completes with a Successful status.
Tested by: Jason Tubnor
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D24880
This refactors the NVMe I/O command processing function to make adding
new commands easier. The main change is to move command specific
processing (i.e. Read/Write) to separate functions for each NVMe I/O
command and leave the common per-command processing in the existing
pci_nvme_handle_io_cmd() function.
While here, add checks for some common errors (invalid Namespace ID,
invalid opcode, LBA out of range).
Add myself to the Copyright holders
Reviewed by: imp
Tested by: Jason Tubnor
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D24879
Convert the debug and warning logging macros to be parameterized and
correctly use bhyve's PRINTLN macro.
Reviewed by: imp
Tested by: Jason Tubnor
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D24878
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
When job control is not enabled, the shell ignores SIGINT while waiting for
a foreground process unless that process exits on SIGINT. In this case, the
foreground process is sleep and it does not exit on SIGINT because the
signal is only sent to the shell. Depending on order of events, this could
cause the SIGINT to be unexpectedly ignored.
On lightly loaded bare metal, the chance of this happening tends to be less
than 0.01% but with higher loads and/or virtualization it becomes more
likely.
Starting the sleep in background and using the wait builtin ensures SIGINT
will not be ignored.
PR: 247559
Reported by: lwhsu
MFC after: 1 week
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
