To avoid data loss, make sure both the receive and transmit data toggles
get reset, before trying to read or write any data.
MFC after: 1 week
Sponsored by: NVIDIA Networking
Samsung PM983 SSD has a 0xca logpage. It has more information compared
to Intel's this patch tested on PM983 M2 SSD and works as expected.
Reviewed by: imp@
Approved by: kp@
Event: Aberdeen Hackathon 2022
Differential revision: https://reviews.freebsd.org/D33749
Adds a few struct members and a function to get i915_runtime_pm_status()
to compile in drm-kmod.
Differential Revision: https://reviews.freebsd.org/D36749
Sponsored by: Google, Inc. (GSoC 2022)
If the next column was blank, then the length of the following entry
was computed as the end of the following entry minus a global variable
"blank" which is not in the same string or allocation. Instead, save
the start value of 'p' explicitly instead of abusing '*ep'. Possibly
we should just increment p before saving it in sp in the 'blank' case,
but at worst that would just mean maxlen might be one char too large
which should be harmless.
Reviewed by: brooks
Differential Revision: https://reviews.freebsd.org/D36832
Using a pointer passed to realloc() after realloc() even for pointer
arithmetic is UB. It also breaks in practice on CHERI systems as
the updated value of 'sp' in this case would have had the bounds from
the old allocation.
This would be much cleaner if elem were a std::vector<char *>.
Reviewed by: brooks, emaste
Reported by: GCC -Wuse-after-free
Differential Revision: https://reviews.freebsd.org/D36831
- Add /* FALLTHROUGH */ comments for intentional fall throughs in
getargs().
- Remove id strings to quiet -Wunused-const-variable warnings from
GCC.
- While here, remove __FBSDID.
Reviewed by: brooks
Differential Revision: https://reviews.freebsd.org/D36830
Note that this required adding missing ()'s around the outermost level
of MSK_READ_MIB*. Otherwise, the void cast was only applied to the
first register read. This also meant that MSK_READ_MIB64 was pretty
broken as the uint64_t cast only applied to the first 16-bit register
read in each MSK_READ_MIB32 invocation and the 32-bit shift was only
applied to the second register read of the pair.
Reviewed by: imp, emaste
Reported by: GCC -Wunused-value
Differential Revision: https://reviews.freebsd.org/D36777
As an optimization, vm_page_activate() avoids requeuing a page that's
already in the active queue. A page's location in the active queue is
mostly unimportant.
When a page is unwired and placed back in the page queues,
vm_page_unwire() avoids moving pages out of PQ_ACTIVE to honour the
request, the idea being that they're likely mapped and so will simply
get bounced back in to PQ_ACTIVE during a queue scan.
In both cases, if the page was logically in PQ_ACTIVE but had not yet
been physically enqueued (i.e., the page is in a per-CPU batch), we
would end up clearing PGA_REQUEUE from the page. Then, batch processing
would ignore the page, so it would end up unwired and not in any queues.
This can arise, for example, when a page is allocated and then
vm_page_activate() is called multiple times in quick succession. The
result is that the page is hidden from the page daemon, so while it will
be freed when its VM object is destroyed, it cannot be reclaimed under
memory pressure.
Fix the bug: when checking if a page is in PQ_ACTIVE, only perform the
optimization if the page is physically enqueued.
PR: 256507
Fixes: f3f38e2580 ("Start implementing queue state updates using fcmpset loops.")
Reviewed by: alc, kib
MFC after: 1 week
Sponsored by: E-CARD Ltd.
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D36839
Rather than not including it on all 64-bit platforms, just include it on
32-bit ones.
Reviewed by: imp, jhb
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D36422
MACHINE_ABI is a list of properties of the ABI used for MACHINE_ARCH.
It should be used in place of long conditionals on MACHINE_ARCH where
practical.
The following properties are indicated with one of the follow values:
Byte order: big-endian, little-endian
Floating point ABI: soft-float, hard-float
Size of long (size_t, etc): long32, long64
Pointer type: ptr32, ptr64
Size of time_t: time32, time64
For example, i386 targets will be:
MACHINE_ABI= big-endian hard-float long32 ptr32 time32
Reviewed by: imp
Obtained from: CheriBSD
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D36421
The MACHINE_ABI and TARGET_ABI variables are used to set the middle of
the target triple (e.g., "-unknown-" or "-gnueabihf-"). They are not set
by any tool in the base system and I've only found the latter mentioned
in one review online. As such, rename them to to MACHINE_TRIPLE_ABI and
TARGET_TRIPLE_ABI to clear the way to use MACHINE_ABI as a supplement to
MACHINE_CPU, etc.
Reviewed by: imp, jhb
Obtained from: CheriBSD
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D36420
Use time_t rather than uint32_t to represent the timestamps. That means
we have 64 bits rather than 32 on all platforms except i386, avoiding
the Y2K38 issues on most platforms.
Reviewed by: Zhenlei Huang
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D36837
On certain cloud platforms (Google Cloud, Packet.net and others) the
DHCP server offers a /32 address. This makes adding the default route
fail since it is not reachable via any interface. Linux's
dhclient-script seem to usually have a special case for that and
explicitly adds an interface route to the router's address.
FreeBSD's dhclient-script already has a special case for when the router
address is the same as the leased address. Now also add one for when
it's a different address that doesn't fall in the interface's subnet.
PR: 241792
Event: Aberdeen hackathon 2022
Submitted by: sigsys@gmail.com
Reviewed by: dch, kp, bz (+1 on the idea, not reviewed), thj
MFC after: 1 week
While at it optimise "case 3" into a default.
This way there is no need to initialize the "mark" variable in the beginning,
because all cases set it.
MFC after: 1 week
Sponsored by: NVIDIA Networking
Differential Revision: https://reviews.freebsd.org/D36042
On the receive socket, recvmsg() and poll()/select() is called.
Therefore, CAP_EVENT is needed in addition to CAP_RECV..
While there, check the socket for readbility before calling recvmsg().
Reviewed by: markj@
MFC after: 3 days
Sponsored by: Netflix, Inc.
Differential Revision: https://reviews.freebsd.org/D36878
This allows invop-based providers (i.e., fbt and kinst) to expose the
register file of the CPU at the point where the probe fired. It does
not work for SDT providers because their probes are implemented as plain
function calls and so don't save registers. It's not clear what
semantics "regs" should have for them anyway.
This is akin to "uregs", which nominally provides access to the
userspace registers. In fact, DIF already had a DIF_VAR_REGS variable
defined, it was simply unimplemented.
Usage example: print the contents of %rdi upon each call to
amd64_syscall():
fbt::amd64_syscall:entry {printf("%x", regs[R_RDI]);}
Note that the R_* constants are defined in /usr/lib/dtrace/regs_x86.d.
Currently there are no similar definitions for non-x86 platforms.
Reviewed by: christos
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D36799
nvlist_find_string() would return a copy of the found value, but callers
assumed they would have to make their own copy. It's simpler to change
nvlist_find_string() than it is to change callers, so do that.
Reported by: Coverity
Summary:
The indirect flag tells the hardware to use a flat or two level table.
As we only support using the flat table ensure the flag that marks
which is in use is set correctly.
We can't rely on this being set correctly as some firmware may set the
indirect flag, e.g. booting from LinuxBoot.
Reviewed by: imp
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D36873
From enh at google.com via openbsd-tech mailing list via pfg@:
The existing test is wrong for LP64, where size_t has twice as many
relevant bits as int, not just one. (Found by inspection by
rprichard.)
Add sysctl/tunable to control Electromechanical Interlock support.
Disable it by default since Linux does not do it either and it seems
the number of systems having it broken is higher than having working.
This fixes NVMe backplane operation on ASUS RS500A-E11-RS12U server
with AMD EPYC 7402 CPU, where attempts to control reported interlock
for some reason end up in PCIe link loss, while interlock status does
not change (it is not really there).
MFC after: 2 weeks
By adding missing ifdefs for INET and INET6 when building LINT-NOIP .
Differential Revision: https://reviews.freebsd.org/D36731
Sponsored by: NVIDIA Networking
By updating function arguments for ipsec_kmod_ctlinput() which is used
when loading IPSEC support via kernel modules.
Differential Revision: https://reviews.freebsd.org/D36731
Sponsored by: NVIDIA Networking
When converting times to and from units which have many leading zeros,
it pays off to compute the greatest common divisor first, and then do the
scaling product. This way all time unit conversion comes down to scaling a
signed or unsigned 64-bit value by a fraction represented by two signed
or unsigned 32-bit integers.
SBT_1S is defined as 2^32 . When scaling using powers of 10 above 1,
the gcd of SBT_1S and 10^N is always greater than or equal to 4,
when N is greater or equal to 2.
Scaling a sbt value to milliseconds is then done by multiplying by
(1000 / 8) and dividing by (2^32 / 8).
This trick allows for higher precision at very little additional CPU cost.
It shall also be noted that the Xtosbt() functions prior to this patch,
sometimes were off-by-one:
For example when converting 1 / 8 of a second to sbt as 125ms the old sbt
conversion function would compute 0x20000001 while the new function computes
0x20000000 which multiplied by 8 becomes SBT_1S, which is the correct value.
Reviewed by: kib@
Differential Revision: https://reviews.freebsd.org/D36857
MFC after: 1 week
Sponsored by: NVIDIA Networking
