LinuxKPI: add str_read_write()
Needed by a wireless driver.
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
Reviewed by: kib, emaste
Differential Revision: https://reviews.freebsd.org/D55029
nvmecontrol: Pass 1 to uint8_t arg
The rae arg is uint8_t (which we then shift over to the right bit. Pass
'1' instead of 'true' here to match the interface. While true is
promoted to (uint8_t)1, we don't use it as a bool in read_logpage().
Fixes: 5322eec86ae4 ("nvmecontrol: Always set the RAE bit on telemetry-log requests")
Sponsored by: Netflix
Reviewed by: chs
Differential Revision: https://reviews.freebsd.org/D55060
acpi: 'hw.acpi.s4bios' sysctl: Change type to bool, expand description
Another boolean, indicating hardware support, will be introduced in next commit.
Thanks to the previous commit modifying sysctl_handle_bool(), this
change is backwards-compatible with old programs using an integer in and
out of sysctl(3).
Reviewed by: obiwac
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D54626
acpi: Move sysctl tree set up at end of initialization
Setting up the sysctl tree later:
1. Fixes not de-registering sysctl knobs on failure to attach.
2. Avoids having inconsistent knob values exposed during a brief moment.
Reviewed by: imp, obiwac
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D54926
sysctl(9): Booleans: Accept integers to ease knob conversion
In sysctl_handle_bool(), if the output buffer (for the old value) has
room for exactly 4 bytes (sizeof(int)), then output the current boolean
value as an integer rather than a 'uint8_t'. Conversely, if 4 bytes
exactly remain in the input buffer (for the new value), treat them as an
integer and derive the new boolean value from it.
Doing so allows to convert existing integer syscstl knobs that are
interpreted as a boolean into true boolean ones while staying
backwards-compatible.
That brings no drawback as no code currently uses sysctl_handle_bool()
as part of a series of calls to sysctl_handle_*() functions for
(de)serialization of some compound structure. If that case ever
materializes, it can be easily solved, e.g., by creating
a sysctl_handle_bool_strict() variant.
In the future, we might want to go further and generally be more liberal
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amd64: parse_memmap(): Move comment about size at proper place
While here, declare 'size' only in the relevant block.
No functional change (intended).
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
arm64/vmm: Set and use the fine-grained traps
Set the Fine-grained trap registers to trap any features we don't
support. These are expected to be more useful when we support nested
virtualisation, so for now just the base features and GICv3 are not
trapped.
As nested virtualisation will require VHE we only set the fine-grained
trap registers when VHE is used.
Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D54687
arm64/vmm: Add HYP_FEAT_FGT{,2}
Add the macros and detection for Fine-grained traps (FEAT_FGT and
FEAT_FGT2).
Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D54686
virtio_p9fs: Use VIRTIO_SIMPLE_PNPINFO
This allows us to also use the common VIRTIO_SIMPLE_PROBE and to have
devmatch load the driver when detected.
Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D54684
libc/aarch64: Add memset for a 64 byte dc zva
On arm64 we can use the "dc zva" instruction to zero memory. The CPU
tells software if the instruction is implemented, and if so the size
and alignment it will use.
When the size is 64-bytes the Arm Optimized Routines implementation of
memset can use dc zva to zero memory, and has a build flag to skip
checking.
Use this flag to build a version of memset that will be used when this
assumption is true.
Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D54776
libc/aarch64: Add a Makefile.inc dependency
If we update Makefile.inc it may be to change the contents of these
files.
Reviewed by: imp
Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D54774
libc/aarch64: Split out the MOPS functions
This allows static binaries to only include the functions they
reference.
Reviewed by: imp
Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D54775
sockets: let protocols be responsible for socket buffer mutexes
Sockets that implement their own socket buffers (marked with PR_SOCKBUF)
are now also responsible for initialization of socket buffer mutexes in
pr_attach and for destruction in pr_detach (or pr_close).
This removes a big bunch of reported LORs, as now WITNESS is able to see
that tcp(4) socket buffer mutex and netlink(4) socket buffer mutex are two
different things. Distinct names also improve diagnostics for blocked
threads.
This also removes a hack from unix(4), where we used to mtx_destroy().
Also removes an innocent bug from unix(4) where for accept(2)-ed socket
soreserve() was called twice. This one was innocent since first call to
soreserve() was asking for 0 bytes of space.
This slightly increased amount of pasted code in TCP's syncache_socket().
The problem is that while for sockets created with socket(2) it is
pr_attach responsible for call to soreserve() (including !PR_SOCKBUF
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sh.1: Fix rendering error due to redundant .El
Due to this all the rest of the items in the Built-in Commands section
were not rendered at all.
Fixes: 2711852bd9ac ("sh.1: Provide detailed job control documentation")
MFC after: 3 days
Reviewed by: emaste, ziaee
Differential Revision: https://reviews.freebsd.org/D55080
libpmc: Fix the L3 counters for AMD Zen 1-4
On AMD processors libpmc was using the topic field (based on filename) to
determine the counter's subclass. Unfortunately, the JSON definitions for
AMD Zen 1-4 have the L3 counters in files shared with other counters.
This change has libpmc to use the pmu field (which is derived from the Unit
field in JSON) to determine the correct counter subclass.
Reviewed by: mhorne
MFC after: 2 weeks
Sponsored by: Netflix
Pull Request: https://github.com/freebsd/freebsd-src/pull/1984
powerpc/pmap: Use a constant for HPT superpage shift
There are no plans to allow multiple sizes of HPT superpages, so just use a
constant for it.
MFC after: 3 weeks
Fixes: 1bc75d77e9 ("powerpc/pmap/oea64: Make PV_LOCK superpage sized")
vm_phys: Check `RB_FIND()` return value in case it is NULL
When trying to unregister a fictitious range in
`vm_phys_fictitious_unreg_range()`, the function checks the properties
of the looked up segment, but it does not check if a segment was found
in the first place.
This can happen with the amdgpu DRM driver which could call
`vm_phys_fictitious_unreg_range()` without a fictitious range registered
if the initialisation of the driver failed (for example because
firmwares are unavailable).
The code in the DRM driver was improved to avoid that, but
`vm_phys_fictitious_unreg_range()` should still check the return value
of `RB_FIND()` before trying to dereference the segment pointer and
panic with a page fault.
Reviewed by: emaste
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D55076
libc/tests: Clean up *dir() tests
Mainly, avoid reusing the name of one of the functions we should be
testing (but aren't) for local variables.
Sponsored by: Klara, Inc.
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D55054
hwpstate_amd(4): Rename CPPC register macros
To be closer to AMD's official terminology, except for the "Lowest
Non-Linear Performance" field which we label as 'EFFICIENT_PERF' closer
to Intel's ("Most Efficient Performance"), and to clear possible
confusion.
No functional change (intended).
Reviewed by: aokblast
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D54998
hwpstate_amd(4): Fix BITS_WITH_VALUE()/SET_BITS_VALUE() to obey the mask
While here, rename an argument of BITS_VALUE() to be consistent with the
other macros.
Reviewed by: aokblast
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D54997
x86: x86_msr_op(): Simplify assertions
Simplify them by moving them into more natural places, i.e., default
cases of 'switch' statements.
No functional change (intended).
Reviewed by: kib
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D54996
x86: x86_msr_op(): MSR_OP_LOCAL: Disable interrupts on atomic ops
On MSR_OP_LOCAL and non-naturally-atomic operations (MSR_OP_ANDNOT and
MSR_OP_OR), there is no guarantee that we are not interrupted between
reading and writing the MSR, and that interruption could actually
perform some operation on that MSR, which would be lost.
Prevent that problem by temporarily disabling interrupts around MSR
manipulation.
Reviewed by: kib
Discussed with: markj
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D54996
unmount(2): do not allow MNT_DEFERRED or MNT_RECURSE flags from userspace
Repprted and tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
