[APInt] Introduce carry-less multiply primitives (#168527)
In line with a std proposal to introduce std::clmul, and in preparation
to introduce a clmul intrinsic, implement carry-less multiply primitives
for APIntOps, clmul[rh].
Ref: https://isocpp.org/files/papers/P3642R3.html
Reland [Support][Jobserver][Tests] Simplify default executor init (#168165)
and make (#165264)
Truely recover Executor::getDefaultExecutor. The previous change missed
std::unique_ptr, which is needed in a normal program exit, since only
with that ThreadPoolExecutor destructor will be called in a normal
program exit, where it ensures the executor has been stopped and waits
for worker threads to finish. The wait is important as it prevents
intermittent crashes on Windows when the process is doing a full exit.
[lldb] update lldb-server platform help parsing (attempt 3) (#164904)
* original change #162730
* with windows fix #164843
* remove timeout that was pointed out in the comment above
* Remove test that starts and listens on a socket to avoid timeout
issues
[AArch64][GISel] Don't crash in known-bits when copying from vectors to non-vectors (#168081)
Updates the demanded elements before recursing through copies in case
the type of the source register changes from a non-vector register to a
vector register.
Fixes #167842.
[lldb] Support integer registers with more than 64 bits. (#166363)
In this PR we are proposing to change LLDB codebase so that LLDB is able
to print values of integer registers that have more than 64-bits (even
if the number of bits is not equal to 128).
---------
Co-authored-by: Matej Košík <matej.kosik at codasip.com>
Co-authored-by: Jonas Devlieghere <jonas at devlieghere.com>
[llvm][AddressSanitizer] option for applying AddressSanitizer to specific address spaces (#167770)
For some backends, e.g., BPF, it is desirable to only sanitize memory
belonging to specific address spaces. More specifically, it is sometimes
desirable to only apply address sanitization for arena memory belonging
to address space 1. However, AddressSanitizer currently does not support
selectively sanitizing address spaces. Add a new option to select which
address spaces to apply AddressSanitizer to.
No functional change for existing targets (namely AMD GPU) that hardcode
which address spaces to sanitize
rc.subr: Support setting the audit user when starting services
When an unprivileged user restarts a service using, e.g., sudo, the
service runs with the audit user ID set to that of the unprivileged
user. This can have surprising effects: for instance, a user that
restarts a jail that is running sshd will end up with their UID attached
to all audit logs associated with users who log in via that sshd
instance. (sshd will set the audit user, but this is disallowed in
jails by default.)
Add support for rc.conf directives which cause rc to override the audit
user. Specifically, make <name>_audit_user=foo cause the audit user to
be set to "foo" for service <name>. A plain audit_user=foo directive
causes all services to be started as foo.
Note, like other similar rc features, this feature is limited to rc
services which are run by executing a command. Shell functions can't be
wrapped this way.
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rc.subr: Remove misguided cpuset usage
When running an rc command, if the target rc script defines
<command>_cmd, e.g., start_cmd=..., then the run_rc_command() executes
that instead of $command. In general it's a shell function, and
"cpuset -l <n> <shell function>" doesn't work.
Moreover, it doesn't really make sense to run cpuset for anything other
than start_cmd.
Other optional isolation mechanisms (e.g., <name>_fib,
<name>_chroot) are only used when invoking $command directly as part of
the "start" command. Make <name>_cpuset consistent with everything else
by removing these extraneous cpuset invocations.
Reviewed by: 0mp
MFC after: 2 weeks
Sponsored by: Modirum MDPay
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D53746
kevent: Hold the knlist mutex when invoking f_event(NOTE_FORK)
In general f_event is supposed to be called with the knlist mutex held,
so lock it earlier to follow this protocol. Also make sure that the
update to kn_fflags is synchronized.
Lock the kqueue itself earlier in the case where the knote is activated,
to avoid locking and unlocking the kqueue twice.
PR: 291005
Reported by: Qiu-ji Chen <chenqiuji666 at gmail.com>
Reviewed by: kib
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D53762
rc.subr: Try to make svjc option handling a bit easier to read
Specifically, make this code fit in fewer columns:
- deindent cases to conform to the usual style,
- use a local variable to minimize duplication in each case.
No functional change intended.
Reviewed by: 0mp, netchild
MFC after: 2 weeks
Sponsored by: Klara, Inc.
Sponsored by: Modirum MDPay
Differential Revision: https://reviews.freebsd.org/D53754
setaudit: Add an update mode
By default, setaudit(8) overwrites the whole audit session state. For
the purpose of overwriting only a single field, e.g., the audit user,
this is inconvenient. Add -U to accomodate this case: when specified,
setaudit(8) will first fetch the current session state block and then
will only overwrite those fields specified on the command line.
Reviewed by: csjp
MFC after: 2 weeks
Sponsored by: Modirum MDPay
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D53672
