Merge tag 'rcu-fixes.v7.0-20260307a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux
Pull RCU selftest fixes from Boqun Feng:
"Fix a regression in RCU torture test pre-defined scenarios caused by
commit 7dadeaa6e851 ("sched: Further restrict the preemption modes")
which limits PREEMPT_NONE to architectures that do not support
preemption at all and PREEMPT_VOLUNTARY to those architectures that do
not yet have PREEMPT_LAZY support.
Since major architectures (e.g. x86 and arm64) no longer support
CONFIG_PREEMPT_NONE and CONFIG_PREEMPT_VOLUNTARY, using them in
rcutorture, rcuscale, refscale, and scftorture pre-defined scenarios
causes config checking errors.
Switch these kconfigs to PREEMPT_LAZY"
* tag 'rcu-fixes.v7.0-20260307a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux:
scftorture: Update due to x86 not supporting none/voluntary preemption
refscale: Update due to x86 not supporting none/voluntary preemption
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[LLDB] Move Itanium language runtime to C++ language runtime (#169225)
In order to support the Microsoft ABI alongside the Itanium one in the
same process from different DLLs, this moves the Itanium ABI runtime
plugin to the C++ language runtime (see
https://github.com/llvm/llvm-project/pull/168941#discussion_r2547684264).
Before this PR, the C++ language runtime wasn't a plugin. Instead, its
functionality was provided by the Itanium ABI plugin.
All Itanium specific methods are moved to a new class
`ItaniumABIRuntime`. This includes resolving the dynamic type, setting
exception filters, and getting the exception object.
The other methods were added to `CPPLanguageRuntime`.
`language cplusplus demangle` moved to `CommandObjectCPlusPlus`.
The Clang REPL depended on the C++ runtime. Now that it's a plugin, this
failed the layering check. Since the REPL doesn't use the C++ runtime, I
removed the dependency.
build: add `LINKER:` modifier to `/DELAYLOAD:` options (#185086)
When building with the GNU driver, we would pass in `/DELAYLOAD:...`
without indicating that this is a linker flag. `clang` does not
implictly forward non-consumed options to the linker like `cl` does, and
this would cause the build to fail.
[bazel] Disable parse_headers on gtest headers (#185138)
One of the headers has a circular dependency issue that makes it not
isolated
```
.../googletest/include/gtest/internal/custom/gtest-printers.h:53:12: error: no member named 'testing' in the global namespace
53 | *OS << ::testing::PrintToString(S.str());
| ~~^
```
libclc: Move subgroup functions into clc
It turns out there was a generic implementation of the id and sizes.
The practice of splitting every single function into its own file is
kind of a pain here, so introduce a utility header for amdgpu.
With it's own daemonization / fd cleaning code, ssh-agent opens /dev/null
O_RDWR after a pledge without "wpath". This is allowed in current pledge
because "/dev/null" is implicitly allowed to be opened even with the most
restrictive pledges or unveils. This is a design decision in pledge made
at the very beginning, to satisfy libc requirements. We've finally had
enough experience and know how to fix that in the near-future, but need
to review and fix all code which opens these implicit paths.
The fix is to add "wpath", so that "/dev/null" can be opened O_RDWR.
But that is uncomfortable, so we add unveil() allowing "/" with "r",
4 unveil "x" for the potential askpass and helpers to be execve'd,
and "/dev/null" with "wr". As a result filesystem access is substantially
more restricted than before, and ssh-agent is ready for the future pledge
change.
ok djm dtucker
[SLP]Fix the matching of the nodes with the same scalars, but reused
If the scalars are reused and the ReuseShuffleIndices is set, we may
miss matching for the buildvector/gather nodes and add an extra cost
Stop doing access() before execve(). It is a TOCTOU, but also it
forces use of unveil "rx" instead of "x".
This is done by using a pipe() through the fork+execve attempt to
expose execve failure and create the same error return as the access()
used to do.
ok djm dtucker
Use the (no YP, non-threaded) cleaned up copy of getpwent.c placed into
usr.bin/chpass instead of reaching around into libc and using crazy cpp
options.
In the near future the libc version will have more substantial changes
(intersecting with pledge and unveil) which are much more difficult to
manage using cpp features, so we stop this reacharound into libc subtree.
