Alexei Starovoitov 0cea651d6f Merge branch 'Enable cpumasks to be used as kptrs'
David Vernet says:

====================

This is part 3 of https://lore.kernel.org/all/20230119235833.2948341-1-void@manifault.com/

Part 2: https://lore.kernel.org/bpf/20230120192523.3650503-1-void@manifault.com/

This series is based off of commit b613d335a743 ("bpf: Allow trusted
args to walk struct when checking BTF IDs").

Changelog:
----------
v2 -> v3:
- Rebase onto master (commit described above). Only conflict that
  required resolution was updating the task_kfunc selftest suite error
  message location.
- Put copyright onto one line in kernel/bpf/cpumask.c.
- Remove now-unneeded pid-checking logic from
  progs/nested_trust_success.c.
- Fix a couple of small grammatical typos in documentation.

v1 -> v2:
- Put back 'static' keyword in bpf_find_btf_id()
  (kernel test robot <lkp@intel.com>)
- Surround cpumask kfuncs in __diag() blocks to avoid no-prototype build
  warnings (kernel test robot <lkp@intel.com>)
- Enable ___init suffixes to a type definition to signal that a type is
  a nocast alias of another type. That is, that when passed to a kfunc
  that expects one of the two types, the verifier will reject the other
  even if they're equivalent according to the C standard (Kumar and
  Alexei)
- Reject NULL for all trusted args, not just PTR_TO_MEM (Kumar)
- Reject both NULL and PTR_MAYBE_NULL for all trusted args (Kumar and
  Alexei )
- Improve examples given in cpumask documentation (Alexei)
- Use __success macro for nested_trust test (Alexei)
- Fix comment typo in struct bpf_cpumask comment header.
- Fix another example in the bpf_cpumask doc examples.
- Add documentation for ___init suffix change mentioned above.
====================

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2023-01-25 07:57:50 -08:00
2022-12-29 16:57:29 -08:00
2023-01-04 12:02:26 -08:00
2022-12-12 17:28:58 -08:00
2023-01-23 09:38:11 -08:00
2022-12-04 01:59:16 +01:00
2022-12-14 09:15:43 -08:00
2022-12-30 17:22:14 +09:00
2022-12-12 17:28:58 -08:00
2022-09-28 09:02:20 +02:00
2022-10-10 12:00:45 -07:00
2023-01-01 13:53:16 -08:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
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