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A mirror of the official Linux kernel repository just in case
eed807f626
Instead of forcing all arguments to be referenced pointers with non-zero reg->ref_obj_id, tweak the definition of KF_TRUSTED_ARGS to mean that only PTR_TO_BTF_ID (and socket types translated to PTR_TO_BTF_ID) have that constraint, and require their offset to be set to 0. The rest of pointer types are also accomodated in this definition of trusted pointers, but with more relaxed rules regarding offsets. The inherent meaning of setting this flag is that all kfunc pointer arguments have a guranteed lifetime, and kernel object pointers (PTR_TO_BTF_ID, PTR_TO_CTX) are passed in their unmodified form (with offset 0). In general, this is not true for PTR_TO_BTF_ID as it can be obtained using pointer walks. Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Link: https://lore.kernel.org/r/cdede0043c47ed7a357f0a915d16f9ce06a1d589.1663778601.git.lorenzo@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
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.