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2b235765e9
Use the greatest and latest uaccess construct to get an optimal code. Before : lea (%r9,%rcx,1),%r10 movabs $<USER_PTR_MAX>,%r11 mov $0xfffffff2,%eax cmp %rcx,%r10 jb ffffffff81cdc312 <put_cmsg+0x152> cmp %r11,%r10 ja ffffffff81cdc312 <put_cmsg+0x152> stac lfence mov %r9,(%rcx) After: movabs $<USER_PTR_MAX>,%r9 cmp %r9,%rax cmova %r9,%rax stac mov %rcx,(%rax) Signed-off-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20250925224914.3590290-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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| certs | ||
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| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .clippy.toml | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .pylintrc | ||
| .rustfmt.toml | ||
| 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 reStructuredText 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.