mirror of
https://github.com/torvalds/linux.git
synced 2026-08-01 20:22:08 +02:00
Linux kernel source tree
7d14fbc569
Intel made a late change to the AVX10 specification that removes support for a 256-bit maximum vector length and enumeration of the maximum vector length. AVX10 will imply a maximum vector length of 512 bits. I.e. there won't be any such thing as AVX10/256 or AVX10/512; there will just be AVX10, and it will essentially just consolidate AVX512 features. As a result of this new development, my strategy of providing both *_avx10_256 and *_avx10_512 functions didn't turn out to be that useful. The only remaining motivation for the 256-bit AVX512 / AVX10 functions is to avoid downclocking on older Intel CPUs. But in the case of AES-XTS and AES-CTR, I already wrote *_avx2 code too (primarily to support CPUs without AVX512), which performs almost as well as *_avx10_256. So we should just use that. Therefore, remove the *_avx10_256 AES-XTS and AES-CTR functions and algorithms, and rename the *_avx10_512 AES-XTS and AES-CTR functions and algorithms to *_avx512. Make Ice Lake and Tiger Lake use *_avx2 instead of *_avx10_256 which they previously used. I've left AES-GCM unchanged for now. There is no VAES+AVX2 optimized AES-GCM in the kernel yet, so the path forward for that is not as clear. However, I did write a VAES+AVX2 optimized AES-GCM for BoringSSL. So one option is to port that to the kernel and then do the same cleanup. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|---|---|---|
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| 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 | ||
| .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.