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fb0ff0a95d
Currently any isa extension found in the isa string is set in the isa bitmap. An isa extension set in the bitmap indicates that the extension is present and may be used (a.k.a is enabled). However, when an extension cannot be used due to missing dependencies or errata it should not be added to the bitmap. Introduce a function where additional checks may be placed in order to determine if an extension should be enabled or not. Note, the checks may simply indicate an issue with the DT, but, since extensions may be used in early boot, it's not always possible to simply produce an error at the point the issue is determined. It's best to keep the extension disabled and produce an error. No functional change intended, as the function is only introduced and always returns true. A later patch will provide checks for an isa extension. Signed-off-by: Andrew Jones <ajones@ventanamicro.com> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Link: https://lore.kernel.org/r/20221129143447.49714-3-ajones@ventanamicro.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com> |
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| 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 | ||
| .cocciconfig | ||
| .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 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.