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3729fe8cbb
Delegate illegal instruction fault to VS mode by default to avoid such exceptions being trapped to HS and redirected back to VS. The delegation of illegal instruction fault is particularly important to guest applications that use vector instructions frequently. In such cases, an illegal instruction fault will be raised when guest user thread uses vector instruction the first time and then guest kernel will enable user thread to execute following vector instructions. The fw pmu event counter remains undeleted so that guest can still query illegal instruction events via sbi call. Guest will only see zero count on illegal instruction faults and know 'firmware' has delegated it. Reviewed-by: Anup Patel <anup@brainfault.org> Signed-off-by: Xu Lu <luxu.kernel@bytedance.com> Link: https://lore.kernel.org/r/20250714094554.89151-1-luxu.kernel@bytedance.com Signed-off-by: Anup Patel <anup@brainfault.org> |
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| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
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| net | ||
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| virt | ||
| .clang-format | ||
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| .cocciconfig | ||
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| .get_maintainer.ignore | ||
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| .gitignore | ||
| .mailmap | ||
| .pylintrc | ||
| .rustfmt.toml | ||
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| 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.