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a845342e6e
Starting with the A11 (T8015) SoC, Apple began using arm64 sysregs for fast IPIs. However, on A11, there is no such things as "Local" fast IPIs, as the SYS_IMP_APL_IPI_RR_LOCAL_EL1 register does not seem to exist. Add a new feature level, used by the compatible "apple,t8015-aic", controlled by a static branch key named use_local_fast_ipi. When use_fast_ipi is true and use_local_fast_ipi is false, fast IPIs are used but all IPIs goes through the register SYS_IMP_APL_IPI_RR_GLOBAL_EL1, as "global" IPIs. Signed-off-by: Nick Chan <towinchenmi@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Sven Peter <sven@svenpeter.dev> Link: https://lore.kernel.org/all/20240901034143.12731-4-towinchenmi@gmail.com |
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| io_uring | ||
| ipc | ||
| kernel | ||
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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.