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e523a5a65f
Most LoongArch 64 machines are using custom "SADR" ACPI extension to perform ACPI S3 sleep. However the standard ACPI way to perform sleep is to write a value to ACPI PM1/SLEEP_CTL register, and this is never supported properly in kernel. Add standard S3 sleep by providing a default DoSuspend function which calls ACPI's acpi_enter_sleep_state() routine when SADR is not provided by the firmware. Also fix suspend assembly code so that ra is set properly before go into sleep routine. (Previously linked address of jirl was set to a0, some firmware do require return address in a0 but it's already set with la.pcrel before). Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> |
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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.