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commit a9d13433fe17be0e867e51e71a1acd2731fbef8d upstream. ARCH_STRICT_ALIGN is used for hardware without UAL, now it only control the -mstrict-align flag. However, ACPI structures are packed by default so will cause unaligned accesses. To avoid this, define ACPI_MISALIGNMENT_NOT_SUPPORTED in asm/acenv.h to align ACPI structures if ARCH_STRICT_ALIGN enabled. Cc: stable@vger.kernel.org Reported-by: Binbin Zhou <zhoubinbin@loongson.cn> Suggested-by: Xi Ruoyao <xry111@xry111.site> Suggested-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.