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The kernel currently alway prints: "Use ACPI SPCR as default console: No/Yes " even on systems that lack an SPCR table. This can mislead users into thinking the SPCR table exists on the machines without SPCR. With this change, the "Yes" is only printed if the SPCR table is present, parsed and !param_acpi_nospcr. This avoids user confusion on SPCR-less systems. Signed-off-by: Li Chen <chenl311@chinatelecom.cn> Acked-by: Hanjun Guo <guohanjun@huawei.com> Link: https://lore.kernel.org/r/20250620131309.126555-3-me@linux.beauty Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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.