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ca00f7d999
loongarch, mips, parisc, riscv and sh all print a warning if register_cpu() returns an error. Architectures that use GENERIC_CPU_DEVICES call panic() instead. Errors in this path indicate something is wrong with the firmware description of the platform, but the kernel is able to keep running. Downgrade this to a warning to make it easier to debug this issue. This will allow architectures that switching over to GENERIC_CPU_DEVICES to drop their warning, but keep the existing behaviour. Signed-off-by: James Morse <james.morse@arm.com> Reviewed-by: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk> Reviewed-by: Shaoqin Huang <shahuang@redhat.com> Signed-off-by: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk> Reviewed-by: Gavin Shan <gshan@redhat.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/E1r5R3W-00CszU-GM@rmk-PC.armlinux.org.uk 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.