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There are two consumers of apic=: apic_set_verbosity() for setting the APIC debug level; parse_apic() for registering APIC driver by hand. X86-32 supports both of them, but sometimes, kernel issues a weird warning. eg: when kernel was booted up with 'apic=bigsmp' in command line, early_param would warn like that: ... [ 0.000000] APIC Verbosity level bigsmp not recognised use apic=verbose or apic=debug [ 0.000000] Malformed early option 'apic' ... Wrap the warning code in CONFIG_X86_64 case to avoid this. Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: peterz@infradead.org Cc: rdunlap@infradead.org Cc: corbet@lwn.net Link: https://lkml.kernel.org/r/20171204040313.24824-1-douly.fnst@cn.fujitsu.com |
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| README | ||
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.