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The LSE atomic code uses asm register variables to ensure that parameters are allocated in specific registers. In the majority of cases we specifically ask for an x register when using 64-bit values, but in a couple of cases we use a w regsiter for a 64-bit value. For asm register variables, the compiler only cares about the register index, with wN and xN having the same meaning. The compiler determines the register size to use based on the type of the variable. Thus, this inconsistency is merely confusing, and not harmful to code generation. For consistency, this patch updates those cases to use the x register alias. There should be no functional change as a result of this patch. Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> |
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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.