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This patch factors out the allocator for signal frame optional records into a separate function, to ensure consistency and facilitate later expansion. No overrun checking is currently done, because the allocation is in user memory and anyway the kernel never tries to allocate enough space in the signal frame yet for an overrun to occur. This behaviour will be refined in future patches. The approach taken in this patch to allocation of the terminator record is not very clean: this will also be replaced in subsequent patches. For future extension, a comment is added in sigcontext.h documenting the current static allocations in __reserved[]. This will be important for determining under what circumstances userspace may or may not see an expanded signal frame. Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Dave Martin <Dave.Martin@arm.com> Signed-off-by: Will Deacon <will.deacon@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.