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74fc72e77d
The aarch32_vdso_pages[] array is unnecessarily confusing. We only ever use the C_VECTORS and C_SIGPAGE slots, and the other slots are unused despite having corresponding mappings (sharing pages with the AArch64 vDSO). Let's make this clearer by using separate variables for the vectors page and the sigreturn page. A subsequent patch will clean up the C_* naming and conflation of pages with mappings. Note that since both the vectors page and sig page are single pages, and the mapping is a single page long, their pages array do not need to be NULL-terminated (and this was not the case with the existing code for the sig page as it was the last entry in the aarch32_vdso_pages array). There should be no functional change as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Vincenzo Frascino <vincenzo.frascino@arm.com> Cc: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20200428164921.41641-2-mark.rutland@arm.com Signed-off-by: Will Deacon <will@kernel.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.