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In future ASICs the MMU will be able to work with multiple page sizes, thus a new flag is added to allow the user to set the requested page size. This flag is added since the whole DRAM is allocated for the user and the user also should be familiar with the memory usage use case. As such, the user may choose to "over allocate" memory in favor of performance (for instance- large page allocations covers more memory in less TLB entries). For example: say available page sizes are of 1MB and 32MB. If user wants to allocate 40MB the user can either set page size to 1MB and allocate the exact amount of memory (but will result in 40 TLB entries) or the user can use 32MB pages, "waste" 8MB of physical memory but occupy only 2 TLB entries. Note that this feature will be available only to ASIC that supports multiple DRAM page sizes. Signed-off-by: Ohad Sharabi <osharabi@habana.ai> Reviewed-by: Oded Gabbay <ogabbay@kernel.org> Signed-off-by: Oded Gabbay <ogabbay@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.