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80f0251231
>From LoPAR level 2.8, "ibm,ddw-extensions" index 3 can make the number of outputs from "ibm,query-pe-dma-windows" go from 5 to 6. This change of output size is meant to expand the address size of largest_available_block PE TCE from 32-bit to 64-bit, which ends up shifting page_size and migration_capable. This ends up requiring the update of ddw_query_response->largest_available_block from u32 to u64, and manually assigning the values from the buffer into this struct, according to output size. Also, a routine was created for helping reading the ddw extensions as suggested by LoPAR: First reading the size of the extension array from index 0, checking if the property exists, and then returning it's value. Signed-off-by: Leonardo Bras <leobras.c@gmail.com> Tested-by: David Dai <zdai@linux.vnet.ibm.com> Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200805030455.123024-3-leobras.c@gmail.com |
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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.