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Some instructions requires canonical address like MI_BATCH_BUFFER_START(UMDs must call xe_exec with a canonical address for Xe2+). So here adding functions to convert regular address to canonical address and back, the first user of this functions will be added in the next patch. v3: - inline removed - rename highest_address_bit_get() to ppgtt_msb_get() v4: - use xe->info.va_bits instead of xe->info.dma_mask_size BSpec: 47626 Cc: Matt Roper <matthew.d.roper@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Maarten Lankhorst <dev@lankhorst.se> Cc: Stuart Summers <stuart.summers@intel.com> Cc: Jani Nikula <jani.nikula@intel.com> Signed-off-by: José Roberto de Souza <jose.souza@intel.com> Reviewed-by: Matt Roper <matthew.d.roper@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240130135648.30211-1-jose.souza@intel.com
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.