681818fdb9
The hardware prefetches several cachelines of data from batchbuffers before they are parsed. This prefetching only stops when the parser encounters an MI_BATCH_BUFFER_END instruction (or a nested MI_BATCH_BUFFER_START), so we must ensure that there is enough padding at the end of the batchbuffer to prevent the prefetcher from running past the end of the allocation and potentially faulting. Bspec: 45717 Link: https://lore.kernel.org/r/20230329173334.4015124-2-matthew.d.roper@intel.com Signed-off-by: Matt Roper <matthew.d.roper@intel.com> Reviewed-by: José Roberto de Souza <jose.souza@intel.com> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@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.