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Yishai Hadas
e1bed9a94d
As part of this enhancement, allow the creation of an MKEY associated with a DMA handle. Additional notes: MKEYs with TPH (i.e. TLP Processing Hints) attributes are currently not UMR-capable unless explicitly enabled by firmware or hardware. Therefore, to maintain such MKEYs in the MR cache, the TPH fields have been added to the rb_key structure, with a dedicated hash bucket. The ability to bypass the kernel verbs flow and create an MKEY with TPH attributes using DEVX has been restricted. TPH must follow the standard InfiniBand flow, where a DMAH is created with the appropriate security checks and management mechanisms in place. DMA handles are currently not supported in conjunction with On-Demand Paging (ODP). Re-registration of memory regions originally created with TPH attributes is currently not supported. Signed-off-by: Yishai Hadas <yishaih@nvidia.com> Reviewed-by: Edward Srouji <edwards@nvidia.com> Link: https://patch.msgid.link/1c485651cf8417694ddebb80446c5093d5a791a9.1752752567.git.leon@kernel.org Signed-off-by: Leon Romanovsky <leon@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 reStructuredText 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.