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CXL devices maintain a list of locations that are poisoned or result in poison if the addresses are accessed by the host. Per the spec, (CXL 3.0 8.2.9.8.4.1), the device returns this Poison list as a set of Media Error Records that include the source of the error, the starting device physical address, and length. The length is the number of adjacent DPAs in the record and is in units of 64 bytes. Retrieve the poison list. Signed-off-by: Alison Schofield <alison.schofield@intel.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Link: https://lore.kernel.org/r/a1f332e817834ef8e89c0ff32e760308fb903346.1681838291.git.alison.schofield@intel.com Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Dan Williams <dan.j.williams@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.