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CXL devices may report a maximum number of addresses that a device allows to be poisoned using poison injection. When cxl_test creates mock CXL memory devices, it defaults to MOCK_INJECT_DEV_MAX==88 for all mocked memdevs. Add a sysfs attribute, poison_inject_max to module cxl_mock_mem so that users can set a custom device injection limit. Fail, and return -EBUSY, if the mock poison list is not empty. /sys/bus/platform/drivers/cxl_mock_mem/poison_inject_max A simple usage model is to set the attribute before running a test in order to emulate a device's poison handling. Signed-off-by: Alison Schofield <alison.schofield@intel.com> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/0f25b2862b90013545450222d2199e435c6cc11a.1681874357.git.alison.schofield@intel.com Signed-off-by: Dan Williams <dan.j.williams@intel.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.