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3592a86a2b
Device capacity intended for use as system ram should be aligned to the architecture-defined memory block size or that capacity will be silently truncated and capacity stranded. As hotplug dax memory becomes more prevelant, the memory block size alignment becomes more important for platform and device vendors to pay attention to - so this truncation should not be silent. This issue is particularly relevant for CXL Dynamic Capacity devices, whose capacity may arrive in spec-aligned but block-misaligned chunks. Link: https://lkml.kernel.org/r/20250410142831.217887-1-gourry@gourry.net Suggested-by: David Hildenbrand <david@redhat.com> Suggested-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Tested-by: Alison Schofield <alison.schofield@intel.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: David Hildenbrand <david@redhat.com> Signed-off-by: Gregory Price <gourry@gourry.net> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Vishal Verma <vishal.l.verma@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.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.