4c5b566c21
saved_max_pfn was originally introduced in commit
92aa63a5a1bf ("[PATCH] kdump: Retrieve saved max pfn")
It used to make sure that the user does not try to read the physical memory
beyond saved_max_pfn. But since commit
921d58c0e699 ("vmcore: remove saved_max_pfn check")
it's no longer used for the check. This variable doesn't have any users
anymore so just remove it.
[ bp: Drop the Calgary IOMMU reference from the commit message. ]
Signed-off-by: Kairui Song <kasong@redhat.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Link: https://lkml.kernel.org/r/20200330181544.1595733-1-kasong@redhat.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.