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Bit[0] of BAR is always zero. Bit[2:1] and bit[3] of BAR contain the information of 'type' and the 'prefetchable' accordingly. Therefore, mask the lower four bits to retrieve the actual base address of a BAR. Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com> Cc: Tony Luck <tony.luck@intel.com> Cc: linux-edac <linux-edac@vger.kernel.org> Link: http://lkml.kernel.org/r/20170814154813.21619-1-qiuxu.zhuo@intel.com Signed-off-by: Borislav Petkov <bp@suse.de>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.