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Bspec claims that HWSTAM is only 16 bits on gen3, but the other interrupts registers are 32 bits and there are 18 valid interrupt bits. Hence a 16 bit HWSTAM wouldn't be able to contain all the bits, so it seems the spec is incorrect about the size of the register. And indeed I can clear bits 16 and 17 just fine with a 32 bit write. So let's adjust the code to treat the register as 32 bits. Acked-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170818183705.27850-14-ville.syrjala@linux.intel.com
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.