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21c62a9d16
Clean up some cases where we're dealing with GTT pages instead of system pages to use I915_GTT_PAGE_SIZE instead of PAGE_SHIT. So just replace the the shifts with mul/div as appropriate. These are the easy ones, the rest probably need some actual thought. No real changes in the generated asm. Only gen8_ppgtt_insert_4lvl() was affected as gcc decided to do the following change: - be9: 89 d9 mov %ebx,%ecx - beb: c1 e1 0c shl $0xc,%ecx - bee: 48 63 c9 movslq %ecx,%rcx + be9: 48 63 cb movslq %ebx,%rcx + bec: 48 c1 e1 0c shl $0xc,%rcx and that then shifted a bunch of the offset by one byte. I presume the sign extensions in the asm are due to integer promotions from u16 etc. Hopefully someone has confirmed that those don't end up doing the wrong thing for us. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180917171414.19220-1-ville.syrjala@linux.intel.com Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> |
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| include | ||
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| .clang-format | ||
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| README | ||
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.
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.