[Intel-gfx] [PATCH] drm/i915/fbc: Limit cfb to the first 256MiB of stolen on g4x+

[kernel test robot]

Hi Ville,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on drm-intel/for-linux-next]
[also build test WARNING on drm-tip/drm-tip v5.8-rc5 next-20200714]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use  as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Ville-Syrjala/drm-i915-fbc-Limit-cfb-to-the-first-256MiB-of-stolen-on-g4x/20200715-025227
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: i386-allyesconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-14) 9.3.0
reproduce (this is a W=1 build):
        # save the attached .config to linux build tree
        make W=1 ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp at intel.com>

All warnings (new ones prefixed by >>):

   In file included from include/linux/bits.h:6,
                    from include/linux/bitops.h:5,
                    from include/linux/kernel.h:12,
                    from include/asm-generic/bug.h:19,
                    from arch/x86/include/asm/bug.h:86,
                    from include/linux/bug.h:5,
                    from include/linux/mmdebug.h:5,
                    from include/linux/gfp.h:5,
                    from include/linux/slab.h:15,
                    from include/linux/io-mapping.h:10,
                    from drivers/gpu/drm/i915/i915_drv.h:36,
                    from drivers/gpu/drm/i915/display/intel_fbc.c:43:
   drivers/gpu/drm/i915/display/intel_fbc.c: In function 'intel_fbc_cfb_base_max':
>> include/vdso/bits.h:7:26: warning: left shift count >= width of type [-Wshift-count-overflow]
       7 | #define BIT(nr)   (UL(1) << (nr))
         |                          ^~
   drivers/gpu/drm/i915/display/intel_fbc.c:432:10: note: in expansion of macro 'BIT'
     432 |   return BIT(32);
         |          ^~~

vim +7 include/vdso/bits.h

3945ff37d2f48d Vincenzo Frascino 2020-03-20  6  
3945ff37d2f48d Vincenzo Frascino 2020-03-20 @7  #define BIT(nr)			(UL(1) << (nr))
3945ff37d2f48d Vincenzo Frascino 2020-03-20  8  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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