I'm not sure what's happened to the drm code in linux-next - it's exploding all over the place. Did someone turn on -Werror without doing anywhere near enough testing?
Anyway, I don't know how to fix this i386 build error:
drivers/gpu/drm/i915/i915_gem_gtt.c: In function 'gen8_ppgtt_init':
drivers/gpu/drm/i915/i915_gem_gtt.c:954:2: error: large integer implicitly
truncated to unsigned type [-Werror=overflow]
ppgtt->base.total = 1ULL << 32;
i915_address_space.total is a ulong: 32-bit.
