Re: [Intel-gfx] [PATCH v2 2/3] drm/i915: noop forcewake get/put when vgpu activated

On Wed, Jan 25, 2017 at 09:44:51PM +0800, Weinan Li wrote: > Host maintian the hardware's forcewake state, guest don't need and also > can't control it. Although vgpu_read/write bypass forcewake_get/put in MMIO > read/write, but still have separate path called by > "intel_uncore_forcewake_get/put"

[Intel-gfx] [PATCH v2 2/3] drm/i915: noop forcewake get/put when vgpu activated

Host maintian the hardware's forcewake state, guest don't need and also can't control it. Although vgpu_read/write bypass forcewake_get/put in MMIO read/write, but still have separate path called by "intel_uncore_forcewake_get/put" and "intel_uncore_forcewake_get/put__locked". Unnecessary MMIO