On 10/11/2018 05:12 PM, Chris Wilson wrote: > Quoting Xiaolin Zhang (2018-10-11 07:14:05) >> It is performance optimization to reduce mmio trap numbers from 4 to >> 1 durning ELSP porting writing (context submission). >> >> When context subission, to cache elsp_data[4] values in >> the shared page, the last elsp_data[0] port writing will be trapped >> to gvt for real context submission. >> >> Use PVMMIO_ELSP_SUBMIT to control this level of pvmmio optimization. >> >> v1: rebase >> v0: RFC >> >> Signed-off-by: Xiaolin Zhang <xiaolin.zhang@xxxxxxxxx> >> --- >> drivers/gpu/drm/i915/i915_vgpu.c | 2 ++ >> drivers/gpu/drm/i915/intel_lrc.c | 37 ++++++++++++++++++++++++++++++++++++- > Hint: intel_vgpu_submission.c and go wild. You do not need to emulate > execlists at all, an async interface along the lines of guc would > strangely enough be more akin to what you want. > -Chris > can't understand your comment very well. so far, vgpu only support execlist workload submission only, this pv optimization is only valid for execlist submission and can't support guc. BRs, Xiaolin _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
