[PATCH 22/22] drm/i915: Enable platform support for vGPU huge gtt pages

[Zhenyu Wang]

On 2017.12.20 15:48:35 +0800, changbin.du at intel.com wrote:
> From: Changbin Du <changbin.du at intel.com>
> 
> Now GVTg supports shadowing both 2M/64K huge gtt pages. So this is to
> remove the restriction on guest side.
> 
> Signed-off-by: Changbin Du <changbin.du at intel.com>
> ---
>  drivers/gpu/drm/i915/i915_gem.c | 9 ---------
>  1 file changed, 9 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
> index dca15c1..727df2f 100644
> --- a/drivers/gpu/drm/i915/i915_gem.c
> +++ b/drivers/gpu/drm/i915/i915_gem.c
> @@ -5159,15 +5159,6 @@ int i915_gem_init(struct drm_i915_private *dev_priv)
>  {
>  	int ret;
>  
> -	/*
> -	 * We need to fallback to 4K pages since gvt gtt handling doesn't
> -	 * support huge page entries - we will need to check either hypervisor
> -	 * mm can support huge guest page or just do emulation in gvt.
> -	 */
> -	if (intel_vgpu_active(dev_priv))
> -		mkwrite_device_info(dev_priv)->page_sizes =
> -			I915_GTT_PAGE_SIZE_4K;
> -

For i915 guest, can't simply remove this, but require new pvinfo
capability bit for compatibility check.

>  	dev_priv->mm.unordered_timeline = dma_fence_context_alloc(1);
>  
>  	if (HAS_LOGICAL_RING_CONTEXTS(dev_priv)) {
> -- 
> 2.7.4
> 
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-- 
Open Source Technology Center, Intel ltd.

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