On 2017.09.22 18:32:50 +0100, Matthew Auld wrote:
> Currently gvt gtt handling doesn't support huge page entries, so disable
> for now.
>
> v2: remove useless 48b PPGTT check
>
> Suggested-by: Zhenyu Wang <zhenyuw@xxxxxxxxxxxxxxx>
> Signed-off-by: Matthew Auld <matthew.auld@xxxxxxxxx>
> Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
> Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> Cc: Zhenyu Wang <zhenyuw@xxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_gem.c | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
> index 750c04002304..f98d8a08167b 100644
> --- a/drivers/gpu/drm/i915/i915_gem.c
> +++ b/drivers/gpu/drm/i915/i915_gem.c
> @@ -4831,6 +4831,14 @@ int i915_gem_init(struct drm_i915_private *dev_priv)
>
> mutex_lock(&dev_priv->drm.struct_mutex);
>
> + /* 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;
> +
> dev_priv->mm.unordered_timeline = dma_fence_context_alloc(1);
>
> if (!i915_modparams.enable_execlists) {
> --
> 2.13.5
>
Reviewed-by: Zhenyu Wang <zhenyuw@xxxxxxxxxxxxxxx>
thanks
--
Open Source Technology Center, Intel ltd.
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