Re: [PATCH 17/22] drm/i915: set num_fence_regs to 0 if there is no aperture

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Quoting Matthew Auld (2019-09-27 18:34:04)
> From: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
> 
> We can't fence anything without aperture.
> 
> Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
> Signed-off-by: Stuart Summers <stuart.summers@xxxxxxxxx>
> Cc: Matthew Auld <matthew.auld@xxxxxxxxx>
> ---
>  drivers/gpu/drm/i915/i915_gem_fence_reg.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_gem_fence_reg.c b/drivers/gpu/drm/i915/i915_gem_fence_reg.c
> index 615a9f4ef30c..e15e4e247576 100644
> --- a/drivers/gpu/drm/i915/i915_gem_fence_reg.c
> +++ b/drivers/gpu/drm/i915/i915_gem_fence_reg.c
> @@ -828,8 +828,10 @@ void i915_ggtt_init_fences(struct i915_ggtt *ggtt)
>  
>         detect_bit_6_swizzle(i915);
>  
> -       if (INTEL_GEN(i915) >= 7 &&
> -           !(IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915)))
> +       if (!HAS_MAPPABLE_APERTURE(i915))

You have the actual i915_ggtt!
-Chris
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