Re: [Intel-gfx] [PATCH v4 3/5] drm/i915: Introduce guard pages to i915_vma

On 01/12/2022 10:45, Andi Shyti wrote: Hi Tvrtko, [...] @@ -768,8 +773,17 @@ i915_vma_insert(struct i915_vma *vma, struct i915_gem_ww_ctx *ww, GEM_BUG_ON(!IS_ALIGNED(alignment, I915_GTT_MIN_ALIGNMENT)); GEM_BUG_ON(!is_power_of_2(alignment)); + guard = vma->guard; /*

Re: [Intel-gfx] [PATCH v4 3/5] drm/i915: Introduce guard pages to i915_vma

Hi Tvrtko, [...] > > @@ -768,8 +773,17 @@ i915_vma_insert(struct i915_vma *vma, struct > > i915_gem_ww_ctx *ww, > > GEM_BUG_ON(!IS_ALIGNED(alignment, I915_GTT_MIN_ALIGNMENT)); > > GEM_BUG_ON(!is_power_of_2(alignment)); > > + guard = vma->guard; /* retain guard across rebinds */ > > +

Re: [Intel-gfx] [PATCH v4 3/5] drm/i915: Introduce guard pages to i915_vma

On 30/11/2022 23:58, Andi Shyti wrote: From: Chris Wilson Introduce the concept of padding the i915_vma with guard pages before and after. The major consequence is that all ordinary uses of i915_vma must use i915_vma_offset/i915_vma_size and not i915_vma.node.start/size directly, as the