drm/i915: Remove unnecessary gen8_clamp_pd
gen8_clamp_pd clamps to the next page directory boundary, but the macro gen8_for_each_pde already has a check to stop at the page directory boundary. Furthermore, i915_pte_count also restricts to the next page table boundary. v2: Rebase after Mika's ppgtt cleanup / scratch merge patch series. Suggested-by: Akash Goel <akash.goel@intel.com> Signed-off-by: Michel Thierry <michel.thierry@intel.com> Reviewed-by: "Akash Goel" <akash.goel@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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@ -955,7 +955,7 @@ static int gen8_alloc_va_range(struct i915_address_space *vm,
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gen8_for_each_pdpe(pd, &ppgtt->pdp, start, length, temp, pdpe) {
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gen8_pde_t *const page_directory = kmap_px(pd);
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struct i915_page_table *pt;
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uint64_t pd_len = gen8_clamp_pd(start, length);
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uint64_t pd_len = length;
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uint64_t pd_start = start;
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uint32_t pde;
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@ -444,17 +444,6 @@ static inline uint32_t gen6_pde_index(uint32_t addr)
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temp = min(temp, length), \
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start += temp, length -= temp)
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/* Clamp length to the next page_directory boundary */
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static inline uint64_t gen8_clamp_pd(uint64_t start, uint64_t length)
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{
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uint64_t next_pd = ALIGN(start + 1, 1 << GEN8_PDPE_SHIFT);
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if (next_pd > (start + length))
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return length;
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return next_pd - start;
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}
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static inline uint32_t gen8_pte_index(uint64_t address)
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{
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return i915_pte_index(address, GEN8_PDE_SHIFT);
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