+static uint64_t
+radv_amdgpu_get_optimal_vm_alignment(struct radv_amdgpu_winsys *ws,
+ uint64_t size, unsigned alignment)
+{
+ uint64_t vm_alignment = alignment;
+
+ /* Increase the VM alignment for faster address translation. */
+ if (size >= ws->info.pte_fragment_size)
+ vm_alignment = MAX2(vm_alignment, ws->info.pte_fragment_size);
+
+ /* Gfx9: Increase the VM alignment to the most significant bit set
+ * in the size for faster address translation.
+ */
+ if (ws->info.chip_class >= GFX9) {
+ unsigned msb = util_last_bit64(size); /* 0 = no bit is set */
+ uint64_t msb_alignment = msb ? 1ull << (msb - 1) : 0;
+
+ vm_alignment = MAX2(vm_alignment, msb_alignment);
+ }
+ return vm_alignment;
+}
+