-static bool __init early_alloc_p2m(unsigned long pfn, bool check_boundary)
-{
- unsigned topidx, mididx, idx;
- unsigned long *p2m;
-
- topidx = p2m_top_index(pfn);
- mididx = p2m_mid_index(pfn);
- idx = p2m_index(pfn);
-
- /* Pfff.. No boundary cross-over, lets get out. */
- if (!idx && check_boundary)
- return false;
-
- WARN(p2m_top[topidx][mididx] == p2m_identity,
- "P2M[%d][%d] == IDENTITY, should be MISSING (or alloced)!\n",
- topidx, mididx);
-
- /*
- * Could be done by xen_build_dynamic_phys_to_machine..
- */
- if (p2m_top[topidx][mididx] != p2m_missing)
- return false;
-
- /* Boundary cross-over for the edges: */
- p2m = alloc_p2m_page();
-
- p2m_init(p2m);
-
- p2m_top[topidx][mididx] = p2m;
-
- return true;
-}
-
-static bool __init early_alloc_p2m_middle(unsigned long pfn)
-{
- unsigned topidx = p2m_top_index(pfn);
- unsigned long **mid;
-
- mid = p2m_top[topidx];
- if (mid == p2m_mid_missing) {
- mid = alloc_p2m_page();
-
- p2m_mid_init(mid, p2m_missing);
-
- p2m_top[topidx] = mid;
- }
- return true;
-}
-
-static void __init early_split_p2m(unsigned long pfn)
-{
- unsigned long mididx, idx;
-
- mididx = p2m_mid_index(pfn);
- idx = p2m_index(pfn);
-
- /*
- * Allocate new middle and leaf pages if this pfn lies in the
- * middle of one.
- */
- if (mididx || idx)
- early_alloc_p2m_middle(pfn);
- if (idx)
- early_alloc_p2m(pfn, false);
-}
-