Lines Matching refs:pfn
127 static inline unsigned p2m_top_index(unsigned long pfn) in p2m_top_index() argument
129 BUG_ON(pfn >= MAX_P2M_PFN); in p2m_top_index()
130 return pfn / (P2M_MID_PER_PAGE * P2M_PER_PAGE); in p2m_top_index()
133 static inline unsigned p2m_mid_index(unsigned long pfn) in p2m_mid_index() argument
135 return (pfn / P2M_PER_PAGE) % P2M_MID_PER_PAGE; in p2m_mid_index()
170 static void p2m_init_identity(unsigned long *p2m, unsigned long pfn) in p2m_init_identity() argument
175 p2m[i] = IDENTITY_FRAME(pfn + i); in p2m_init_identity()
215 unsigned long pfn, mfn; in xen_build_mfn_list_list() local
238 for (pfn = 0; pfn < xen_max_p2m_pfn && pfn < MAX_P2M_PFN; in xen_build_mfn_list_list()
239 pfn += P2M_PER_PAGE) { in xen_build_mfn_list_list()
240 topidx = p2m_top_index(pfn); in xen_build_mfn_list_list()
241 mididx = p2m_mid_index(pfn); in xen_build_mfn_list_list()
244 ptep = lookup_address((unsigned long)(xen_p2m_addr + pfn), in xen_build_mfn_list_list()
258 pfn += (P2M_MID_PER_PAGE - 1) * P2M_PER_PAGE; in xen_build_mfn_list_list()
293 unsigned long pfn; in xen_build_dynamic_phys_to_machine() local
298 for (pfn = xen_start_info->nr_pages; pfn < xen_p2m_size; pfn++) in xen_build_dynamic_phys_to_machine()
299 xen_p2m_addr[pfn] = INVALID_P2M_ENTRY; in xen_build_dynamic_phys_to_machine()
309 static int xen_p2m_elem_type(unsigned long pfn) in xen_p2m_elem_type() argument
313 if (pfn >= xen_p2m_size) in xen_p2m_elem_type()
316 mfn = xen_p2m_addr[pfn]; in xen_p2m_elem_type()
330 unsigned long pfn; in xen_rebuild_p2m_list() local
352 for (pfn = 0; pfn < xen_max_p2m_pfn; pfn += chunk) { in xen_rebuild_p2m_list()
363 chunk = (pfn & (P2M_PER_PAGE * P2M_MID_PER_PAGE - 1)) ? in xen_rebuild_p2m_list()
366 type = xen_p2m_elem_type(pfn); in xen_rebuild_p2m_list()
370 if (xen_p2m_elem_type(pfn + i) != type) in xen_rebuild_p2m_list()
379 copy_page(mfns, xen_p2m_addr + pfn); in xen_rebuild_p2m_list()
380 ptep = populate_extra_pte((unsigned long)(p2m + pfn)); in xen_rebuild_p2m_list()
390 ptep = populate_extra_pte((unsigned long)(p2m + pfn)); in xen_rebuild_p2m_list()
401 (unsigned long)(p2m + pfn) + i * PMD_SIZE); in xen_rebuild_p2m_list()
431 unsigned long get_phys_to_machine(unsigned long pfn) in get_phys_to_machine() argument
436 if (unlikely(pfn >= xen_p2m_size)) { in get_phys_to_machine()
437 if (pfn < xen_max_p2m_pfn) in get_phys_to_machine()
438 return xen_chk_extra_mem(pfn); in get_phys_to_machine()
440 return IDENTITY_FRAME(pfn); in get_phys_to_machine()
443 ptep = lookup_address((unsigned long)(xen_p2m_addr + pfn), &level); in get_phys_to_machine()
452 return IDENTITY_FRAME(pfn); in get_phys_to_machine()
454 return xen_p2m_addr[pfn]; in get_phys_to_machine()
527 int xen_alloc_p2m_entry(unsigned long pfn) in xen_alloc_p2m_entry() argument
534 unsigned long addr = (unsigned long)(xen_p2m_addr + pfn); in xen_alloc_p2m_entry()
548 if (p2m_top_mfn && pfn < MAX_P2M_PFN) { in xen_alloc_p2m_entry()
549 topidx = p2m_top_index(pfn); in xen_alloc_p2m_entry()
593 p2m_init_identity(p2m, pfn & ~(P2M_PER_PAGE - 1)); in xen_alloc_p2m_entry()
605 mid_mfn[p2m_mid_index(pfn)] = virt_to_mfn(p2m); in xen_alloc_p2m_entry()
616 if (pfn >= xen_p2m_last_pfn) { in xen_alloc_p2m_entry()
617 xen_p2m_last_pfn = ALIGN(pfn + 1, P2M_PER_PAGE); in xen_alloc_p2m_entry()
628 unsigned long pfn; in set_phys_range_identity() local
639 for (pfn = pfn_s; pfn < pfn_e; pfn++) in set_phys_range_identity()
640 xen_p2m_addr[pfn] = IDENTITY_FRAME(pfn); in set_phys_range_identity()
642 return pfn - pfn_s; in set_phys_range_identity()
645 bool __set_phys_to_machine(unsigned long pfn, unsigned long mfn) in __set_phys_to_machine() argument
651 if (unlikely(pfn >= xen_p2m_size)) in __set_phys_to_machine()
658 if (likely(!xen_safe_write_ulong(xen_p2m_addr + pfn, mfn))) in __set_phys_to_machine()
661 ptep = lookup_address((unsigned long)(xen_p2m_addr + pfn), &level); in __set_phys_to_machine()
668 return mfn == IDENTITY_FRAME(pfn); in __set_phys_to_machine()
673 bool set_phys_to_machine(unsigned long pfn, unsigned long mfn) in set_phys_to_machine() argument
675 if (unlikely(!__set_phys_to_machine(pfn, mfn))) { in set_phys_to_machine()
678 ret = xen_alloc_p2m_entry(pfn); in set_phys_to_machine()
682 return __set_phys_to_machine(pfn, mfn); in set_phys_to_machine()
706 unsigned long mfn, pfn; in set_foreign_p2m_mapping() local
722 pfn = page_to_pfn(pages[i]); in set_foreign_p2m_mapping()
724 WARN(pfn_to_mfn(pfn) != INVALID_P2M_ENTRY, "page must be ballooned"); in set_foreign_p2m_mapping()
726 if (likely(set_phys_to_machine(pfn, FOREIGN_FRAME(mfn)))) in set_foreign_p2m_mapping()
783 unsigned long pfn = page_to_pfn(pages[i]); in clear_foreign_p2m_mapping() local
786 set_phys_to_machine(pfn, INVALID_P2M_ENTRY); in clear_foreign_p2m_mapping()
816 unsigned long pfn, mfn, end_pfn; in xen_do_remap_nonram() local
820 pfn = PFN_DOWN(remap->paddr); in xen_do_remap_nonram()
822 while (pfn < end_pfn) { in xen_do_remap_nonram()
823 if (!set_phys_to_machine(pfn, mfn)) in xen_do_remap_nonram()
825 pfn, mfn); in xen_do_remap_nonram()
827 pfn++; in xen_do_remap_nonram()
902 unsigned long pfn, first_pfn; in p2m_dump_show() local
908 for (pfn = 0; pfn < xen_p2m_size; pfn++) { in p2m_dump_show()
909 type = xen_p2m_elem_type(pfn); in p2m_dump_show()
911 seq_printf(m, " [0x%lx->0x%lx] %s\n", first_pfn, pfn, in p2m_dump_show()
914 first_pfn = pfn; in p2m_dump_show()
917 seq_printf(m, " [0x%lx->0x%lx] %s\n", first_pfn, pfn, in p2m_dump_show()