arch/riscv64/RISCV64VMTranslationMap.cpp

38 WriteVmPage(vm_page* page)
41 		(addr_t)(page->physical_page_number * B_PAGE_SIZE));
42 	switch (page->State()) {
69 	if (page->busy)
74 	if (page->busy_writing)
79 	if (page->accessed)
84 	if (page->modified)
89 	if (page->unused)
94 	dprintf(" usage:%3u", page->usage_count);
95 	dprintf(" wired:%5u", page->WiredCount());
98 	vm_page_mappings::Iterator iterator = page->mappings.GetIterator();
129 	vm_page* page = vm_lookup_page(ppn);
130 	DEBUG_PAGE_ACCESS_START(page);
131 	vm_page_set_state(page, PAGE_STATE_FREE);
170 		vm_page* page = vm_page_allocate_page(reservation,
172 		fPageTable = page->physical_page_number * B_PAGE_SIZE;
175 		DEBUG_PAGE_ACCESS_END(page);
198 			vm_page* page = vm_page_allocate_page(reservation,
200 			page_num_t ppn = page->physical_page_number;
203 			DEBUG_PAGE_ACCESS_END(page);
256 	// Can't delete currently used page table
326 		panic("can't allocate page table");
374 	for (addr_t page = start; page < end; page += B_PAGE_SIZE) {
375 		std::atomic<Pte>* pte = LookupPte(page, false, NULL);
380 				InvalidatePage(page);
472 			// get the page
473 			vm_page* page = vm_lookup_page(oldPte.ppn);
474 			ASSERT(page != NULL);
476 				WriteVmPage(page); dprintf("\n");
479 			DEBUG_PAGE_ACCESS_START(page);
481 			// transfer the accessed/dirty flags to the page
482 			page->accessed = oldPte.isAccessed;
483 			page->modified = oldPte.isDirty;
486 			// page
490 					= page->mappings.GetIterator();
499 				page->mappings.Remove(mapping);
502 				page->DecrementWiredCount();
504 			if (!page->IsMapped()) {
508 					if (page->Cache()->temporary)
509 						vm_page_set_state(page, PAGE_STATE_INACTIVE);
510 					else if (page->modified)
511 						vm_page_set_state(page, PAGE_STATE_MODIFIED);
513 						vm_page_set_state(page, PAGE_STATE_CACHED);
517 			DEBUG_PAGE_ACCESS_END(page);
524 	// TODO: As in UnmapPage() we can lose page dirty flags here. ATM it's not
566 		vm_page* page = mapping->page;
567 		page->mappings.Remove(mapping);
569 		VMCache* cache = page->Cache();
572 		if (!page->IsMapped()) {
579 				+ ((page->cache_offset * B_PAGE_SIZE)
584 				panic("page %p has mapping for area %p "
586 					"page table", page, area, address);
592 			// transfer the accessed/dirty flags to the page and
595 				page->accessed = true;
602 				page->modified = true;
605 				DEBUG_PAGE_ACCESS_START(page);
608 					vm_page_set_state(page,
610 				} else if (page->modified) {
611 					vm_page_set_state(page,
614 					vm_page_set_state(page,
618 				DEBUG_PAGE_ACCESS_END(page);
700 	for (addr_t page = base; page < top; page += B_PAGE_SIZE) {
702 		std::atomic<Pte>* pte = LookupPte(page, false, NULL);
704 			TRACE("attempt to protect not mapped page: 0x%"
705 				B_PRIxADDR "\n", page);
734 			InvalidatePage(page);
1005 				", calling page fault handler\n", va0);
1046 				", calling page fault handler\n", va0);