23  * mshv_region_process_chunk - Processes a contiguous chunk of memory pages
27  * @page_offset: Offset into the region's pages array to start processing.
28  * @page_count : Number of pages to process.
31  * This function scans the region's pages starting from @page_offset,
32  * checking for contiguous present pages of the same size (normal or huge).
33  * It invokes @handler for the chunk of contiguous pages found. Returns the
34  * number of pages handled, or a negative error code if the first page is
38  * pages.
40  * Return: Number of pages handled, or negative error code.
55 	page = region->pages[page_offset];  in mshv_region_process_chunk()
68 		page = region->pages[page_offset + count];  in mshv_region_process_chunk()
87  * mshv_region_process_range - Processes a range of memory pages in a
91  * @page_offset: Offset into the region's pages array to start processing.
92  * @page_count : Number of pages to process.
94  *               pages.
96  * Iterates over the specified range of pages in @region, skipping
97  * non-present pages. For each contiguous chunk of present pages, invokes
101  * pages.
119 		/* Skip non-present pages */  in mshv_region_process_range()
120 		if (!region->pages[page_offset]) {  in mshv_region_process_range()
167 	struct page *page = region->pages[page_offset];  in mshv_region_chunk_share()
173 					      region->pages + page_offset,  in mshv_region_chunk_share()
193 	struct page *page = region->pages[page_offset];  in mshv_region_chunk_unshare()
199 					      region->pages + page_offset,  in mshv_region_chunk_unshare()
217 	struct page *page = region->pages[page_offset];  in mshv_region_chunk_remap()
225 				     region->pages + page_offset);  in mshv_region_chunk_remap()
249 		unpin_user_pages(region->pages + page_offset, page_count);  in mshv_region_invalidate_pages()
251 	memset(region->pages + page_offset, 0,  in mshv_region_invalidate_pages()
263 	struct page **pages;  in mshv_region_pin()  local
268 		pages = region->pages + done_count;  in mshv_region_pin()
275 		 * Pinning assuming 4k pages works for large pages too.  in mshv_region_pin()
284 					  pages);  in mshv_region_pin()
300 	struct page *page = region->pages[page_offset];  in mshv_region_chunk_unmap()
331 …"Failed to regain access to memory, unpinning user pages will fail and crash the host error: %d\n",  in mshv_region_destroy()
398  * @page_count: Number of pages to handle.
400  * This function resolves memory faults for a specified range of pages
402  * to fault in the required pages and updates the region's page array.
433 		region->pages[page_offset + i] = hmm_pfn_to_page(pfns[i]);  in mshv_region_range_fault()
453 	/* Map more pages than requested to reduce the number of faults. */  in mshv_region_handle_gfn_fault()
474  * This function invalidates a memory region by remapping its pages with
480  * NOTE: Failure to invalidate a region is a serious error, as the pages will
482  * Any attempt to access such pages will likely crash the system.
524 …"Failed to invalidate region %#llx-%#llx (range %#lx-%#lx, event: %u, pages %#llx-%#llx, mm: %#llx…  in mshv_region_interval_invalidate()