#endif /* !CONFIG_PM_AUTOSLEEP */
-#ifdef CONFIG_ARCH_SAVE_PAGE_KEYS
-/*
- * The ARCH_SAVE_PAGE_KEYS functions can be used by an architecture
- * to save/restore additional information to/from the array of page
- * frame numbers in the hibernation image. For s390 this is used to
- * save and restore the storage key for each page that is included
- * in the hibernation image.
- */
-unsigned long page_key_additional_pages(unsigned long pages);
-int page_key_alloc(unsigned long pages);
-void page_key_free(void);
-void page_key_read(unsigned long *pfn);
-void page_key_memorize(unsigned long *pfn);
-void page_key_write(void *address);
-
-#else /* !CONFIG_ARCH_SAVE_PAGE_KEYS */
-
-static inline unsigned long page_key_additional_pages(unsigned long pages)
-{
- return 0;
-}
-
-static inline int page_key_alloc(unsigned long pages)
-{
- return 0;
-}
-
-static inline void page_key_free(void) {}
-static inline void page_key_read(unsigned long *pfn) {}
-static inline void page_key_memorize(unsigned long *pfn) {}
-static inline void page_key_write(void *address) {}
-
-#endif /* !CONFIG_ARCH_SAVE_PAGE_KEYS */
-
#endif /* _LINUX_SUSPEND_H */
count += highmem;
count -= totalreserve_pages;
- /* Add number of pages required for page keys (s390 only). */
- size += page_key_additional_pages(saveable);
-
/* Compute the maximum number of saveable pages to leave in memory. */
max_size = (count - (size + PAGES_FOR_IO)) / 2
- 2 * DIV_ROUND_UP(reserved_size, PAGE_SIZE);
buf[j] = memory_bm_next_pfn(bm);
if (unlikely(buf[j] == BM_END_OF_MAP))
break;
- /* Save page key for data page (s390 only). */
- page_key_read(buf + j);
}
}
if (unlikely(buf[j] == BM_END_OF_MAP))
break;
- /* Extract and buffer page key for data page (s390 only). */
- page_key_memorize(buf + j);
-
if (pfn_valid(buf[j]) && memory_bm_pfn_present(bm, buf[j]))
memory_bm_set_bit(bm, buf[j]);
else
if (error)
return error;
- /* Allocate buffer for page keys. */
- error = page_key_alloc(nr_copy_pages);
- if (error)
- return error;
-
hibernate_restore_protection_begin();
} else if (handle->cur <= nr_meta_pages + 1) {
error = unpack_orig_pfns(buffer, ©_bm);
}
} else {
copy_last_highmem_page();
- /* Restore page key for data page (s390 only). */
- page_key_write(handle->buffer);
hibernate_restore_protect_page(handle->buffer);
handle->buffer = get_buffer(&orig_bm, &ca);
if (IS_ERR(handle->buffer))
void snapshot_write_finalize(struct snapshot_handle *handle)
{
copy_last_highmem_page();
- /* Restore page key for data page (s390 only). */
- page_key_write(handle->buffer);
- page_key_free();
hibernate_restore_protect_page(handle->buffer);
/* Do that only if we have loaded the image entirely */
if (handle->cur > 1 && handle->cur > nr_meta_pages + nr_copy_pages) {