50  * helper functions in its asm/highmem.h to control cache color of virtual
56  * Determine color of virtual address where the page should be mapped.
189 		 * its virtual address (and hence PTE) without first  in flush_all_zero_pkmaps()
271  * Returns the page's virtual memory address.
280 	 * For highmem pages, we can't trust "virtual" until  in kmap_high()
300  * Returns the page's current virtual memory address, or NULL if no mapping
379  * Describes one page->virtual association
383 	void *virtual;  member
403  * page_address - get the mapped virtual address of a page
404  * @page: &struct page to get the virtual address of
406  * Returns the page's virtual address.
425 				ret = pam->virtual;  in page_address()
438  * set_page_address - set a page's virtual address
440  * @virtual: virtual address to use
442 void set_page_address(struct page *page, void *virtual)  in set_page_address()  argument
451 	if (virtual) {		/* Add */  in set_page_address()
452 		pam = &page_address_maps[PKMAP_NR((unsigned long)virtual)];  in set_page_address()
454 		pam->virtual = virtual;  in set_page_address()