5 * Allocate a 8 Mb temporary mapping area for copy_user_page/clear_user_page.
6 * This area needs to be aligned on a 8 Mb boundary.
10 * For PA-RISC, this has no meaning. It is starting to be used on x86
11 * for vsyscalls. PA will probably do this using space registers.
14 /* This TMPALIAS_MAP_START reserves some of the memory where the
15 * FIXMAP region is on x86. It's only real use is to constrain
16 * VMALLOC_END (see pktable.h) */
17 #define TMPALIAS_MAP_START (__PAGE_OFFSET - 0x01000000)