279 	 * [__sha(0), __sha(memsize)]	- shadow memory for identity mapping  in kasan_early_init()
289 	/* init kasan zero shadow */  in kasan_early_init()
319 	 * +- 0 -------------+	   +- shadow start -+  in kasan_early_init()
325 	 * +- shadow start --+	   |	zero	    |  in kasan_early_init()
327 	 * +- shadow end    -+	   |	mapping	    |  in kasan_early_init()
333 	 * +-----------------+	   +- shadow end ---+  in kasan_early_init()
336 	 * +- 0 -------------+	   +- shadow start -+  in kasan_early_init()
342 	 * +- shadow start --+	   |	page	    |  in kasan_early_init()
344 	 * +- shadow end    -+	   |  (untracked)   |  in kasan_early_init()
350 	 * +-----------------+	   +- shadow end ---+  in kasan_early_init()
352 	/* populate kasan shadow (for identity mapping and zero page mapping) */  in kasan_early_init()
355 		/* shallowly populate kasan shadow for vmalloc and modules */  in kasan_early_init()
359 	/* populate kasan shadow for untracked memory */  in kasan_early_init()
384 	 * Carry over shadow memory region from early_pg_dir to swapper_pg_dir.  in kasan_copy_shadow_mapping()