init_64.c (cdbfc557c43ea1f1f9b7062300ecb1254969814b) init_64.c (1f067167a83d1c7f80437fd1d32b55508aaca009)
1/*
2 * linux/arch/x86_64/mm/init.c
3 *
4 * Copyright (C) 1995 Linus Torvalds
5 * Copyright (C) 2000 Pavel Machek <pavel@suse.cz>
6 * Copyright (C) 2002,2003 Andi Kleen <ak@suse.de>
7 */
8

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512static void __init init_gbpages(void)
513{
514 if (direct_gbpages && cpu_has_gbpages)
515 printk(KERN_INFO "Using GB pages for direct mapping\n");
516 else
517 direct_gbpages = 0;
518}
519
1/*
2 * linux/arch/x86_64/mm/init.c
3 *
4 * Copyright (C) 1995 Linus Torvalds
5 * Copyright (C) 2000 Pavel Machek <pavel@suse.cz>
6 * Copyright (C) 2002,2003 Andi Kleen <ak@suse.de>
7 */
8

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512static void __init init_gbpages(void)
513{
514 if (direct_gbpages && cpu_has_gbpages)
515 printk(KERN_INFO "Using GB pages for direct mapping\n");
516 else
517 direct_gbpages = 0;
518}
519
520#ifdef CONFIG_MEMTEST
521
522static void __init memtest(unsigned long start_phys, unsigned long size,
523 unsigned pattern)
524{
525 unsigned long i;
526 unsigned long *start;
527 unsigned long start_bad;
528 unsigned long last_bad;
529 unsigned long val;
530 unsigned long start_phys_aligned;
531 unsigned long count;
532 unsigned long incr;
533
534 switch (pattern) {
535 case 0:
536 val = 0UL;
537 break;
538 case 1:
539 val = -1UL;
540 break;
541 case 2:
542 val = 0x5555555555555555UL;
543 break;
544 case 3:
545 val = 0xaaaaaaaaaaaaaaaaUL;
546 break;
547 default:
548 return;
549 }
550
551 incr = sizeof(unsigned long);
552 start_phys_aligned = ALIGN(start_phys, incr);
553 count = (size - (start_phys_aligned - start_phys))/incr;
554 start = __va(start_phys_aligned);
555 start_bad = 0;
556 last_bad = 0;
557
558 for (i = 0; i < count; i++)
559 start[i] = val;
560 for (i = 0; i < count; i++, start++, start_phys_aligned += incr) {
561 if (*start != val) {
562 if (start_phys_aligned == last_bad + incr) {
563 last_bad += incr;
564 } else {
565 if (start_bad) {
566 printk(KERN_CONT "\n %016lx bad mem addr %016lx - %016lx reserved",
567 val, start_bad, last_bad + incr);
568 reserve_early(start_bad, last_bad - start_bad, "BAD RAM");
569 }
570 start_bad = last_bad = start_phys_aligned;
571 }
572 }
573 }
574 if (start_bad) {
575 printk(KERN_CONT "\n %016lx bad mem addr %016lx - %016lx reserved",
576 val, start_bad, last_bad + incr);
577 reserve_early(start_bad, last_bad - start_bad, "BAD RAM");
578 }
579
580}
581
582/* default is disabled */
583static int memtest_pattern __initdata;
584
585static int __init parse_memtest(char *arg)
586{
587 if (arg)
588 memtest_pattern = simple_strtoul(arg, NULL, 0);
589 return 0;
590}
591
592early_param("memtest", parse_memtest);
593
594static void __init early_memtest(unsigned long start, unsigned long end)
595{
596 u64 t_start, t_size;
597 unsigned pattern;
598
599 if (!memtest_pattern)
600 return;
601
602 printk(KERN_INFO "early_memtest: pattern num %d", memtest_pattern);
603 for (pattern = 0; pattern < memtest_pattern; pattern++) {
604 t_start = start;
605 t_size = 0;
606 while (t_start < end) {
607 t_start = find_e820_area_size(t_start, &t_size, 1);
608
609 /* done ? */
610 if (t_start >= end)
611 break;
612 if (t_start + t_size > end)
613 t_size = end - t_start;
614
615 printk(KERN_CONT "\n %016llx - %016llx pattern %d",
616 (unsigned long long)t_start,
617 (unsigned long long)t_start + t_size, pattern);
618
619 memtest(t_start, t_size, pattern);
620
621 t_start += t_size;
622 }
623 }
624 printk(KERN_CONT "\n");
625}
626#else
627static void __init early_memtest(unsigned long start, unsigned long end)
628{
629}
630#endif
631
632static unsigned long __init kernel_physical_mapping_init(unsigned long start,
633 unsigned long end,
634 unsigned long page_size_mask)
635{
636
637 unsigned long next, last_map_addr = end;
638
639 start = (unsigned long)__va(start);

--- 610 unchanged lines hidden --- 		520static unsigned long __init kernel_physical_mapping_init(unsigned long start,
521 unsigned long end,
522 unsigned long page_size_mask)
523{
524
525 unsigned long next, last_map_addr = end;
526
527 start = (unsigned long)__va(start);

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