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-rw-r--r--arch/i386/kernel/setup.c106
1 files changed, 0 insertions, 106 deletions
diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c
index 6c1639836e06..6bef9273733e 100644
--- a/arch/i386/kernel/setup.c
+++ b/arch/i386/kernel/setup.c
@@ -48,7 +48,6 @@
48#include <linux/crash_dump.h> 48#include <linux/crash_dump.h>
49#include <linux/dmi.h> 49#include <linux/dmi.h>
50#include <linux/pfn.h> 50#include <linux/pfn.h>
51#include <linux/suspend.h>
52 51
53#include <video/edid.h> 52#include <video/edid.h>
54 53
@@ -1427,111 +1426,6 @@ static void set_mca_bus(int x)
1427static void set_mca_bus(int x) { } 1426static void set_mca_bus(int x) { }
1428#endif 1427#endif
1429 1428
1430#ifdef CONFIG_SOFTWARE_SUSPEND
1431static void __init mark_nosave_page_range(unsigned long start, unsigned long end)
1432{
1433 struct page *page;
1434 while (start <= end) {
1435 page = pfn_to_page(start);
1436 SetPageNosave(page);
1437 start++;
1438 }
1439}
1440
1441static void __init e820_nosave_reserved_pages(void)
1442{
1443 int i;
1444 unsigned long r_start = 0, r_end = 0;
1445
1446 /* Assume e820 map is sorted */
1447 for (i = 0; i < e820.nr_map; i++) {
1448 struct e820entry *ei = &e820.map[i];
1449 unsigned long start, end;
1450
1451 start = PFN_DOWN(ei->addr);
1452 end = PFN_UP(ei->addr + ei->size);
1453 if (start >= end)
1454 continue;
1455 if (ei->type == E820_RESERVED)
1456 continue;
1457 r_end = start;
1458 /*
1459 * Highmem 'Reserved' pages are marked as reserved, swsusp
1460 * will not save/restore them, so we ignore these pages here.
1461 */
1462 if (r_end > max_low_pfn)
1463 r_end = max_low_pfn;
1464 if (r_end > r_start)
1465 mark_nosave_page_range(r_start, r_end-1);
1466 if (r_end >= max_low_pfn)
1467 break;
1468 r_start = end;
1469 }
1470}
1471
1472static void __init e820_save_acpi_pages(void)
1473{
1474 int i;
1475
1476 /* Assume e820 map is sorted */
1477 for (i = 0; i < e820.nr_map; i++) {
1478 struct e820entry *ei = &e820.map[i];
1479 unsigned long start, end;
1480
1481 start = ei->addr;
1482 end = ei->addr + ei->size;
1483 if (start >= end)
1484 continue;
1485 if (ei->type != E820_ACPI && ei->type != E820_NVS)
1486 continue;
1487 /*
1488 * If the region is below max_low_pfn, it will be
1489 * saved/restored by swsusp follow 'RAM' type.
1490 */
1491 if (start < (max_low_pfn << PAGE_SHIFT))
1492 start = max_low_pfn << PAGE_SHIFT;
1493 /*
1494 * Highmem pages (ACPI NVS/Data) are reserved, but swsusp
1495 * highmem save/restore will not save/restore them. We marked
1496 * them as arch saveable pages here
1497 */
1498 if (end > start)
1499 swsusp_add_arch_pages(start, end);
1500 }
1501}
1502
1503extern char __start_rodata, __end_rodata;
1504/*
1505 * BIOS reserved region/hole - no save/restore
1506 * ACPI NVS - save/restore
1507 * ACPI Data - this is a little tricky, the mem could be used by OS after OS
1508 * reads tables from the region, but anyway save/restore the memory hasn't any
1509 * side effect and Linux runtime module load/unload might use it.
1510 * kernel rodata - no save/restore (kernel rodata isn't changed)
1511 */
1512static int __init mark_nosave_pages(void)
1513{
1514 unsigned long pfn_start, pfn_end;
1515
1516 /* FIXME: provide a version for efi BIOS */
1517 if (efi_enabled)
1518 return 0;
1519 /* BIOS reserved regions & holes */
1520 e820_nosave_reserved_pages();
1521
1522 /* kernel rodata */
1523 pfn_start = PFN_UP(virt_to_phys(&__start_rodata));
1524 pfn_end = PFN_DOWN(virt_to_phys(&__end_rodata));
1525 mark_nosave_page_range(pfn_start, pfn_end-1);
1526
1527 /* record ACPI Data/NVS as saveable */
1528 e820_save_acpi_pages();
1529
1530 return 0;
1531}
1532core_initcall(mark_nosave_pages);
1533#endif
1534
1535/* 1429/*
1536 * Determine if we were loaded by an EFI loader. If so, then we have also been 1430 * Determine if we were loaded by an EFI loader. If so, then we have also been
1537 * passed the efi memmap, systab, etc., so we should use these data structures 1431 * passed the efi memmap, systab, etc., so we should use these data structures