diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/e820.c | 32 | ||||
| -rw-r--r-- | arch/x86/kernel/e820_32.c | 32 | ||||
| -rw-r--r-- | arch/x86/kernel/e820_64.c | 32 | ||||
| -rw-r--r-- | arch/x86/kernel/setup_32.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/setup_64.c | 2 |
5 files changed, 34 insertions, 66 deletions
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c index 35da8cdbe5e..0cd9132c945 100644 --- a/arch/x86/kernel/e820.c +++ b/arch/x86/kernel/e820.c @@ -18,6 +18,7 @@ #include <linux/module.h> #include <linux/mm.h> #include <linux/pfn.h> +#include <linux/suspend.h> #include <asm/pgtable.h> #include <asm/page.h> @@ -495,6 +496,37 @@ __init void e820_setup_gap(void) pci_mem_start, gapstart, gapsize); } +#if defined(CONFIG_X86_64) || \ + (defined(CONFIG_X86_32) && defined(CONFIG_HIBERNATION)) +/** + * Find the ranges of physical addresses that do not correspond to + * e820 RAM areas and mark the corresponding pages as nosave for + * hibernation (32 bit) or software suspend and suspend to RAM (64 bit). + * + * This function requires the e820 map to be sorted and without any + * overlapping entries and assumes the first e820 area to be RAM. + */ +void __init e820_mark_nosave_regions(unsigned long limit_pfn) +{ + int i; + unsigned long pfn; + + pfn = PFN_DOWN(e820.map[0].addr + e820.map[0].size); + for (i = 1; i < e820.nr_map; i++) { + struct e820entry *ei = &e820.map[i]; + + if (pfn < PFN_UP(ei->addr)) + register_nosave_region(pfn, PFN_UP(ei->addr)); + + pfn = PFN_DOWN(ei->addr + ei->size); + if (ei->type != E820_RAM) + register_nosave_region(PFN_UP(ei->addr), pfn); + + if (pfn >= limit_pfn) + break; + } +} +#endif /* * Early reserved memory areas. diff --git a/arch/x86/kernel/e820_32.c b/arch/x86/kernel/e820_32.c index dfe25751038..db760d4706a 100644 --- a/arch/x86/kernel/e820_32.c +++ b/arch/x86/kernel/e820_32.c @@ -9,7 +9,6 @@ #include <linux/mm.h> #include <linux/pfn.h> #include <linux/uaccess.h> -#include <linux/suspend.h> #include <asm/pgtable.h> #include <asm/page.h> @@ -208,37 +207,6 @@ void __init init_iomem_resources(struct resource *code_resource, } } -#if defined(CONFIG_PM) && defined(CONFIG_HIBERNATION) -/** - * e820_mark_nosave_regions - Find the ranges of physical addresses that do not - * correspond to e820 RAM areas and mark the corresponding pages as nosave for - * hibernation. - * - * This function requires the e820 map to be sorted and without any - * overlapping entries and assumes the first e820 area to be RAM. - */ -void __init e820_mark_nosave_regions(void) -{ - int i; - unsigned long pfn; - - pfn = PFN_DOWN(e820.map[0].addr + e820.map[0].size); - for (i = 1; i < e820.nr_map; i++) { - struct e820entry *ei = &e820.map[i]; - - if (pfn < PFN_UP(ei->addr)) - register_nosave_region(pfn, PFN_UP(ei->addr)); - - pfn = PFN_DOWN(ei->addr + ei->size); - if (ei->type != E820_RAM) - register_nosave_region(PFN_UP(ei->addr), pfn); - - if (pfn >= max_low_pfn) - break; - } -} -#endif - /* * Find the highest page frame number we have available */ diff --git a/arch/x86/kernel/e820_64.c b/arch/x86/kernel/e820_64.c index 3b2e0b1bb49..5e063e72b24 100644 --- a/arch/x86/kernel/e820_64.c +++ b/arch/x86/kernel/e820_64.c @@ -17,7 +17,6 @@ #include <linux/kexec.h> #include <linux/module.h> #include <linux/mm.h> -#include <linux/suspend.h> #include <linux/pfn.h> #include <linux/pci.h> @@ -94,37 +93,6 @@ void __init e820_reserve_resources(void) } /* - * Find the ranges of physical addresses that do not correspond to - * e820 RAM areas and mark the corresponding pages as nosave for software - * suspend and suspend to RAM. - * - * This function requires the e820 map to be sorted and without any - * overlapping entries and assumes the first e820 area to be RAM. - */ -void __init e820_mark_nosave_regions(void) -{ - int i; - unsigned long paddr; - - paddr = round_down(e820.map[0].addr + e820.map[0].size, PAGE_SIZE); - for (i = 1; i < e820.nr_map; i++) { - struct e820entry *ei = &e820.map[i]; - - if (paddr < ei->addr) - register_nosave_region(PFN_DOWN(paddr), - PFN_UP(ei->addr)); - - paddr = round_down(ei->addr + ei->size, PAGE_SIZE); - if (ei->type != E820_RAM) - register_nosave_region(PFN_UP(ei->addr), - PFN_DOWN(paddr)); - - if (paddr >= (end_pfn << PAGE_SHIFT)) - break; - } -} - -/* * Finds an active region in the address range from start_pfn to last_pfn and * returns its range in ei_startpfn and ei_endpfn for the e820 entry. */ diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c index 3c451d143eb..e1173aecf69 100644 --- a/arch/x86/kernel/setup_32.c +++ b/arch/x86/kernel/setup_32.c @@ -820,7 +820,7 @@ void __init setup_arch(char **cmdline_p) #endif e820_setup_gap(); - e820_mark_nosave_regions(); + e820_mark_nosave_regions(max_low_pfn); #ifdef CONFIG_VT #if defined(CONFIG_VGA_CONSOLE) diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c index 6dff1286ad8..975a5da46e4 100644 --- a/arch/x86/kernel/setup_64.c +++ b/arch/x86/kernel/setup_64.c @@ -516,7 +516,7 @@ void __init setup_arch(char **cmdline_p) * We trust e820 completely. No explicit ROM probing in memory. */ e820_reserve_resources(); - e820_mark_nosave_regions(); + e820_mark_nosave_regions(end_pfn); /* request I/O space for devices used on all i[345]86 PCs */ for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++) |