diff options
Diffstat (limited to 'arch/x86_64/kernel')
| -rw-r--r-- | arch/x86_64/kernel/acpi/Makefile | 1 | ||||
| -rw-r--r-- | arch/x86_64/kernel/acpi/processor.c | 72 | ||||
| -rw-r--r-- | arch/x86_64/kernel/acpi/sleep.c | 7 | ||||
| -rw-r--r-- | arch/x86_64/kernel/apic.c | 2 | ||||
| -rw-r--r-- | arch/x86_64/kernel/i387.c | 2 | ||||
| -rw-r--r-- | arch/x86_64/kernel/setup.c | 95 |
6 files changed, 103 insertions, 76 deletions
diff --git a/arch/x86_64/kernel/acpi/Makefile b/arch/x86_64/kernel/acpi/Makefile index 4fe97071f297..080b9963f1bc 100644 --- a/arch/x86_64/kernel/acpi/Makefile +++ b/arch/x86_64/kernel/acpi/Makefile @@ -4,5 +4,6 @@ obj-$(CONFIG_ACPI_SLEEP) += sleep.o wakeup.o ifneq ($(CONFIG_ACPI_PROCESSOR),) obj-y += processor.o +processor-y := ../../../i386/kernel/acpi/processor.o ../../../i386/kernel/acpi/cstate.o endif diff --git a/arch/x86_64/kernel/acpi/processor.c b/arch/x86_64/kernel/acpi/processor.c deleted file mode 100644 index 3bdc2baa5bb1..000000000000 --- a/arch/x86_64/kernel/acpi/processor.c +++ /dev/null @@ -1,72 +0,0 @@ -/* - * arch/x86_64/kernel/acpi/processor.c - * - * Copyright (C) 2005 Intel Corporation - * Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> - * - Added _PDC for platforms with Intel CPUs - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/acpi.h> - -#include <acpi/processor.h> -#include <asm/acpi.h> - -static void init_intel_pdc(struct acpi_processor *pr, struct cpuinfo_x86 *c) -{ - struct acpi_object_list *obj_list; - union acpi_object *obj; - u32 *buf; - - /* allocate and initialize pdc. It will be used later. */ - obj_list = kmalloc(sizeof(struct acpi_object_list), GFP_KERNEL); - if (!obj_list) { - printk(KERN_ERR "Memory allocation error\n"); - return; - } - - obj = kmalloc(sizeof(union acpi_object), GFP_KERNEL); - if (!obj) { - printk(KERN_ERR "Memory allocation error\n"); - kfree(obj_list); - return; - } - - buf = kmalloc(12, GFP_KERNEL); - if (!buf) { - printk(KERN_ERR "Memory allocation error\n"); - kfree(obj); - kfree(obj_list); - return; - } - - buf[0] = ACPI_PDC_REVISION_ID; - buf[1] = 1; - buf[2] = ACPI_PDC_EST_CAPABILITY_SMP; - - obj->type = ACPI_TYPE_BUFFER; - obj->buffer.length = 12; - obj->buffer.pointer = (u8 *) buf; - obj_list->count = 1; - obj_list->pointer = obj; - pr->pdc = obj_list; - - return; -} - -/* Initialize _PDC data based on the CPU vendor */ -void arch_acpi_processor_init_pdc(struct acpi_processor *pr) -{ - unsigned int cpu = pr->id; - struct cpuinfo_x86 *c = cpu_data + cpu; - - pr->pdc = NULL; - if (c->x86_vendor == X86_VENDOR_INTEL && cpu_has(c, X86_FEATURE_EST)) - init_intel_pdc(pr, c); - - return; -} - -EXPORT_SYMBOL(arch_acpi_processor_init_pdc); diff --git a/arch/x86_64/kernel/acpi/sleep.c b/arch/x86_64/kernel/acpi/sleep.c index 867a0ebee177..091bc79c888f 100644 --- a/arch/x86_64/kernel/acpi/sleep.c +++ b/arch/x86_64/kernel/acpi/sleep.c @@ -35,6 +35,8 @@ #include <linux/pci.h> #include <linux/bootmem.h> #include <linux/acpi.h> +#include <linux/cpumask.h> + #include <asm/mpspec.h> #include <asm/io.h> #include <asm/apic.h> @@ -66,7 +68,8 @@ static void init_low_mapping(void) pgd_t *slot0 = pgd_offset(current->mm, 0UL); low_ptr = *slot0; set_pgd(slot0, *pgd_offset(current->mm, PAGE_OFFSET)); - flush_tlb_all(); + WARN_ON(num_online_cpus() != 1); + local_flush_tlb(); } /** @@ -92,7 +95,7 @@ int acpi_save_state_mem(void) void acpi_restore_state_mem(void) { set_pgd(pgd_offset(current->mm, 0UL), low_ptr); - flush_tlb_all(); + local_flush_tlb(); } /** diff --git a/arch/x86_64/kernel/apic.c b/arch/x86_64/kernel/apic.c index 100a30c40044..29ef99001e05 100644 --- a/arch/x86_64/kernel/apic.c +++ b/arch/x86_64/kernel/apic.c @@ -51,7 +51,7 @@ int disable_apic_timer __initdata; static cpumask_t timer_interrupt_broadcast_ipi_mask; /* Using APIC to generate smp_local_timer_interrupt? */ -int using_apic_timer = 0; +int using_apic_timer __read_mostly = 0; static void apic_pm_activate(void); diff --git a/arch/x86_64/kernel/i387.c b/arch/x86_64/kernel/i387.c index a5d7e16b928e..44ddb1ec808d 100644 --- a/arch/x86_64/kernel/i387.c +++ b/arch/x86_64/kernel/i387.c @@ -24,7 +24,7 @@ #include <asm/ptrace.h> #include <asm/uaccess.h> -unsigned int mxcsr_feature_mask = 0xffffffff; +unsigned int mxcsr_feature_mask __read_mostly = 0xffffffff; void mxcsr_feature_mask_init(void) { diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c index 655b9192eeb3..b8d5116d7371 100644 --- a/arch/x86_64/kernel/setup.c +++ b/arch/x86_64/kernel/setup.c @@ -47,6 +47,7 @@ #include <linux/dmi.h> #include <linux/dma-mapping.h> #include <linux/ctype.h> +#include <linux/suspend.h> #include <asm/mtrr.h> #include <asm/uaccess.h> @@ -595,6 +596,100 @@ static void discover_ebda(void) ebda_size = 64*1024; } +#ifdef CONFIG_SOFTWARE_SUSPEND +static void __init mark_nosave_page_range(unsigned long start, unsigned long end) +{ + struct page *page; + while (start <= end) { + page = pfn_to_page(start); + SetPageNosave(page); + start++; + } +} + +static void __init e820_nosave_reserved_pages(void) +{ + int i; + unsigned long r_start = 0, r_end = 0; + + /* Assume e820 map is sorted */ + for (i = 0; i < e820.nr_map; i++) { + struct e820entry *ei = &e820.map[i]; + unsigned long start, end; + + start = round_down(ei->addr, PAGE_SIZE); + end = round_up(ei->addr + ei->size, PAGE_SIZE); + if (start >= end) + continue; + if (ei->type == E820_RESERVED) + continue; + r_end = start>>PAGE_SHIFT; + /* swsusp ignores invalid pfn, ignore these pages here */ + if (r_end > end_pfn) + r_end = end_pfn; + if (r_end > r_start) + mark_nosave_page_range(r_start, r_end-1); + if (r_end >= end_pfn) + break; + r_start = end>>PAGE_SHIFT; + } +} + +static void __init e820_save_acpi_pages(void) +{ + int i; + + /* Assume e820 map is sorted */ + for (i = 0; i < e820.nr_map; i++) { + struct e820entry *ei = &e820.map[i]; + unsigned long start, end; + + start = ei->addr, PAGE_SIZE; + end = ei->addr + ei->size; + if (start >= end) + continue; + if (ei->type != E820_ACPI && ei->type != E820_NVS) + continue; + /* + * If the region is below end_pfn, it will be + * saved/restored by swsusp follow 'RAM' type. + */ + if (start < (end_pfn << PAGE_SHIFT)) + start = end_pfn << PAGE_SHIFT; + if (end > start) + swsusp_add_arch_pages(start, end); + } +} + +extern char __start_rodata, __end_rodata; +/* + * BIOS reserved region/hole - no save/restore + * ACPI NVS - save/restore + * ACPI Data - this is a little tricky, the mem could be used by OS after OS + * reads tables from the region, but anyway save/restore the memory hasn't any + * side effect and Linux runtime module load/unload might use it. + * kernel rodata - no save/restore (kernel rodata isn't changed) + */ +static int __init mark_nosave_pages(void) +{ + unsigned long pfn_start, pfn_end; + + /* BIOS reserved regions & holes */ + e820_nosave_reserved_pages(); + + /* kernel rodata */ + pfn_start = round_up(__pa_symbol(&__start_rodata), PAGE_SIZE) >> PAGE_SHIFT; + pfn_end = round_down(__pa_symbol(&__end_rodata), PAGE_SIZE) >> PAGE_SHIFT; + mark_nosave_page_range(pfn_start, pfn_end-1); + + /* record ACPI Data/NVS as saveable */ + e820_save_acpi_pages(); + + return 0; +} +core_initcall(mark_nosave_pages); +#endif + void __init setup_arch(char **cmdline_p) { unsigned long kernel_end; |
