diff options
Diffstat (limited to 'arch/i386/mm')
| -rw-r--r-- | arch/i386/mm/boot_ioremap.c | 1 | ||||
| -rw-r--r-- | arch/i386/mm/discontig.c | 3 | ||||
| -rw-r--r-- | arch/i386/mm/extable.c | 1 | ||||
| -rw-r--r-- | arch/i386/mm/fault.c | 61 | ||||
| -rw-r--r-- | arch/i386/mm/hugetlbpage.c | 1 | ||||
| -rw-r--r-- | arch/i386/mm/init.c | 18 | ||||
| -rw-r--r-- | arch/i386/mm/pageattr.c | 13 | ||||
| -rw-r--r-- | arch/i386/mm/pgtable.c | 15 |
8 files changed, 72 insertions, 41 deletions
diff --git a/arch/i386/mm/boot_ioremap.c b/arch/i386/mm/boot_ioremap.c index 523b30634e0a..5d44f4f5ff59 100644 --- a/arch/i386/mm/boot_ioremap.c +++ b/arch/i386/mm/boot_ioremap.c @@ -15,7 +15,6 @@ * boot_pte_t is defined only if this all works correctly */ -#include <linux/config.h> #undef CONFIG_X86_PAE #include <asm/page.h> #include <asm/pgtable.h> diff --git a/arch/i386/mm/discontig.c b/arch/i386/mm/discontig.c index fe6eb901326e..7c392dc553b8 100644 --- a/arch/i386/mm/discontig.c +++ b/arch/i386/mm/discontig.c @@ -22,7 +22,6 @@ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ -#include <linux/config.h> #include <linux/mm.h> #include <linux/bootmem.h> #include <linux/mmzone.h> @@ -43,7 +42,7 @@ EXPORT_SYMBOL(node_data); bootmem_data_t node0_bdata; /* - * numa interface - we expect the numa architecture specfic code to have + * numa interface - we expect the numa architecture specific code to have * populated the following initialisation. * * 1) node_online_map - the map of all nodes configured (online) in the system diff --git a/arch/i386/mm/extable.c b/arch/i386/mm/extable.c index f706449319c4..de03c5430abc 100644 --- a/arch/i386/mm/extable.c +++ b/arch/i386/mm/extable.c @@ -2,7 +2,6 @@ * linux/arch/i386/mm/extable.c */ -#include <linux/config.h> #include <linux/module.h> #include <linux/spinlock.h> #include <asm/uaccess.h> diff --git a/arch/i386/mm/fault.c b/arch/i386/mm/fault.c index 7f0fcf219a26..f7279468323a 100644 --- a/arch/i386/mm/fault.c +++ b/arch/i386/mm/fault.c @@ -30,6 +30,40 @@ extern void die(const char *,struct pt_regs *,long); +#ifdef CONFIG_KPROBES +ATOMIC_NOTIFIER_HEAD(notify_page_fault_chain); +int register_page_fault_notifier(struct notifier_block *nb) +{ + vmalloc_sync_all(); + return atomic_notifier_chain_register(¬ify_page_fault_chain, nb); +} + +int unregister_page_fault_notifier(struct notifier_block *nb) +{ + return atomic_notifier_chain_unregister(¬ify_page_fault_chain, nb); +} + +static inline int notify_page_fault(enum die_val val, const char *str, + struct pt_regs *regs, long err, int trap, int sig) +{ + struct die_args args = { + .regs = regs, + .str = str, + .err = err, + .trapnr = trap, + .signr = sig + }; + return atomic_notifier_call_chain(¬ify_page_fault_chain, val, &args); +} +#else +static inline int notify_page_fault(enum die_val val, const char *str, + struct pt_regs *regs, long err, int trap, int sig) +{ + return NOTIFY_DONE; +} +#endif + + /* * Unlock any spinlocks which will prevent us from getting the * message out @@ -77,12 +111,15 @@ static inline unsigned long get_segment_eip(struct pt_regs *regs, unsigned seg = regs->xcs & 0xffff; u32 seg_ar, seg_limit, base, *desc; + /* Unlikely, but must come before segment checks. */ + if (unlikely(regs->eflags & VM_MASK)) { + base = seg << 4; + *eip_limit = base + 0xffff; + return base + (eip & 0xffff); + } + /* The standard kernel/user address space limit. */ *eip_limit = (seg & 3) ? USER_DS.seg : KERNEL_DS.seg; - - /* Unlikely, but must come before segment checks. */ - if (unlikely((regs->eflags & VM_MASK) != 0)) - return eip + (seg << 4); /* By far the most common cases. */ if (likely(seg == __USER_CS || seg == __KERNEL_CS)) @@ -321,7 +358,7 @@ fastcall void __kprobes do_page_fault(struct pt_regs *regs, if (unlikely(address >= TASK_SIZE)) { if (!(error_code & 0x0000000d) && vmalloc_fault(address) >= 0) return; - if (notify_die(DIE_PAGE_FAULT, "page fault", regs, error_code, 14, + if (notify_page_fault(DIE_PAGE_FAULT, "page fault", regs, error_code, 14, SIGSEGV) == NOTIFY_STOP) return; /* @@ -331,7 +368,7 @@ fastcall void __kprobes do_page_fault(struct pt_regs *regs, goto bad_area_nosemaphore; } - if (notify_die(DIE_PAGE_FAULT, "page fault", regs, error_code, 14, + if (notify_page_fault(DIE_PAGE_FAULT, "page fault", regs, error_code, 14, SIGSEGV) == NOTIFY_STOP) return; @@ -352,7 +389,7 @@ fastcall void __kprobes do_page_fault(struct pt_regs *regs, /* When running in the kernel we expect faults to occur only to * addresses in user space. All other faults represent errors in the * kernel and should generate an OOPS. Unfortunatly, in the case of an - * erroneous fault occuring in a code path which already holds mmap_sem + * erroneous fault occurring in a code path which already holds mmap_sem * we will deadlock attempting to validate the fault against the * address space. Luckily the kernel only validly references user * space from well defined areas of code, which are listed in the @@ -380,12 +417,12 @@ fastcall void __kprobes do_page_fault(struct pt_regs *regs, goto bad_area; if (error_code & 4) { /* - * accessing the stack below %esp is always a bug. - * The "+ 32" is there due to some instructions (like - * pusha) doing post-decrement on the stack and that - * doesn't show up until later.. + * Accessing the stack below %esp is always a bug. + * The large cushion allows instructions like enter + * and pusha to work. ("enter $65535,$31" pushes + * 32 pointers and then decrements %esp by 65535.) */ - if (address + 32 < regs->esp) + if (address + 65536 + 32 * sizeof(unsigned long) < regs->esp) goto bad_area; } if (expand_stack(vma, address)) diff --git a/arch/i386/mm/hugetlbpage.c b/arch/i386/mm/hugetlbpage.c index a7d891585411..1719a8141f81 100644 --- a/arch/i386/mm/hugetlbpage.c +++ b/arch/i386/mm/hugetlbpage.c @@ -4,7 +4,6 @@ * Copyright (C) 2002, Rohit Seth <rohit.seth@intel.com> */ -#include <linux/config.h> #include <linux/init.h> #include <linux/fs.h> #include <linux/mm.h> diff --git a/arch/i386/mm/init.c b/arch/i386/mm/init.c index 3df1371d4520..89e8486aac34 100644 --- a/arch/i386/mm/init.c +++ b/arch/i386/mm/init.c @@ -6,7 +6,6 @@ * Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999 */ -#include <linux/config.h> #include <linux/module.h> #include <linux/signal.h> #include <linux/sched.h> @@ -23,12 +22,14 @@ #include <linux/init.h> #include <linux/highmem.h> #include <linux/pagemap.h> +#include <linux/poison.h> #include <linux/bootmem.h> #include <linux/slab.h> #include <linux/proc_fs.h> #include <linux/efi.h> #include <linux/memory_hotplug.h> #include <linux/initrd.h> +#include <linux/cpumask.h> #include <asm/processor.h> #include <asm/system.h> @@ -384,7 +385,7 @@ static void __init pagetable_init (void) #endif } -#ifdef CONFIG_SOFTWARE_SUSPEND +#if defined(CONFIG_SOFTWARE_SUSPEND) || defined(CONFIG_ACPI_SLEEP) /* * Swap suspend & friends need this for resume because things like the intel-agp * driver might have split up a kernel 4MB mapping. @@ -653,7 +654,7 @@ void __init mem_init(void) */ #ifdef CONFIG_MEMORY_HOTPLUG #ifndef CONFIG_NEED_MULTIPLE_NODES -int add_memory(u64 start, u64 size) +int arch_add_memory(int nid, u64 start, u64 size) { struct pglist_data *pgdata = &contig_page_data; struct zone *zone = pgdata->node_zones + MAX_NR_ZONES-1; @@ -724,16 +725,15 @@ static int noinline do_test_wp_bit(void) #ifdef CONFIG_DEBUG_RODATA -extern char __start_rodata, __end_rodata; void mark_rodata_ro(void) { - unsigned long addr = (unsigned long)&__start_rodata; + unsigned long addr = (unsigned long)__start_rodata; - for (; addr < (unsigned long)&__end_rodata; addr += PAGE_SIZE) + for (; addr < (unsigned long)__end_rodata; addr += PAGE_SIZE) change_page_attr(virt_to_page(addr), 1, PAGE_KERNEL_RO); - printk ("Write protecting the kernel read-only data: %luk\n", - (unsigned long)(&__end_rodata - &__start_rodata) >> 10); + printk("Write protecting the kernel read-only data: %uk\n", + (__end_rodata - __start_rodata) >> 10); /* * change_page_attr() requires a global_flush_tlb() call after it. @@ -752,7 +752,7 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end) for (addr = begin; addr < end; addr += PAGE_SIZE) { ClearPageReserved(virt_to_page(addr)); init_page_count(virt_to_page(addr)); - memset((void *)addr, 0xcc, PAGE_SIZE); + memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE); free_page(addr); totalram_pages++; } diff --git a/arch/i386/mm/pageattr.c b/arch/i386/mm/pageattr.c index 92c3d9f0e731..8564b6ae17e3 100644 --- a/arch/i386/mm/pageattr.c +++ b/arch/i386/mm/pageattr.c @@ -3,7 +3,6 @@ * Thanks to Ben LaHaise for precious feedback. */ -#include <linux/config.h> #include <linux/mm.h> #include <linux/sched.h> #include <linux/highmem.h> @@ -209,19 +208,19 @@ int change_page_attr(struct page *page, int numpages, pgprot_t prot) } void global_flush_tlb(void) -{ - LIST_HEAD(l); +{ + struct list_head l; struct page *pg, *next; BUG_ON(irqs_disabled()); spin_lock_irq(&cpa_lock); - list_splice_init(&df_list, &l); + list_replace_init(&df_list, &l); spin_unlock_irq(&cpa_lock); flush_map(); list_for_each_entry_safe(pg, next, &l, lru) __free_page(pg); -} +} #ifdef CONFIG_DEBUG_PAGEALLOC void kernel_map_pages(struct page *page, int numpages, int enable) @@ -229,8 +228,8 @@ void kernel_map_pages(struct page *page, int numpages, int enable) if (PageHighMem(page)) return; if (!enable) - mutex_debug_check_no_locks_freed(page_address(page), - numpages * PAGE_SIZE); + debug_check_no_locks_freed(page_address(page), + numpages * PAGE_SIZE); /* the return value is ignored - the calls cannot fail, * large pages are disabled at boot time. diff --git a/arch/i386/mm/pgtable.c b/arch/i386/mm/pgtable.c index 2889567e21a1..bd98768d8764 100644 --- a/arch/i386/mm/pgtable.c +++ b/arch/i386/mm/pgtable.c @@ -2,7 +2,6 @@ * linux/arch/i386/mm/pgtable.c */ -#include <linux/config.h> #include <linux/sched.h> #include <linux/kernel.h> #include <linux/errno.h> @@ -30,7 +29,6 @@ void show_mem(void) struct page *page; pg_data_t *pgdat; unsigned long i; - struct page_state ps; unsigned long flags; printk(KERN_INFO "Mem-info:\n"); @@ -58,12 +56,13 @@ void show_mem(void) printk(KERN_INFO "%d pages shared\n", shared); printk(KERN_INFO "%d pages swap cached\n", cached); - get_page_state(&ps); - printk(KERN_INFO "%lu pages dirty\n", ps.nr_dirty); - printk(KERN_INFO "%lu pages writeback\n", ps.nr_writeback); - printk(KERN_INFO "%lu pages mapped\n", ps.nr_mapped); - printk(KERN_INFO "%lu pages slab\n", ps.nr_slab); - printk(KERN_INFO "%lu pages pagetables\n", ps.nr_page_table_pages); + printk(KERN_INFO "%lu pages dirty\n", global_page_state(NR_FILE_DIRTY)); + printk(KERN_INFO "%lu pages writeback\n", + global_page_state(NR_WRITEBACK)); + printk(KERN_INFO "%lu pages mapped\n", global_page_state(NR_FILE_MAPPED)); + printk(KERN_INFO "%lu pages slab\n", global_page_state(NR_SLAB)); + printk(KERN_INFO "%lu pages pagetables\n", + global_page_state(NR_PAGETABLE)); } /* |