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| author | Ingo Molnar <mingo@elte.hu> | 2008-07-22 09:06:21 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-22 09:06:21 +0200 |
| commit | 76c3bb15d6786a0b8da0ad0090e0c9c3672fc08b (patch) | |
| tree | 3824e008db9d554229a70c85fbbc13238276bd7a /arch/x86/vdso/vma.c | |
| parent | 7be42004065ce4df193aeef5befd26805267d0d9 (diff) | |
| parent | 93ded9b8fd42abe2c3607097963d8de6ad9117eb (diff) | |
Merge branch 'linus' into x86/x2apic
Diffstat (limited to 'arch/x86/vdso/vma.c')
| -rw-r--r-- | arch/x86/vdso/vma.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/arch/x86/vdso/vma.c b/arch/x86/vdso/vma.c index 19a6cfaf5db..257ba4a10ab 100644 --- a/arch/x86/vdso/vma.c +++ b/arch/x86/vdso/vma.c @@ -21,7 +21,8 @@ unsigned int __read_mostly vdso_enabled = 1; extern char vdso_start[], vdso_end[]; extern unsigned short vdso_sync_cpuid; -struct page **vdso_pages; +static struct page **vdso_pages; +static unsigned vdso_size; static inline void *var_ref(void *p, char *name) { @@ -38,6 +39,7 @@ static int __init init_vdso_vars(void) int i; char *vbase; + vdso_size = npages << PAGE_SHIFT; vdso_pages = kmalloc(sizeof(struct page *) * npages, GFP_KERNEL); if (!vdso_pages) goto oom; @@ -101,20 +103,19 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int exstack) struct mm_struct *mm = current->mm; unsigned long addr; int ret; - unsigned len = round_up(vdso_end - vdso_start, PAGE_SIZE); if (!vdso_enabled) return 0; down_write(&mm->mmap_sem); - addr = vdso_addr(mm->start_stack, len); - addr = get_unmapped_area(NULL, addr, len, 0, 0); + addr = vdso_addr(mm->start_stack, vdso_size); + addr = get_unmapped_area(NULL, addr, vdso_size, 0, 0); if (IS_ERR_VALUE(addr)) { ret = addr; goto up_fail; } - ret = install_special_mapping(mm, addr, len, + ret = install_special_mapping(mm, addr, vdso_size, VM_READ|VM_EXEC| VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC| VM_ALWAYSDUMP, |