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Diffstat (limited to 'arch/um/sys-x86_64/vdso/vma.c')
-rw-r--r--arch/um/sys-x86_64/vdso/vma.c74
1 files changed, 0 insertions, 74 deletions
diff --git a/arch/um/sys-x86_64/vdso/vma.c b/arch/um/sys-x86_64/vdso/vma.c
deleted file mode 100644
index 9495c8d0ce37..000000000000
--- a/arch/um/sys-x86_64/vdso/vma.c
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * Copyright (C) 2011 Richard Weinberger <richrd@nod.at>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/slab.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <asm/page.h>
-#include <linux/init.h>
-
-unsigned int __read_mostly vdso_enabled = 1;
-unsigned long um_vdso_addr;
-
-extern unsigned long task_size;
-extern char vdso_start[], vdso_end[];
-
-static struct page **vdsop;
-
-static int __init init_vdso(void)
-{
- struct page *um_vdso;
-
- BUG_ON(vdso_end - vdso_start > PAGE_SIZE);
-
- um_vdso_addr = task_size - PAGE_SIZE;
-
- vdsop = kmalloc(GFP_KERNEL, sizeof(struct page *));
- if (!vdsop)
- goto oom;
-
- um_vdso = alloc_page(GFP_KERNEL);
- if (!um_vdso) {
- kfree(vdsop);
-
- goto oom;
- }
-
- copy_page(page_address(um_vdso), vdso_start);
- *vdsop = um_vdso;
-
- return 0;
-
-oom:
- printk(KERN_ERR "Cannot allocate vdso\n");
- vdso_enabled = 0;
-
- return -ENOMEM;
-}
-subsys_initcall(init_vdso);
-
-int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
-{
- int err;
- struct mm_struct *mm = current->mm;
-
- if (!vdso_enabled)
- return 0;
-
- down_write(&mm->mmap_sem);
-
- err = install_special_mapping(mm, um_vdso_addr, PAGE_SIZE,
- VM_READ|VM_EXEC|
- VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC|
- VM_ALWAYSDUMP,
- vdsop);
-
- up_write(&mm->mmap_sem);
-
- return err;
-}
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