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Diffstat (limited to 'kernel/arch/x86/mm/mpx.c')
-rw-r--r--kernel/arch/x86/mm/mpx.c20
1 files changed, 1 insertions, 19 deletions
diff --git a/kernel/arch/x86/mm/mpx.c b/kernel/arch/x86/mm/mpx.c
index c439ec478..4d1c11c07 100644
--- a/kernel/arch/x86/mm/mpx.c
+++ b/kernel/arch/x86/mm/mpx.c
@@ -18,26 +18,9 @@
#include <asm/processor.h>
#include <asm/fpu-internal.h>
-static const char *mpx_mapping_name(struct vm_area_struct *vma)
-{
- return "[mpx]";
-}
-
-static struct vm_operations_struct mpx_vma_ops = {
- .name = mpx_mapping_name,
-};
-
-static int is_mpx_vma(struct vm_area_struct *vma)
-{
- return (vma->vm_ops == &mpx_vma_ops);
-}
-
/*
* This is really a simplified "vm_mmap". it only handles MPX
* bounds tables (the bounds directory is user-allocated).
- *
- * Later on, we use the vma->vm_ops to uniquely identify these
- * VMAs.
*/
static unsigned long mpx_mmap(unsigned long len)
{
@@ -83,7 +66,6 @@ static unsigned long mpx_mmap(unsigned long len)
ret = -ENOMEM;
goto out;
}
- vma->vm_ops = &mpx_vma_ops;
if (vm_flags & VM_LOCKED) {
up_write(&mm->mmap_sem);
@@ -661,7 +643,7 @@ static int zap_bt_entries(struct mm_struct *mm,
* so stop immediately and return an error. This
* probably results in a SIGSEGV.
*/
- if (!is_mpx_vma(vma))
+ if (!(vma->vm_flags & VM_MPX))
return -EINVAL;
len = min(vma->vm_end, end) - addr;