extern void show_regs(struct pt_regs * regs);
extern int map_syscall32(struct mm_struct *mm, unsigned long address);
extern void show_regs(struct pt_regs * regs);
extern int map_syscall32(struct mm_struct *mm, unsigned long address);
extern int iommu_aperture;
extern int iommu_aperture_disabled;
extern int iommu_aperture_allowed;
extern int iommu_aperture;
extern int iommu_aperture_disabled;
extern int iommu_aperture_allowed;