203 static void do_sys_vm86(struct kernel_vm86_struct *info, struct task_struct *tsk);
212 	struct task_struct *tsk = current;  in SYSCALL_DEFINE1()  local
215 	if (tsk->thread.saved_sp0)  in SYSCALL_DEFINE1()
224 	tsk->thread.vm86_info = v86;  in SYSCALL_DEFINE1()
225 	do_sys_vm86(&info, tsk);  in SYSCALL_DEFINE1()
237 	struct task_struct *tsk;  in SYSCALL_DEFINE2()  local
241 	tsk = current;  in SYSCALL_DEFINE2()
259 	if (tsk->thread.saved_sp0)  in SYSCALL_DEFINE2()
269 	tsk->thread.vm86_info = (struct vm86_struct __user *)v86;  in SYSCALL_DEFINE2()
270 	do_sys_vm86(&info, tsk);  in SYSCALL_DEFINE2()
275 static void do_sys_vm86(struct kernel_vm86_struct *info, struct task_struct *tsk)  in do_sys_vm86()  argument
300 		tsk->thread.v86mask = 0;  in do_sys_vm86()
303 		tsk->thread.v86mask = X86_EFLAGS_NT | X86_EFLAGS_IOPL;  in do_sys_vm86()
306 		tsk->thread.v86mask = X86_EFLAGS_AC | X86_EFLAGS_NT | X86_EFLAGS_IOPL;  in do_sys_vm86()
309 		tsk->thread.v86mask = X86_EFLAGS_ID | X86_EFLAGS_AC | X86_EFLAGS_NT | X86_EFLAGS_IOPL;  in do_sys_vm86()
317 	tsk->thread.saved_sp0 = tsk->thread.sp0;  in do_sys_vm86()
318 	tsk->thread.saved_fs = info->regs32->fs;  in do_sys_vm86()
319 	tsk->thread.saved_gs = get_user_gs(info->regs32);  in do_sys_vm86()
322 	tsk->thread.sp0 = (unsigned long) &info->VM86_TSS_ESP0;  in do_sys_vm86()
324 		tsk->thread.sysenter_cs = 0;  in do_sys_vm86()
325 	load_sp0(tss, &tsk->thread);  in do_sys_vm86()
328 	tsk->thread.screen_bitmap = info->screen_bitmap;  in do_sys_vm86()
330 		mark_screen_rdonly(tsk->mm);  in do_sys_vm86()
346 		:"r" (&info->regs), "r" (task_thread_info(tsk)), "r" (0));  in do_sys_vm86()
731 	struct task_struct *tsk;  member
749 	if ((irqbits & irq_bit) || !vm86_irqs[intno].tsk)  in irq_handler()
753 		send_sig(vm86_irqs[intno].sig, vm86_irqs[intno].tsk, 1);  in irq_handler()
772 	vm86_irqs[irqnumber].tsk = NULL;  in free_vm86_irq()
783 	    if (vm86_irqs[i].tsk == task)  in release_vm86_irqs()
794 	if (vm86_irqs[irqnumber].tsk != current) return 0;  in get_and_reset_irq()
824 			if (vm86_irqs[irq].tsk) return -EPERM;  in do_vm86_irq_handling()
828 			vm86_irqs[irq].tsk = current;  in do_vm86_irq_handling()
833 			if (!vm86_irqs[irqnumber].tsk) return 0;  in do_vm86_irq_handling()
834 			if (vm86_irqs[irqnumber].tsk != current) return -EPERM;  in do_vm86_irq_handling()