Commit 975e5f45 authored May 06, 2009 by Samuel Bronson Committed by H. Peter Anvin May 06, 2009

x86: use symbolic name for VM86_SIGNAL when used as vm86 default return



This code has apparently used "0" and not VM86_SIGNAL since Linux
1.1.9, when Linus added VM86_SIGNAL to vm86.h. This patch changes the
code to use the symbolic name.

The magic 0 tripped me up in trying to extend the vm86(2) manpage to
actually explain vm86()'s interface -- my greps for VM86_SIGNAL came up
fruitless.

[ Impact: cleanup; no object code change ]

Signed-off-by: Samuel Bronson <naesten@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

parent bf293c17

arch/x86/kernel/vm86_32.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -318,9 +318,9 @@ static void do_sys_vm86(struct kernel_vm86_struct info, struct task_struct tsk
		}

		/*
		* Save old state, set default return value (%ax) to 0
		* Save old state, set default return value (%ax) to 0 (VM86_SIGNAL)
		*/
		info->regs32->ax = 0;
		info->regs32->ax = VM86_SIGNAL;
		tsk->thread.saved_sp0 = tsk->thread.sp0;
		tsk->thread.saved_fs = info->regs32->fs;
		tsk->thread.saved_gs = get_user_gs(info->regs32);