powerpc: don't bother with zero-extending arguments in sys_clone() (9d401279) · Commits · 戴 / test

arch/powerpc/kernel/process.c

+0 −8

Original line number	Diff line number	Diff line
		@@ -1025,8 +1025,6 @@ int get_unalign_ctl(struct task_struct *tsk, unsigned long adr)
		return put_user(tsk->thread.align_ctl, (unsigned int __user *)adr);
		}

		#define TRUNC_PTR(x) ((typeof(x))(((unsigned long)(x)) & 0xffffffff))

		int sys_clone(unsigned long clone_flags, unsigned long usp,
		int __user parent_tidp, void __user child_threadptr,
		int __user *child_tidp, int p6,
		@@ -1035,12 +1033,6 @@ int sys_clone(unsigned long clone_flags, unsigned long usp,
		CHECK_FULL_REGS(regs);
		if (usp == 0)
		usp = regs->gpr[1]; /* stack pointer for child */
		#ifdef CONFIG_PPC64
		if (is_32bit_task()) {
		parent_tidp = TRUNC_PTR(parent_tidp);
		child_tidp = TRUNC_PTR(child_tidp);
		}
		#endif
		return do_fork(clone_flags, usp, regs, 0, parent_tidp, child_tidp);
		}