powerpc: switch to generic sys_execve()/kernel_execve()
the only non-obvious part is that current_pt_regs() is really needed
here - task_pt_regs() is NULL for kernel threads; it's OK for ptrace
uses (the thing task_pt_regs() is intended for), but not for us.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 3b06898..6fdf044 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -1064,26 +1064,13 @@
regs, 0, NULL, NULL);
}
-int sys_execve(unsigned long a0, unsigned long a1, unsigned long a2,
- unsigned long a3, unsigned long a4, unsigned long a5,
- struct pt_regs *regs)
-{
- int error;
- char *filename;
+void __ret_from_kernel_execve(struct pt_regs *normal)
+__noreturn;
- filename = getname((const char __user *) a0);
- error = PTR_ERR(filename);
- if (IS_ERR(filename))
- goto out;
- flush_fp_to_thread(current);
- flush_altivec_to_thread(current);
- flush_spe_to_thread(current);
- error = do_execve(filename,
- (const char __user *const __user *) a1,
- (const char __user *const __user *) a2, regs);
- putname(filename);
-out:
- return error;
+void ret_from_kernel_execve(struct pt_regs *normal)
+{
+ set_thread_flag(TIF_RESTOREALL);
+ __ret_from_kernel_execve(normal);
}
static inline int valid_irq_stack(unsigned long sp, struct task_struct *p,