Re: [PATCH 1/4] inet: Add skb_copy_datagram_iter

[David Miller]

From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Date: Sun, 9 Nov 2014 21:19:08 +0000

> 1) does sparc64 access_ok() need to differ for 32bit and 64bit tasks?

sparc64 will just fault no matter what kind of task it is.

It is impossible for a user task to generate a reference to
a kernel virtual address, as kernel and user accesses each
go via a separate address space identifier.
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