netdev - Re: clean up and streamline probe_kernel

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Message-ID: <CAHk-=wghd2efrE_DoJaC7nTkpCC1gPGp+xbNY7KWOE-7sa4h0Q@mail.gmail.com>
Date:   Wed, 13 May 2020 12:37:12 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Christoph Hellwig <hch@....de>
Cc:     "the arch/x86 maintainers" <x86@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-parisc@...r.kernel.org,
        linux-um <linux-um@...ts.infradead.org>,
        Netdev <netdev@...r.kernel.org>, bpf@...r.kernel.org,
        Linux-MM <linux-mm@...ck.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: clean up and streamline probe_kernel_* and friends v2

On Wed, May 13, 2020 at 9:00 AM Christoph Hellwig <hch@....de> wrote:
>
> this series start cleaning up the safe kernel and user memory probing
> helpers in mm/maccess.c, and then allows architectures to implement
> the kernel probing without overriding the address space limit and
> temporarily allowing access to user memory.  It then switches x86
> over to this new mechanism by reusing the unsafe_* uaccess logic.

Ok, I think I found a bug, and I had one more suggestion, but other
than the two emails I sent this all looks like an improvement to me.

                 Linus