netdev - Re: [bpf PATCH v2 5/5] bpf, selftests: Add tests to sock

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAPhsuW4itNw2YYQ9ncgZL-m08bhwnhOE6FACNxoZVydjukc66w@mail.gmail.com>
Date:   Wed, 29 Jul 2020 14:36:57 -0700
From:   Song Liu <song@...nel.org>
To:     John Fastabend <john.fastabend@...il.com>
Cc:     Martin KaFai Lau <kafai@...com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Alexei Starovoitov <ast@...nel.org>,
        Networking <netdev@...r.kernel.org>, bpf <bpf@...r.kernel.org>
Subject: Re: [bpf PATCH v2 5/5] bpf, selftests: Add tests to sock_ops for
 loading sk

On Wed, Jul 29, 2020 at 9:26 AM John Fastabend <john.fastabend@...il.com> wrote:
>
[...]
>
> Notice it takes us an extra four instructions when src reg is the
> same as dst reg. One to save the reg, two to restore depending on
> the branch taken and a goto to jump over the second restore.
>
> Signed-off-by: John Fastabend <john.fastabend@...il.com>

Acked-by: Song Liu <songliubraving@...com>

[...]