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From:   Josh Poimboeuf <jpoimboe@redhat.com>
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Subject: Re: [PATCH 1/1] x86: change default to spec_store_bypass_disable=prctl spectre_v2_user=prctl
Date:   Sat, 11 Sep 2021 19:01:40 -0700
Message-Id: <AAA2EF2C-293D-4D5B-BFA6-FF655105CD84@redhat.com>
References: <202109111411.C3D58A18EC@keescook>
Cc:     Andrea Arcangeli <aarcange@redhat.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        YiFei Zhu <zhuyifei1999@gmail.com>,
        Linux Containers <containers@lists.linux-foundation.org>,
        YiFei Zhu <yifeifz2@illinois.edu>, bpf <bpf@vger.kernel.org>,
        kernel list <linux-kernel@vger.kernel.org>,
        Aleksa Sarai <cyphar@cyphar.com>,
        Andy Lutomirski <luto@amacapital.net>,
        David Laight <David.Laight@aculab.com>,
        Dimitrios Skarlatos <dskarlat@cs.cmu.edu>,
        Giuseppe Scrivano <gscrivan@redhat.com>,
        Hubertus Franke <frankeh@us.ibm.com>,
        Jack Chen <jianyan2@illinois.edu>,
        Jann Horn <jannh@google.com>,
        Josep Torrellas <torrella@illinois.edu>,
        Tianyin Xu <tyxu@illinois.edu>,
        Tobin Feldman-Fitzthum <tobin@ibm.com>,
        Tycho Andersen <tycho@tycho.pizza>,
        Valentin Rothberg <vrothber@redhat.com>,
        Will Drewry <wad@chromium.org>, Jiri Kosina <jikos@kernel.org>,
        Waiman Long <longman@redhat.com>,
        Andi Kleen <ak@linux.intel.com>
In-Reply-To: <202109111411.C3D58A18EC@keescook>
To:     Kees Cook <keescook@chromium.org>
Precedence: bulk


> On Sep 11, 2021, at 2:13 PM, Kees Cook <keescook@chromium.org> wrote:
>=20
> =EF=BB=BFOn Wed, Nov 04, 2020 at 06:50:54PM -0500, Andrea Arcangeli wrote:=

>> Switch the kernel default of SSBD and STIBP to the ones with
>> CONFIG_SECCOMP=3Dn (i.e. spec_store_bypass_disable=3Dprctl
>> spectre_v2_user=3Dprctl) even if CONFIG_SECCOMP=3Dy.
>=20
> Hello x86 maintainers!
>=20
> I'd really like to get this landed, so I'll take this via the
> seccomp-tree unless someone else speaks up. This keeps falling off
> the edge of my TODO list. :)

Thanks!  You can add my

Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>