Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Thu, 16 Jan 2020 18:18:20 +0000
From:   Will Deacon <will@kernel.org>
To:     Sami Tolvanen <samitolvanen@google.com>
Cc:     Catalin Marinas <catalin.marinas@arm.com>,
        Steven Rostedt <rostedt@goodmis.org>,
        Masami Hiramatsu <mhiramat@kernel.org>,
        Ard Biesheuvel <ard.biesheuvel@linaro.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Dave Martin <Dave.Martin@arm.com>,
        Kees Cook <keescook@chromium.org>,
        Laura Abbott <labbott@redhat.com>,
        Marc Zyngier <maz@kernel.org>,
        Nick Desaulniers <ndesaulniers@google.com>,
        Jann Horn <jannh@google.com>,
        Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>,
        Masahiro Yamada <yamada.masahiro@socionext.com>,
        clang-built-linux <clang-built-linux@googlegroups.com>,
        Kernel Hardening <kernel-hardening@lists.openwall.com>,
        linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v6 12/15] arm64: vdso: disable Shadow Call Stack
Message-ID: <20200116181820.GB22420@willie-the-truck>
References: <20191018161033.261971-1-samitolvanen@google.com>
 <20191206221351.38241-1-samitolvanen@google.com>
 <20191206221351.38241-13-samitolvanen@google.com>
 <20200116174648.GE21396@willie-the-truck>
 <CABCJKucWusLEaLyq=Dv5pWjxcUX7Q9dL=fSstwNK4eJ_6k33=w@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <CABCJKucWusLEaLyq=Dv5pWjxcUX7Q9dL=fSstwNK4eJ_6k33=w@mail.gmail.com>
User-Agent: Mutt/1.10.1 (2018-07-13)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Thu, Jan 16, 2020 at 10:14:24AM -0800, Sami Tolvanen wrote:
> On Thu, Jan 16, 2020 at 9:46 AM Will Deacon <will@kernel.org> wrote:
> > Should we be removing -ffixed-x18 too, or does that not propagate here
> > anyway?
> 
> No, we shouldn't touch -ffixed-x18 here. The vDSO is always built with
> x18 reserved since commit 98cd3c3f83fbb ("arm64: vdso: Build vDSO with
> -ffixed-x18").

Thanks, in which case:

Acked-by: Will Deacon <will@kernel.org>

Will