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Date:   Wed, 8 Jul 2020 11:16:20 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Nick Desaulniers <ndesaulniers@google.com>
Cc:     "Paul E. McKenney" <paulmck@kernel.org>,
        Dave Martin <Dave.Martin@arm.com>,
        Will Deacon <will@kernel.org>,
        Sami Tolvanen <samitolvanen@google.com>,
        Marco Elver <elver@google.com>,
        Mark Rutland <mark.rutland@arm.com>,
        "Michael S. Tsirkin" <mst@redhat.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Jason Wang <jasowang@redhat.com>,
        virtualization@lists.linux-foundation.org,
        Alan Stern <stern@rowland.harvard.edu>,
        Matt Turner <mattst88@gmail.com>,
        kernel-team <kernel-team@android.com>,
        Kees Cook <keescook@chromium.org>,
        Arnd Bergmann <arnd@arndb.de>,
        Boqun Feng <boqun.feng@gmail.com>,
        Josh Triplett <josh@joshtriplett.org>,
        Ivan Kokshaysky <ink@jurassic.park.msu.ru>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        Richard Henderson <rth@twiddle.net>,
        LKML <linux-kernel@vger.kernel.org>, linux-alpha@vger.kernel.org,
        Steven Rostedt <rostedt@goodmis.org>
Subject: Re: [PATCH 18/18] arm64: lto: Strengthen READ_ONCE() to acquire when
 CLANG_LTO=y
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On Tue, Jul 07, 2020 at 04:01:28PM -0700, Nick Desaulniers wrote:
> I'm trying to put together a Micro Conference for Linux Plumbers
> conference focused on "make LLVM slightly less shitty."  Do you all
> plan on attending the conference? Would it be worthwhile to hold a
> session focused on discussing this (LTO and memory models) be
> worthwhile?

I'd love to have a session about compilers and memory ordering with both
GCC and CLANG in attendance.

We need a solution for dependent-loads and control-dependencies for both
toolchains.