From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH 18/18] arm64: lto: Strengthen READ_ONCE() to acquire when
 CLANG_LTO=y
Date: Wed, 8 Jul 2020 11:16:20 +0200
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To: Nick Desaulniers <ndesaulniers@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>, "Michael S. Tsirkin" <mst@redhat.com>, Catalin Marinas <catalin.marinas@arm.com>, virtualization@lists.linux-foundation.org, Will Deacon <will@kernel.org>, Arnd Bergmann <arnd@arndb.de>, Alan Stern <stern@rowland.harvard.edu>, Sami Tolvanen <samitolvanen@google.com>, Matt Turner <mattst88@gmail.com>, kernel-team <kernel-team@android.com>, Dave Martin <Dave.Martin@arm.com>, Marco Elver <elver@google.com>, Kees Cook <keescook@chromium.org>, "Paul E. McKenney" <paulmck@kernel.org>, Boqun Feng <boqun.feng@gmail.com>, Josh Triplett <josh@joshtriplett.org>, Steven Rostedt <rostedt@goodmis.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
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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.