From mboxrd@z Thu Jan  1 00:00:00 1970
From: Szabolcs Nagy <Szabolcs.Nagy@arm.com>
Subject: Re: [RFC PATCH for 4.21 01/16] rseq/selftests: Add reference counter
 to coexist with glibc
Date: Thu, 11 Oct 2018 16:20:05 +0000
Message-ID: <3896e4f5-aab1-ae79-5360-088fd15ed380@arm.com>
References: <20181010191936.7495-1-mathieu.desnoyers@efficios.com>
 <20181010191936.7495-2-mathieu.desnoyers@efficios.com>
 <38596780-30f7-0763-0c17-7517dbf0bf59@arm.com>
 <1917048565.2402.1539270808972.JavaMail.zimbra@efficios.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <linux-kernel-owner@vger.kernel.org>
In-Reply-To: <1917048565.2402.1539270808972.JavaMail.zimbra@efficios.com>
Content-Language: en-US
Content-ID: <FC55997B59EB584AA9C8E212923066E9@eurprd08.prod.outlook.com>
Sender: linux-kernel-owner@vger.kernel.org
To: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: nd <nd@arm.com>, Peter Zijlstra <peterz@infradead.org>, "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>, Boqun Feng <boqun.feng@gmail.com>, linux-kernel <linux-kernel@vger.kernel.org>, linux-api <linux-api@vger.kernel.org>, Thomas Gleixner <tglx@linutronix.de>, Andy Lutomirski <luto@amacapital.net>, Dave Watson <davejwatson@fb.com>, Paul Turner <pjt@google.com>, Andrew Morton <akpm@linux-foundation.org>, Russell King <linux@arm.linux.org.uk>, Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>, Andi Kleen <andi@firstfloor.org>, Chris Lameter <cl@linux.com>, Ben Maurer <bmaurer@fb.com>, rostedt <rostedt@goodmis.org>, Josh Triplett <josh@joshtriplett.org>, Linus Torvalds <torvalds@linux-foundation.org>, Catalin Marinas <Catalin.Marinas@arm.com>
List-Id: linux-api@vger.kernel.org
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