From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2BACEC433F5 for ; Wed, 12 Jan 2022 00:42:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343968AbiALAmu (ORCPT ); Tue, 11 Jan 2022 19:42:50 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59204 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343866AbiALAmu (ORCPT ); Tue, 11 Jan 2022 19:42:50 -0500 Received: from mail-pl1-x634.google.com (mail-pl1-x634.google.com [IPv6:2607:f8b0:4864:20::634]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 017FFC06173F for ; Tue, 11 Jan 2022 16:42:50 -0800 (PST) Received: by mail-pl1-x634.google.com with SMTP id x15so1568047plg.1 for ; Tue, 11 Jan 2022 16:42:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=date:from:subject:to:cc:references:in-reply-to:mime-version :message-id:content-transfer-encoding; bh=nPA/d9GpVAzZlRMdpQ0UK1uHKNH4tM81MZUNkRzDgiQ=; b=UESrMGVEIjHiAAuGVWaBatN7/caiK0qTuvYSfayFaTpOQj1aGJT1tk6mlU3bMSTEd+ KJ7FUFf/Wt5H+Cl9uZwTZPbYbVhst8fco0ylvCpkprofj3Yjyq7/3/FhEPhMi81OMtOl vhEERYI0q2qz4QFxiNr72YrBfUloXrXDX14s8P3c2v9SzxaPs1GFNXdcJCWFwQNblgqU KNJ17NGZsGV6Y4WGamllapmKiWnMRmCOOGGfaZD5LvTeCAr+YLZ1xJTHBXtnaSJ9nilj /GZkfhTcPoajKlf12nk7ySnPcZX5wuNsMj+ZSGNPKyMjM5bn7x3agxN0SOR/zXateqJL 8elQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:subject:to:cc:references:in-reply-to :mime-version:message-id:content-transfer-encoding; bh=nPA/d9GpVAzZlRMdpQ0UK1uHKNH4tM81MZUNkRzDgiQ=; b=HWysfXXs7bVvWNZuI0KBVfj6HcRUHqZrwR+wqgyF30AMl0DZq0nqrVHpI6tC3zFekb ohLedp6M+kKCW5Q2EYSwtQFPmnI8UM+B509X9qgWeknAdWlZ5DsdoVDuzSU71roJt/GR pdiMcF6k2HVwiZfd8VtpoYGI0R+gQ+Ar1CQKNsrrSAOVJn6AdX3aRM9wWae4ru41B63Y 8u+cTYxgjbwfbT51A5JkJbgAtwAAIUn9Wr0QH8guQ8UPpHtNA31Ch6GAC63yHLHCJAhc I3USxfSBVHPUH5AsXwOaQST/ig27Eg6GBlVtBFB8xiS0YqL5X/5UOG0daAu0WCyZKg4n 73GQ== X-Gm-Message-State: AOAM5306WPB71io0y4bljOpD+Tx6MOgTbPjQkAbmBUv5KyQT5s7F2tgL kTW73VfkFxA/0rFCwjI2Aqo= X-Google-Smtp-Source: ABdhPJxQqkIW1AimBLkPfmP6lPZ1FBO91GZeJ8nhYStZe8weK5PPHBxLDYb6JWLtsuKp9CU5jB8IVw== X-Received: by 2002:a63:ae45:: with SMTP id e5mr6295310pgp.476.1641948169473; Tue, 11 Jan 2022 16:42:49 -0800 (PST) Received: from localhost (124-171-74-95.tpgi.com.au. [124.171.74.95]) by smtp.gmail.com with ESMTPSA id z31sm461361pgl.10.2022.01.11.16.42.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Jan 2022 16:42:49 -0800 (PST) Date: Wed, 12 Jan 2022 10:42:43 +1000 From: Nicholas Piggin Subject: Re: [PATCH 16/23] sched: Use lightweight hazard pointers to grab lazy mms To: Andy Lutomirski , Linus Torvalds Cc: Andrew Morton , Anton Blanchard , Benjamin Herrenschmidt , Catalin Marinas , Dave Hansen , linux-arch , Linux-MM , Mathieu Desnoyers , Nadav Amit , Paul Mackerras , "Peter Zijlstra (Intel)" , Randy Dunlap , Rik van Riel , Will Deacon , the arch/x86 maintainers References: <7c9c388c388df8e88bb5d14828053ac0cb11cf69.1641659630.git.luto@kernel.org> <3586aa63-2dd2-4569-b9b9-f51080962ff2@www.fastmail.com> <430e3db1-693f-4d46-bebf-0a953fe6c2fc@www.fastmail.com> <484a7f37-ceed-44f6-8629-0e67a0860dc8@www.fastmail.com> <1641790309.2vqc26hwm3.astroid@bobo.none> <0d905aef-f53c-4102-931f-a22edd084fae@www.fastmail.com> <1641867901.xve7qy78q6.astroid@bobo.none> <1641939251.s7ciy8cys4.astroid@bobo.none> In-Reply-To: <1641939251.s7ciy8cys4.astroid@bobo.none> MIME-Version: 1.0 Message-Id: <1641946506.hgz759d78c.astroid@bobo.none> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-arch@vger.kernel.org Excerpts from Nicholas Piggin's message of January 12, 2022 8:48 am: > Anyway I will try to take a look over and review bits I can before the > 5.18 merge window. For 5.17 my series has been ready to go for a year or > so and very small so let's merge that first since Linus wants to try go > with that approach rather than the refcount one. 5.19 and 5.18 respectively. Thanks, Nick