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 0CB4AEC8748 for ; Sun, 10 Sep 2023 08:58:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244640AbjIJI6m (ORCPT ); Sun, 10 Sep 2023 04:58:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60900 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239084AbjIJI6l (ORCPT ); Sun, 10 Sep 2023 04:58:41 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F024B1B5; Sun, 10 Sep 2023 01:58:36 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A56C4C433C7; Sun, 10 Sep 2023 08:58:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1694336316; bh=ie3mkzGb78frh1QxUYvyoQn4GH0ST3RCcUoT31fNuUk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=dtepG0xn8dCUF6d/nvOR4p1KA2z2RoXleNgidaXdsI9NMFCQI2q0CfrdT8VA/xygA m9gdZoMzTl7LlfrvfDZn6IxiU6Z84Y/BqBFsUPlsu0QWk5zOpwIhLbNJNPd1yrYzr2 5k7/NNn7whYrqyhR1WWdaINPnEJEnlj69/XbcRYYcrLpaGrnuh18sYNheT5vmRdjM7 cUcFoumVx1hEASilEz09Br0aei9/BXf8xgSxmpfUnHESm2+yiSSEwFeT5AhDSpyqmX 7jW3wC4u+YKTQdvs/mFwr44+sYiPOYiubMpijZThv68+ydMS+N0VFyZl1GyC0crQc8 NhSBcQJFlrsGw== Date: Sun, 10 Sep 2023 09:58:28 +0100 From: Conor Dooley To: guoren@kernel.org Cc: paul.walmsley@sifive.com, anup@brainfault.org, peterz@infradead.org, mingo@redhat.com, will@kernel.org, palmer@rivosinc.com, longman@redhat.com, boqun.feng@gmail.com, tglx@linutronix.de, paulmck@kernel.org, rostedt@goodmis.org, rdunlap@infradead.org, catalin.marinas@arm.com, conor.dooley@microchip.com, xiaoguang.xing@sophgo.com, bjorn@rivosinc.com, alexghiti@rivosinc.com, keescook@chromium.org, greentime.hu@sifive.com, ajones@ventanamicro.com, jszhang@kernel.org, wefu@redhat.com, wuwei2016@iscas.ac.cn, leobras@redhat.com, linux-arch@vger.kernel.org, linux-riscv@lists.infradead.org, linux-doc@vger.kernel.org, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-csky@vger.kernel.org, Guo Ren Subject: Re: [PATCH V11 00/17] riscv: Add Native/Paravirt qspinlock support Message-ID: <20230910-esteemed-exodus-706aaae940b1@spud> References: <20230910082911.3378782-1-guoren@kernel.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="ORxaGwMyxaL8VJte" Content-Disposition: inline In-Reply-To: <20230910082911.3378782-1-guoren@kernel.org> Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org --ORxaGwMyxaL8VJte Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Sun, Sep 10, 2023 at 04:28:54AM -0400, guoren@kernel.org wrote: > Changlog: > V11: > - Based on Leonardo Bras's cmpxchg_small patches v5. > - Based on Guo Ren's Optimize arch_spin_value_unlocked patch v3. > - Remove abusing alternative framework and use jump_label instead. btw, I didn't say that using alternatives was the problem, it was abusing the errata framework to perform feature detection that I had a problem with. That's not changed in v11. A stronger forward progress guarantee is not an erratum, AFAICT. > - Introduce prefetch.w to improve T-HEAD processors' LR/SC forward progress > guarantee. > - Optimize qspinlock xchg_tail when NR_CPUS >= 16K. --ORxaGwMyxaL8VJte Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRh246EGq/8RLhDjO14tDGHoIJi0gUCZP2FNAAKCRB4tDGHoIJi 0vtHAQDkzGM0Ps4GL3DcCukAmWgFu5NhrG8JrAccsQivkfwJiQD/VS20Hau/Evtj 7e/AK20nyAL4aPqBlnjOO0LuZ9X5mQI= =80fi -----END PGP SIGNATURE----- --ORxaGwMyxaL8VJte--