Received: by 2002:a05:6a10:206:0:0:0:0 with SMTP id 6csp2524174pxj; Sun, 6 Jun 2021 05:14:10 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyjHgkvxRU2OHT+Laxs2e1/fKXrgnRmIXAXw49SqcyMtRl+DdTAF6+9aKW/5ocAcI2LgFUG X-Received: by 2002:a17:906:c9d8:: with SMTP id hk24mr13455703ejb.480.1622981649907; Sun, 06 Jun 2021 05:14:09 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1622981649; cv=none; d=google.com; s=arc-20160816; b=KqxdOeFhL1FUhN8h3xmwvizjIOlninzPsFFo/w4c+mfqc0FqAVoymxcmOgZaftBpBE YX/PFKf9AJzooTG/Yomzw+y/fqUOuIzFiG/LYu9zCTHacJ+71i2m5qWUZE9aeomQE7sC AGMmOFddmLyhCd7Snkt/lh1TlwCGW/TpKx06eLpYggiUwGWUmqw6vxtLgUDbEsZ8y7Gg 7IPyrc+bHlzlJBvFAJkcwhQQZS2ruFOyXHheMyWgumAMDXQbmYHlsRJMQ/Mx8dvGrs67 lELUdKQNKNfBc6ShH08G0lzqGQ0+DxK+FSnT8EwUgubAQlSk7mqWb5PerN4bHTP9L3tZ QcvQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version:date :message-id:subject:references:in-reply-to:cc:to:from; bh=BFye6Ktu+uXJZwce4Zt3uEstOLWToDmL207OPRv1WVA=; b=CukNsAVFpCgM2iW2NiHStwp8Paachd5+7upLbeW9XytUwjN1jS+BgChETOm8uBN7YI 0e9hz3YFFAgD2gn1ao98tjzmrwq/PlbpgHI6Y+hPyLHpnXchMMykIsrz6gIy/OHgnbuN dNf2xYtgabJCfqyxdQEt2JJ6HxhXQFTgdM7vwCeFIonV2m1A+XMIsTeGY25TmFDR3GiQ wrPiCn+vUSzVaNvGQv4J8yBJ4LoO/8QgWnY/RjXFvIX1QoGjP7UoLJn9LWfQ/qHXA6JT gocQA85HsbioOGHKSTN9U9uE6xQleH+Pt4WBFhEk1nZ8tBRVsIFhkz8MOkNrQlxMr6gV +cgw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id 23si8906781ejx.297.2021.06.06.05.13.47; Sun, 06 Jun 2021 05:14:09 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230227AbhFFMOA (ORCPT + 99 others); Sun, 6 Jun 2021 08:14:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48798 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230175AbhFFMNz (ORCPT ); Sun, 6 Jun 2021 08:13:55 -0400 Received: from ozlabs.org (bilbo.ozlabs.org [IPv6:2401:3900:2:1::2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 30A60C061766 for ; Sun, 6 Jun 2021 05:12:06 -0700 (PDT) Received: by ozlabs.org (Postfix, from userid 1034) id 4Fyb3757PQz9sWD; Sun, 6 Jun 2021 22:12:03 +1000 (AEST) From: Michael Ellerman To: Benjamin Herrenschmidt , Christophe Leroy , Michael Ellerman , Paul Mackerras Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org In-Reply-To: <848f18d213b8341939add7302dc4ef80cc7a12e3.1620307636.git.christophe.leroy@csgroup.eu> References: <848f18d213b8341939add7302dc4ef80cc7a12e3.1620307636.git.christophe.leroy@csgroup.eu> Subject: Re: [PATCH] powerpc/32s: Speed up likely path of kuap_update_sr() Message-Id: <162298131688.2353459.37331133206133649.b4-ty@ellerman.id.au> Date: Sun, 06 Jun 2021 22:08:36 +1000 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 6 May 2021 13:27:31 +0000 (UTC), Christophe Leroy wrote: > In most cases, kuap_update_sr() will update a single segment > register. > > We know that first update will always be done, if there is no > segment register to update at all, kuap_update_sr() is not > called. > > [...] Applied to powerpc/next. [1/1] powerpc/32s: Speed up likely path of kuap_update_sr() https://git.kernel.org/powerpc/c/8af8d72dc58e90dc945ca627b24968400e0f21b6 cheers