Received: by 2002:a25:e74b:0:0:0:0:0 with SMTP id e72csp1193210ybh; Thu, 16 Jul 2020 05:56:44 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxU+eVhEHEcVYW3G4aQE2U5kO3WIGdOHPn27cm3USYjJIaGIuh1aqd2UtRI5LenfRd70s9l X-Received: by 2002:a17:907:1051:: with SMTP id oy17mr3754323ejb.394.1594904204620; Thu, 16 Jul 2020 05:56:44 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1594904204; cv=none; d=google.com; s=arc-20160816; b=ngKZlI4kvTcf51ZZ+jltc0IpkTOaAFfQxFl7NE1zs+DyFxNRxX9pm4MrOSau/3jw8q 8uqU/GYSbVgLvYXzxQdEaWow5yqxibwbBtnTo590Yv8AJFYvDngoZkE3KnNNXv2UVwwN /9+YW2RnTPgeVDJ3BHCDgnXQtZpSlWVkXSX1FHeda5fFfyS/IsnWMDm783PaHaUcQgdV EJuE+EOxjFZtfiFOikMr8uYhpYiX/y6BP4BEP4qd/TSfQn4D59oW9frN3M3i1dCkjOcW qOfehFx6wozAfe/OtMz6+3kThkiX98Giu3pP3LKoe423QCIAZx5u+cBOAozQp5vtO9yV a98g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:date:message-id:subject:references :in-reply-to:cc:to:from; bh=3Yduy/CjSCoXAh5njuVvTnHnqmWGpZVkDXI5lbW2vww=; b=h08Cb5S01UlwBFRFXnB/I/OaUak9QyfcTbGwL0hbxmj+LLaavejx2b0s8LW4cZfKPt U2mELuJQ080TN6JqmVkHSliCc1PzUeRhD7o96wBNJ8yFj+cEi1gqwixdT8kcw4iBXqSL C8YZkkihF1s2v4rZUJxc+2e4LwoTd1rchquZoP73x/WXqpNuHfgJiFmulE/V4trsO9Tl dYmE7ueYZAAGH6DqgltLu1ZjKg9vZMsSiOJ0QubmWd9t06np+aOVVIyf2NCXYOoA6YYP 2o73d2nSD7JXt4Zcy83F027SdyZ1CDMbLcjUJIxVj3ve80pnc6RTPJjrUeqhJ5MIdLfa L8tQ== 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 v22si2808250ejf.411.2020.07.16.05.56.21; Thu, 16 Jul 2020 05:56:44 -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 S1728673AbgGPM4C (ORCPT + 99 others); Thu, 16 Jul 2020 08:56:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33084 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726537AbgGPM4B (ORCPT ); Thu, 16 Jul 2020 08:56:01 -0400 Received: from ozlabs.org (bilbo.ozlabs.org [IPv6:2401:3900:2:1::2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0B978C061755 for ; Thu, 16 Jul 2020 05:56:01 -0700 (PDT) Received: by ozlabs.org (Postfix, from userid 1034) id 4B6vPh0ndYz9sV1; Thu, 16 Jul 2020 22:55:52 +1000 (AEST) From: Michael Ellerman To: Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , Christophe Leroy Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org In-Reply-To: <810bd8840ef990a200f58c9dea9abe767ca02a3a.1594146723.git.christophe.leroy@csgroup.eu> References: <810bd8840ef990a200f58c9dea9abe767ca02a3a.1594146723.git.christophe.leroy@csgroup.eu> Subject: Re: [PATCH] powerpc/signal64: Don't opencode page prefaulting Message-Id: <159490400694.3805857.15212813327289950599.b4-ty@ellerman.id.au> Date: Thu, 16 Jul 2020 22:55:52 +1000 (AEST) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 7 Jul 2020 18:32:25 +0000 (UTC), Christophe Leroy wrote: > Instead of doing a __get_user() from the first and last location > into a tmp var which won't be used, use fault_in_pages_readable() Applied to powerpc/next. [1/1] powerpc/signal64: Don't opencode page prefaulting https://git.kernel.org/powerpc/c/96032f983ca32ad1d43c73da922dbc7022754c3c cheers