Received: by 2002:a25:6193:0:0:0:0:0 with SMTP id v141csp902577ybb; Fri, 20 Mar 2020 09:57:01 -0700 (PDT) X-Google-Smtp-Source: ADFU+vvhqK/1oNam8kcYnezTtNgA/4Z9yRZx/4jPnZdMPVIpSorpvJj3Pzre95MUTOXOzx9LjsB/ X-Received: by 2002:a9d:372:: with SMTP id 105mr7354146otv.15.1584723420985; Fri, 20 Mar 2020 09:57:00 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1584723420; cv=none; d=google.com; s=arc-20160816; b=c4xX9V3JarTZVE9LkP94qFp4Ul32Fy0OclQgWunwzXEJPUQrFGTHYmHL8JVLpRY4wW lAStaGLpLzIeRj7wBhjKGd4/nLeEXVIh5b0KoA6vhsKIRnAv7V4diMMnyxNvNkWkTFeR ts/RC0iijZcigdVxJ1bn24alKNOFgtmxXoQQbPNmMWjKf66tf8Q7FPgQcRyaHhPnIm8F i4eVPWtSxeP61BjvOJPXDtpNyuRGZOHXFsoAJwLQaFpi7/UuqOIyCA/9X0jMoh5WtqgI 2ipj9IvUKGYKQ8aUtHc6krdUtfyiuos0aAMCCyG27Vj2tZ6054/Bcjw3P8XtkYzyGe9v qOzA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-transfer-encoding:content-disposition:mime-version :references:message-id:subject:cc:to:from:date; bh=mjWrh2cjwKwWSGDb/tKoIiT4civTWCt12jqnHIRJza4=; b=qh2E+17qFBe3qWP3pc72aUTjcT/Msmi0eG77JiR57INJ3L+lXTIDoM1JTDB/tHgDFv ZAnDW3VGjmYir9JQOonYd9RluW667NhYQluLCOdL+Th4CQHAHBM+4jiyQZYgG31CumTs tlbVZGThe7V7F3Oc5sFplqJr/LAP9d5LG0oZBfKGBKNe0Olx5WTYQMNfOgPRYE+J4K2a 7y2RBd7vulyPU7aA+vGLgk/a7WV557fUnN4ZYZJAH4pqjClCRu6rNIk1jIa1ETq0Yr6v dSUxmvnZKI+gk1+svQ6b33dAFGdz+DP6jrwu2yzzgBx/i74FF0eAuw1QRJEeRYWj3s+2 wu6g== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id v15si3528781oth.307.2020.03.20.09.56.44; Fri, 20 Mar 2020 09:57:00 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727576AbgCTQys (ORCPT + 99 others); Fri, 20 Mar 2020 12:54:48 -0400 Received: from foss.arm.com ([217.140.110.172]:53986 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726983AbgCTQys (ORCPT ); Fri, 20 Mar 2020 12:54:48 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 214C51FB; Fri, 20 Mar 2020 09:54:48 -0700 (PDT) Received: from mbp (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 2D2403F305; Fri, 20 Mar 2020 09:54:47 -0700 (PDT) Date: Fri, 20 Mar 2020 16:54:44 +0000 From: Catalin Marinas To: =?iso-8859-1?Q?R=E9mi?= Denis-Courmont Cc: Will Deacon , linux-arm-kernel@lists.infradead.org, Mark Rutland , James Morse , linux-kernel@vger.kernel.org Subject: Re: [PATCHv3 0/3] clean up KPTI / SDEI trampoline data alignment Message-ID: <20200320165159.GB7448@mbp> References: <1938400.7m7sAWtiY1@basile.remlab.net> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1938400.7m7sAWtiY1@basile.remlab.net> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Mar 19, 2020 at 11:12:56AM +0200, R?mi Denis-Courmont wrote: > Hi, > > The KPTI and SDE trampolines each load a pointer from the same fixmap data > page. This reduces the data alignment to the useful value, and tries to > clarify the assembler code. > > Changes since v2: > - Retain alignment even when SDEI is disabled to keep ld happy. I queued v2. Thanks. -- Catalin