Received: by 2002:a05:6a10:22f:0:0:0:0 with SMTP id 15csp110520pxk; Tue, 22 Sep 2020 20:42:56 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzlECF4zHi6IV/2YZOWzHkX4iDFqoHGUCUT8p5/6VBFaTOvHeuxKsOvHUUMwyIt5Uxvj2vq X-Received: by 2002:a50:d61e:: with SMTP id x30mr7430687edi.70.1600832576135; Tue, 22 Sep 2020 20:42:56 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1600832576; cv=none; d=google.com; s=arc-20160816; b=ULoMv2q5cHBKXbpgHHA73aipbW8/VR1qyOvTe0TGVzaYWdNw2TjBrgj4yn9qdLTdvb RE9cDeb2v5/jYFEyUnWHbWMC7SO1uX74ftMj7cOXIGsWlu//pdVC8vvoIzAPeD6egCFp xS90BK3vOihZ/Z+KuTZwMgVl6s5XN23GNp8TiDKxGrVJxV3++zpIaOeqm/g7YkqUpkEZ AUvCwnx/IC+Uyo4ZzwCbgtzt4oLd20WGst4pNGZvqXfkynwYjw/QrDgwifpIAfNawbeq LUoFiN0udvduksuNvDe7IzsyRHRCcyjUQxhE0t3yLPp0jX/CoRq44S3zXEpWjT+Ui+j7 6nGQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date; bh=jJ5q4eB+3JB0YTvWkt9IthLylfDyHoP7xnLL1vZWf/E=; b=AkSdciif7SIgMVpIgcYs7Y5oKxNse0JWpmnnG+6Gvefw6zV3k38IklKy/l5uZFzvr+ rT6h3f5WnO3yuNEJzOfDaePrBim1WgP2NVC6ax6EtslqnD7tN9Op77ldjTZrZ8I1OTpL qFVrPvf0pq1WivQ1dZYE/srHdzMVpz7IRCLt+sjYEF3aeLSNIbcQaKP5DY701Ygz8AvP 7RSjmOoJeOXQI1RVOit9bRZUudJIdz3sKBWj9B0KyZ1stcERMK5Ziqq8XebB8fAZu6CB 4S5lzuyWf76+Btf3D9bXSvaVMwlhq8VzR1ZQ9YZJ/BRswav+EnRRfR2o14qFBugQNDfi EJxQ== 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 y12si11655738edv.98.2020.09.22.20.42.32; Tue, 22 Sep 2020 20:42:56 -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 S1726831AbgIWDi4 (ORCPT + 99 others); Tue, 22 Sep 2020 23:38:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46378 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726786AbgIWDi4 (ORCPT ); Tue, 22 Sep 2020 23:38:56 -0400 Received: from ZenIV.linux.org.uk (zeniv.linux.org.uk [IPv6:2002:c35c:fd02::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 01E7DC061755 for ; Tue, 22 Sep 2020 20:38:56 -0700 (PDT) Received: from viro by ZenIV.linux.org.uk with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kKvcG-004Gil-QP; Wed, 23 Sep 2020 03:38:48 +0000 Date: Wed, 23 Sep 2020 04:38:48 +0100 From: Al Viro To: Josh Poimboeuf Cc: x86@kernel.org, linux-kernel@vger.kernel.org, Linus Torvalds , Will Deacon , Dan Williams , Andrea Arcangeli , Waiman Long , Peter Zijlstra , Thomas Gleixner , Andrew Cooper , Andy Lutomirski , Christoph Hellwig , David Laight , Mark Rutland Subject: Re: [PATCH v3] x86/uaccess: Use pointer masking to limit uaccess speculation Message-ID: <20200923033848.GD3421308@ZenIV.linux.org.uk> References: <1d06ed6485b66b9f674900368b63d7ef79f666ca.1599756789.git.jpoimboe@redhat.com> <20200914195354.yghlqlwtqz7mqteb@treble> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200914195354.yghlqlwtqz7mqteb@treble> Sender: Al Viro Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Sep 14, 2020 at 02:53:54PM -0500, Josh Poimboeuf wrote: > Al, > > This depends on Christoph's set_fs() removal patches. Would you be > willing to take this in your tree? in #uaccess.x86 and #for-next