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 X-Spam-Level: X-Spam-Status: No, score=-11.4 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_IN_DEF_DKIM_WL autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 37ECDC33C9B for ; Mon, 6 Jan 2020 20:17:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0C406207FF for ; Mon, 6 Jan 2020 20:17:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="r8n4416R" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726912AbgAFURc (ORCPT ); Mon, 6 Jan 2020 15:17:32 -0500 Received: from mail-il1-f193.google.com ([209.85.166.193]:36754 "EHLO mail-il1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726707AbgAFURc (ORCPT ); Mon, 6 Jan 2020 15:17:32 -0500 Received: by mail-il1-f193.google.com with SMTP id b15so43662482iln.3 for ; Mon, 06 Jan 2020 12:17:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=2CX2u59yxqQEiQeQX3TdwASVbTfuTtyRiCwtCS2hV9M=; b=r8n4416RC0OjW2zQZKUoUGwBPq+fLIjkEFiWRwI2k9OC6xfH8LexxBEoS0JBAKL4ep glcWvgtALerSfVE7MX3hVQsEzoDEMEvdBi2XV5OuFjQ/+rHFaGLv0Y6TVIKJeGE2K4xr hPGAu2ZsOO47P84w3U2lb5Pq6FkNZ97fG315dOqz+ZHZ92dKtbrauczGHZ4UiFER5Qzw tvRcP0oEPyL8O/VjBoyZq1h3n8jcz936VNWZIW7jJO35SZiO6p4mFIjXs27PSe3mz4hr vLfja4o0UrgiZvGv7Wem6QD7qJ7tYB3zq9tgK/CX8e77skiBewq9ETOr5AZrOs8zMWm2 1CWQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=2CX2u59yxqQEiQeQX3TdwASVbTfuTtyRiCwtCS2hV9M=; b=fgIavtq3SshKRa7FiwedoitjuA1RxJSFAVUU/xylbNLQUIK+mZ2eb83g9tudRtCT0A Jpkgk5cAzAes0l2lt5UVrNSc/meoGU5h95r18f3sASCBDbUbSdpUElRPJKc7bAZrn/bO gHzMerLs6tX1ET0QKMMIhV5dd7oesZ/bPH7zJr/HV/QU5fodIN0CERWlGZFM3cmzGe3a tjZL4pvzz6IwHfZicSrrMqN/lo4S8qWuPp2sHg0hPW26a0HXKngTcwmiToNweY3EWXnW jC4zb3zTQBnOTq/Nm6W/VvspKeckBlVPjOWpzgkR94h2URuS+EAy/kQH/WxlRgkgQ9hi gFhg== X-Gm-Message-State: APjAAAWAPRE0QgBVCSLbBw55LQOGD551tAacq2ReXtAz5NN14YJPD+Ow AqIqlILe3abX6OQwe/SvJ3wiLouVN00iSyLDmsnVNQ== X-Google-Smtp-Source: APXvYqyReQmw36zPln5QfGWBGVhIpVbv13BJN1T5wbGPlk3lk3Azd0+w4PYXRQmNj1E1SHsoTt2laBhaYWd3jSRwsW4= X-Received: by 2002:a92:8458:: with SMTP id l85mr88666783ild.296.1578341851389; Mon, 06 Jan 2020 12:17:31 -0800 (PST) MIME-Version: 1.0 References: <20191211204753.242298-1-pomonis@google.com> <20191211204753.242298-5-pomonis@google.com> In-Reply-To: <20191211204753.242298-5-pomonis@google.com> From: Jim Mattson Date: Mon, 6 Jan 2020 12:17:20 -0800 Message-ID: Subject: Re: [PATCH v2 04/13] KVM: x86: Protect ioapic_read_indirect() from Spectre-v1/L1TF attacks To: Marios Pomonis Cc: Paolo Bonzini , =?UTF-8?B?UmFkaW0gS3LEjW3DocWZ?= , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Joerg Roedel , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , "the arch/x86 maintainers" , kvm list , LKML , Nick Finco , Andrew Honig , stable@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Dec 11, 2019 at 12:48 PM Marios Pomonis wrote: > > This fixes a Spectre-v1/L1TF vulnerability in ioapic_read_indirect(). > This function contains index computations based on the > (attacker-controlled) IOREGSEL register. > > Fixes: commit a2c118bfab8b ("KVM: Fix bounds checking in ioapic indirect register reads (CVE-2013-1798)") > > Signed-off-by: Nick Finco > Signed-off-by: Marios Pomonis > Reviewed-by: Andrew Honig > Cc: stable@vger.kernel.org Reviewed-by: Jim Mattson