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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 44A90C433EF for ; Wed, 16 Mar 2022 02:37:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352344AbiCPCic (ORCPT ); Tue, 15 Mar 2022 22:38:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51990 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236042AbiCPCia (ORCPT ); Tue, 15 Mar 2022 22:38:30 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id E0B2148E63 for ; Tue, 15 Mar 2022 19:37:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1647398236; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=bvE1D2NOSQG7Tkh9PJFE2DBIbgp7cnI0DFfAn6V8XKk=; b=dS7KoirzfchIxQXMH/S2ooCSSOuDa2KNJdJNNRbLP41/k6p5MqQcYHsg9J2VcN5wDmUyHw LnSBtYl6p5jFst2oQNXUMjD+/zO5WuQ1aLEEWPzVnsqDkBXuo2+mD6OYxzdFgMGgKr/4C8 pwe/PvVio7hueBXOVLQWvFLgxofgKg8= Received: from mail-ot1-f72.google.com (mail-ot1-f72.google.com [209.85.210.72]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-495-2ebCGsi2M_KTjaePrARf3Q-1; Tue, 15 Mar 2022 22:37:14 -0400 X-MC-Unique: 2ebCGsi2M_KTjaePrARf3Q-1 Received: by mail-ot1-f72.google.com with SMTP id c1-20020a9d67c1000000b005b2353e2c03so464680otn.8 for ; Tue, 15 Mar 2022 19:37:14 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=bvE1D2NOSQG7Tkh9PJFE2DBIbgp7cnI0DFfAn6V8XKk=; b=UhN1s1JAH/pjJN4l4s/sLxiaqIFIu1/SIGAfggPHFbgdnW0vyZObdsXhIV/0j4JJJi W7WSRz6sCLGU089+qJ5Bqzzu7vn3PVBO0g+x9S3akQ6u0VRKfLE6B171X9JzuxrMPk7+ Uo3ZlTE/npQxlKkR6mxnSHNTnkyqZsebz6eHnPgooUltZg869yAJ6vv0CO6eBgJbsEdN H7xfIvDhK7mZpIpOk+xSCuvksVLqc7RrKkman17e6irLU3NWXngM2x5S/h7aG/7LGycq WA8YQV1M+tD22NKvBaOzwy/LUsf2w+HNMo/4t19ioHAPgaGojTVK5hu9rn7VdJORJi0Y BhWQ== X-Gm-Message-State: AOAM533+mVUg5wmJa+/iKtlnajkQEAyxs3ovOxK4l1DDV8E1M+mqQvOo tDO2oZeyW6ZLCtDClZOKWJEQ3fYJwiS9Yzz6NaLr38940y2JADX7994VmRjrR5BTn5mqgixI4eY WwIuLWSIL5otvZPAeJN2QSyUv X-Received: by 2002:a05:6870:64a8:b0:d9:aa23:8ef8 with SMTP id cz40-20020a05687064a800b000d9aa238ef8mr2708453oab.49.1647398234092; Tue, 15 Mar 2022 19:37:14 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzSRWt0R4GpGV54gpiFTz0JldpK5bi52zWlHR0hKHPl016thUFZ1N0ByTNP03bU6g531e6Ggw== X-Received: by 2002:a05:6870:64a8:b0:d9:aa23:8ef8 with SMTP id cz40-20020a05687064a800b000d9aa238ef8mr2708446oab.49.1647398233884; Tue, 15 Mar 2022 19:37:13 -0700 (PDT) Received: from treble ([2600:1700:6e32:6c00::48]) by smtp.gmail.com with ESMTPSA id l31-20020a0568302b1f00b005b272c60230sm350654otv.40.2022.03.15.19.37.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 15 Mar 2022 19:37:13 -0700 (PDT) Date: Tue, 15 Mar 2022 19:37:10 -0700 From: Josh Poimboeuf To: Lai Jiangshan Cc: linux-kernel@vger.kernel.org, x86@kernel.org, Borislav Petkov , Peter Zijlstra , Lai Jiangshan , Andy Lutomirski , Thomas Gleixner , Ingo Molnar , Dave Hansen , "H. Peter Anvin" Subject: Re: [PATCH V3 3/7] x86/entry: Switch the stack after error_entry() returns Message-ID: <20220316023710.jqmi666o6cqyoonh@treble> References: <20220315073949.7541-1-jiangshanlai@gmail.com> <20220315073949.7541-4-jiangshanlai@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20220315073949.7541-4-jiangshanlai@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Mar 15, 2022 at 03:39:45PM +0800, Lai Jiangshan wrote: > .Lerror_entry_from_usermode_after_swapgs: > /* Put us onto the real thread stack. */ This comment is no longer correct. -- Josh