Received: by 2002:a25:4158:0:0:0:0:0 with SMTP id o85csp2587050yba; Mon, 15 Apr 2019 15:10:10 -0700 (PDT) X-Google-Smtp-Source: APXvYqzueRArSbWXsxztrwsrFdC6+robF90Gn9uCY1iOjw8jtFZv6+AJ/DLHh3UxJXnuseN9pF5f X-Received: by 2002:a17:902:e7:: with SMTP id a94mr78149805pla.114.1555366210336; Mon, 15 Apr 2019 15:10:10 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1555366210; cv=none; d=google.com; s=arc-20160816; b=dFGnRtFoIog84VPTRZifvPJVDUbuWAnMzNfHdAMztB4Wd+D5g38MlDy09oaVpCXk0E dBOhPjyYxkaOG3IJYlXdy8tqfTJH4WsZzbzHE46pdbZOkMGnvK/f3l2d69BaugNrNXaM JpUPa5oz8JQ4lJBvs6Fhf8rPzbmaL4ifSWe0IQsHMSyXIaj5Ng54a+JN8VKbcxTYUEvb BhD5ygWU73yGAVtUbocMIrBH006CRzea3F/S/uJpfVYviCBkLYL72fmD7uGESbBphWm6 EiMRb/rSuid8bUOAJNdm9+RzjVNJ53WdRi/eA5o2qzU3zkJjijQXQJJu60i14HVNR4SP W0MQ== 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-disposition:mime-version:references:message-id:subject:cc :to:from:date:dkim-signature; bh=8Aje10yufwDcR7lfPnfV/+flpxKtC7w6WCA3kTqNKRM=; b=T5huDjYYIuP9XxeoZ3Y7Bo+pd3VItPzTsYp3DX3X9JwBt/U2SnP/PIauJZKJGjD4tY ma7oatEkIHIfbxEcnAqeT9u3mM5CoixwAC3jcFJVaApAaJc3rMh61weXlUPZUz0z6zBt FjoV1fV1U2/kp15FYgkriZBtFBA6YZXWsOExtTlpK2tiAMP5DoyxumHxN0gm6IPlLE9r 4UuzPGd7vSpp/0S70GHZn4qFlQ2onyFiqKLNHapdfdXpsfLgZ8Rln2Oxu+oSIxpLSBH2 QMYnFp32EuzaYf3zE83e3z5uHESlzsicYU4VSQO5XnNZ/bbl3sOvDu7ufTM3OHd0ch56 06AQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=0CqOZAdr; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id o11si12671582plk.413.2019.04.15.15.09.54; Mon, 15 Apr 2019 15:10:10 -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; dkim=pass header.i=@kernel.org header.s=default header.b=0CqOZAdr; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727988AbfDOWIB (ORCPT + 99 others); Mon, 15 Apr 2019 18:08:01 -0400 Received: from mail.kernel.org ([198.145.29.99]:43194 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727214AbfDOWIB (ORCPT ); Mon, 15 Apr 2019 18:08:01 -0400 Received: from localhost (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 124152075B; Mon, 15 Apr 2019 22:07:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1555366080; bh=b2cuajjF73VQmsKO5wsxLH6+hE4W9NTDx57OxKqZIlY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=0CqOZAdroPzZR8Vzt2wv1Ye/473yZUpyLPl1l8G2MdZcqfQDy9q3w7bHHdbr10a5B HqrZE0RyUfDfYV9MJUCpeHUCR3g2g7JbRE3VQpRMciOKlHVx+F1rlBEFjxcCb06NKo +XaMvk3nuUcYLUGBL9HCJklTCkypoXt3LzqPFskE= Date: Mon, 15 Apr 2019 18:07:55 -0400 From: Sasha Levin To: Pavel Machek Cc: Greg Kroah-Hartman , linux-kernel@vger.kernel.org, stable@vger.kernel.org, Jarkko Nikula , Andy Lutomirski , "Rafael J. Wysocki" , Thomas Gleixner , Borislav Petkov , Josh Poimboeuf , Linus Torvalds , Peter Zijlstra , "Rafael J. Wysocki" , Zhang Rui , Ingo Molnar Subject: Re: [PATCH 4.14 04/69] x86/power/32: Move SYSENTER MSR restoration to fix_processor_context() Message-ID: <20190415220755.GW11568@sasha-vm> References: <20190415183726.036654568@linuxfoundation.org> <20190415183727.431075450@linuxfoundation.org> <20190415200747.GC25908@amd> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <20190415200747.GC25908@amd> 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 Mon, Apr 15, 2019 at 10:07:47PM +0200, Pavel Machek wrote: >On Mon 2019-04-15 20:58:22, Greg Kroah-Hartman wrote: >> [ Upstream commit 896c80bef4d3b357814a476663158aaf669d0fb3 ] >> >> x86_64 restores system call MSRs in fix_processor_context(), and >> x86_32 restored them along with segment registers. The 64-bit >> variant makes more sense, so move the 32-bit code to match the >> 64-bit code. >> >> No side effects are expected to runtime behavior. > >Again, this is cleanup, not a bugfix. Indeed, these two are just preparatory patches rather than fixes. Patches that come later need these. -- Thanks, Sasha