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x-vs=clean score=-100 state=0 X-ME-VSCategory: clean X-CM-Envelope: MS4wfOxMZF/AkghtTTr/Oh4kPbmyvU0DOXm9swm12JYdNpZCqXLOr0kewybILtS+NQwHuWJ5PDpq8fCMSOmrNPBDBYl3kYOBL6jS6FH1NtBu+K/gbYfbd1lX LcjnUWM412PYhIdL5pGqLYFJ2lnEFl/xbIfemAihks9BfTHm/24DnmDE1Lndbes/+B/XhnOAIezBEZVzRt/lhDAyIrGnePPeQ3K0UOt67cPeombTUIP7gMeh X-CM-Analysis: v=2.3 cv=FKU1Odgs c=1 sm=1 tr=0 a=UK1r566ZdBxH71SXbqIOeA==:117 a=UK1r566ZdBxH71SXbqIOeA==:17 a=IkcTkHD0fZMA:10 a=VUJBJC2UJ8kA:10 a=yPCof4ZbAAAA:8 a=iox4zFpeAAAA:8 a=7iM0ZvGrzmYxbR-hzE8A:9 a=QEXdDO2ut3YA:10 a=WzC6qhA0u3u7Ye7llzcV:22 X-ME-CMScore: 0 X-ME-CMCategory: none Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751711AbeEBOyi (ORCPT ); Wed, 2 May 2018 10:54:38 -0400 Received: from aserp2130.oracle.com ([141.146.126.79]:54592 "EHLO aserp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751658AbeEBOyd (ORCPT ); Wed, 2 May 2018 10:54:33 -0400 Subject: Re: [Xen-devel] [PATCH 2/4] xen/PVH: Use proper CS selector in long mode To: Jan Beulich Cc: xen-devel , Juergen Gross , linux-kernel@vger.kernel.org, stable@vger.kernel.org References: <20180430162339.17143-1-boris.ostrovsky@oracle.com> <20180430162339.17143-3-boris.ostrovsky@oracle.com> <5AE9713D02000078001C007B@prv1-mh.provo.novell.com> From: Boris Ostrovsky Openpgp: preference=signencrypt Autocrypt: addr=boris.ostrovsky@oracle.com; 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Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0 MIME-Version: 1.0 In-Reply-To: <5AE9713D02000078001C007B@prv1-mh.provo.novell.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Content-Language: en-US X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=8880 signatures=668698 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=855 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1711220000 definitions=main-1805020123 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On 05/02/2018 04:05 AM, Jan Beulich wrote: >>>> On 30.04.18 at 18:23, wrote: >> Signed-off-by: Boris Ostrovsky > Reviewed-by: Jan Beulich > > But to understand why things have been working nevertheless it would > have been nice if the commit message wasn't empty, but instead said > something like "The two happen to be identical on 64-bit." Why do you think they are identical? __KERNEL_CS points to entry#12 (which we don't specify in PVH GDT) while __BOOT_CS is the second entry (which we do create). -boris