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[209.132.180.67]) by mx.google.com with ESMTP id s139si5453235pfs.56.2019.03.11.06.49.31; Mon, 11 Mar 2019 06:49:47 -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; 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 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727495AbfCKNsm (ORCPT + 99 others); Mon, 11 Mar 2019 09:48:42 -0400 Received: from mx0b-002e3701.pphosted.com ([148.163.143.35]:54746 "EHLO mx0b-002e3701.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727320AbfCKNsm (ORCPT ); Mon, 11 Mar 2019 09:48:42 -0400 Received: from pps.filterd (m0148664.ppops.net [127.0.0.1]) by mx0b-002e3701.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x2BDj2kd006573; Mon, 11 Mar 2019 13:48:21 GMT Received: from g4t3426.houston.hpe.com (g4t3426.houston.hpe.com [15.241.140.75]) by mx0b-002e3701.pphosted.com with ESMTP id 2r5r140ej0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 11 Mar 2019 13:48:21 +0000 Received: from sarge.linuxathome.me (unknown [16.99.136.158]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by g4t3426.houston.hpe.com (Postfix) with ESMTPS id 68F3459; Mon, 11 Mar 2019 13:48:17 +0000 (UTC) Date: Mon, 11 Mar 2019 13:48:14 +0000 From: Hedi Berriche To: Greg Kroah-Hartman Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org, Hedi Berriche , Borislav Petkov , Ard Biesheuvel , Russ Anderson , Dimitri Sivanich , Steve Wahl , Mike Travis , Andy Shevchenko , Bhupesh Sharma , Darren Hart , "H. Peter Anvin" , Ingo Molnar , linux-efi , platform-driver-x86@vger.kernel.org, Thomas Gleixner , x86-ml Subject: Please revert 7212e37cbdf9 from 4.4-stable Message-ID: <20190311134814.GC30367@sarge.linuxathome.me> Mail-Followup-To: Greg Kroah-Hartman , linux-kernel@vger.kernel.org, stable@vger.kernel.org, Borislav Petkov , Ard Biesheuvel , Russ Anderson , Dimitri Sivanich , Steve Wahl , Mike Travis , Andy Shevchenko , Bhupesh Sharma , Darren Hart , "H. Peter Anvin" , Ingo Molnar , linux-efi , platform-driver-x86@vger.kernel.org, Thomas Gleixner , x86-ml MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) X-HPE-SCL: -1 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-03-11_11:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=487 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1903110100 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Greg, Could you please revert 7212e37cbdf9 x86/platform/UV: Use efi_runtime_lock to serialise BIOS calls from 4.4-stable? In 4.4-stable efi_runtime_lock as defined in drivers/firmware/efi/runtime-wrappers.c is a spinlock (given it predates commit dce48e351c0d) and commit f331e766c4be x86/platform/UV: Use efi_runtime_lock to serialise BIOS calls which 7212e37cbdf9 is a backport of, needs it to be a semaphore. Cheers, Hedi. -- Be careful of reading health books, you might die of a misprint. -- Mark Twain