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Fri, 15 Jul 2022 07:49:15 +0000 (GMT) Received: from vela (unknown [9.145.26.36]) by d06av26.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Fri, 15 Jul 2022 07:49:15 +0000 (GMT) Received: from brueckner by vela with local (Exim 4.94.2) (envelope-from ) id 1oCG4X-0002V8-M2; Fri, 15 Jul 2022 09:49:13 +0200 Date: Fri, 15 Jul 2022 09:49:13 +0200 From: Hendrik Brueckner To: Steffen Eiden Cc: Heiko Carstens , Alexander Gordeev , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Vasily Gorbik , linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, nrb@linux.ibm.com Subject: Re: [PATCH v2 0/3] s390/cpufeature: rework to allow different types of cpufeatures Message-ID: References: <20220713125644.16121-1-seiden@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220713125644.16121-1-seiden@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-GUID: NrlKyrrwodamK7ZPJwExaYSrWT6tPx8g X-Proofpoint-ORIG-GUID: NrlKyrrwodamK7ZPJwExaYSrWT6tPx8g X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.883,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-07-15_02,2022-07-14_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 clxscore=1011 malwarescore=0 lowpriorityscore=0 suspectscore=0 bulkscore=0 spamscore=0 impostorscore=0 mlxlogscore=756 priorityscore=1501 mlxscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2206140000 definitions=main-2207150031 ARC-Seal: i=1; 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dkim=pass header.d=ibm.com header.s=pp1 header.b=FGkaaWsY; dmarc=pass (policy=none) header.from=ibm.com; spf=pass (imf31.hostedemail.com: domain of brueckner@linux.ibm.com designates 148.163.156.1 as permitted sender) smtp.mailfrom=brueckner@linux.ibm.com X-Rspamd-Server: rspam11 X-HE-Tag: 1657871362-890063 X-Bogosity: Ham, tests=bogofilter, spamicity=0.003948, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Maybe, I am bit late ... On Wed, Jul 13, 2022 at 02:56:41PM +0200, Steffen Eiden wrote: > Currently the s390 implementaion of cpufeature is limited to elf_hwcap > bits. Using these to automatically load modules also exposes this > cpufeature to userspace which, sometimes is not intended. Those features are (always) exposed to user space as module loading is actually done by udev rules. However, we had some pseudo-hwcaps (e.g. sie64a) in the past.. but I very appreciate this change! Thanks.