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Thu, 11 Sep 2025 07:45:03 +0000 (GMT) Date: Thu, 11 Sep 2025 09:45:01 +0200 From: Juergen Christ To: Heiko Carstens Cc: Nathan Chancellor , Miguel Ojeda , Vasily Gorbik , Alexander Gordeev , linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org, Sven Schnelle , Christian Borntraeger Subject: Re: [PATCH 3/3] s390/bitops: Remove volatile qualifier from flogr() inline assembly Message-ID: References: <20250910151216.646600-1-hca@linux.ibm.com> <20250910151216.646600-4-hca@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250910151216.646600-4-hca@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: z5XWPnnXBTTPlts4YTcPyDvVCihWxfHB X-Proofpoint-GUID: z5XWPnnXBTTPlts4YTcPyDvVCihWxfHB X-Authority-Analysis: v=2.4 cv=EYDIQOmC c=1 sm=1 tr=0 ts=68c27e04 cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=kj9zAlcOel0A:10 a=yJojWOMRYYMA:10 a=VnNF1IyMAAAA:8 a=UgCQg_vQzY_h6LtPfmAA:9 a=CjuIK1q_8ugA:10 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwOTA2MDAyMCBTYWx0ZWRfX7nrIzfXrmjn8 QPb6DseKCIosABRJaVnB+BcLxmqsljK/S8OPy3vVoAn2407arTVS+sN5+En8wkEs5TTBaFkqG4E Cm082CYHNGr/1vruTo/zXafa03vznCNsUSya/SRXK0Je4YaHLjXyZYwQ4GxXu4bz1FKVNTxXOck mw6v+UmKGrrKxOtG61FvEhIVIx2BZhy74i3OUma+fj5fupGvk4nN4EVSx/4US+DO/vI8aobgnIs qmtuGCL1ZU6WAjj0zUx3zyMz1sG1YjE+8rBhtk5tSgQOaPwMAfQPp8Xeodl/gUvm8t3yA2gEnS1 WixyD65CJhd9E8TxTRrCSHlSymzhqmuwC6Ft9gagIUjsuOFIsRGDY+eL/tU22AM8uZmkMBQPwI4 VR6+9N4D X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1117,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-09-10_04,2025-09-10_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 adultscore=0 suspectscore=0 spamscore=0 impostorscore=0 priorityscore=1501 phishscore=0 clxscore=1011 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2509060020 > The flogr() inline assembly has no side effects and generates the same > output if the input does not change. Therefore remove the volatile > qualifier to allow the compiler to optimize the inline assembly away, > if possible. > > This also removes the superfluous '\n' which makes the inline assembly > appear larger than it is according to compiler heuristics (number of > lines). > > Suggested-by: Juergen Christ > Signed-off-by: Heiko Carstens Reviewed-by: Juergen Christ