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Tue, 3 Jan 2023 17:16:49 GMT Received: from smtprelay06.fra02v.mail.ibm.com ([9.218.2.230]) by ppma03fra.de.ibm.com (PPS) with ESMTPS id 3mtcq6k0pq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 03 Jan 2023 17:16:49 +0000 Received: from smtpav05.fra02v.mail.ibm.com (smtpav05.fra02v.mail.ibm.com [10.20.54.104]) by smtprelay06.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 303HGjnh20644460 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 3 Jan 2023 17:16:45 GMT Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 75F8F2004B; Tue, 3 Jan 2023 17:16:45 +0000 (GMT) Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3E35F20040; Tue, 3 Jan 2023 17:16:43 +0000 (GMT) Received: from osiris (unknown [9.171.65.115]) by smtpav05.fra02v.mail.ibm.com (Postfix) with ESMTPS; Tue, 3 Jan 2023 17:16:43 +0000 (GMT) Date: Tue, 3 Jan 2023 18:16:41 +0100 From: Heiko Carstens To: Peter Zijlstra Cc: torvalds@linux-foundation.org, corbet@lwn.net, will@kernel.org, boqun.feng@gmail.com, mark.rutland@arm.com, catalin.marinas@arm.com, dennis@kernel.org, tj@kernel.org, cl@linux.com, gor@linux.ibm.com, agordeev@linux.ibm.com, borntraeger@linux.ibm.com, svens@linux.ibm.com, Herbert Xu , davem@davemloft.net, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, joro@8bytes.org, suravee.suthikulpanit@amd.com, robin.murphy@arm.com, dwmw2@infradead.org, baolu.lu@linux.intel.com, Arnd Bergmann , penberg@kernel.org, rientjes@google.com, iamjoonsoo.kim@lge.com, Andrew Morton , vbabka@suse.cz, roman.gushchin@linux.dev, 42.hyeyoo@gmail.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-s390@vger.kernel.org, linux-crypto@vger.kernel.org, iommu@lists.linux.dev, linux-arch@vger.kernel.org Subject: Re: [RFC][PATCH 11/12] slub: Replace cmpxchg_double() Message-ID: References: <20221219153525.632521981@infradead.org> <20221219154119.550996611@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20221219154119.550996611@infradead.org> X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: aYt5JesJFhS0mKJx405t1-xW5NqppuLb X-Proofpoint-GUID: Z03ZnZI1MCXR4CrburtVGAvLqmHB93ng X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.923,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2023-01-03_05,2023-01-03_02,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 suspectscore=0 adultscore=0 mlxscore=0 phishscore=0 spamscore=0 bulkscore=0 impostorscore=0 lowpriorityscore=0 priorityscore=1501 malwarescore=0 mlxlogscore=618 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2301030145 X-Rspam-User: X-Rspamd-Queue-Id: A10FD1C0018 X-Rspamd-Server: rspam01 X-Stat-Signature: hop463qin3p55xu8n8js5dnwz9nun7k1 X-HE-Tag: 1672766243-421761 X-HE-Meta: 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 cTg== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon, Dec 19, 2022 at 04:35:36PM +0100, Peter Zijlstra wrote: > > Signed-off-by: Peter Zijlstra (Intel) > --- > include/linux/slub_def.h | 12 ++- > mm/slab.h | 41 +++++++++++-- > mm/slub.c | 146 ++++++++++++++++++++++++++++------------------- > 3 files changed, 135 insertions(+), 64 deletions(-) Does this actually work? Just wondering since I end up with an instant list corruption on s390. Might be endianness related, but I can't see anything obvious at a first glance.