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Thu, 2 Feb 2023 17:04:47 GMT Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D43692004B; Thu, 2 Feb 2023 17:04:46 +0000 (GMT) Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 05CC320043; Thu, 2 Feb 2023 17:04:45 +0000 (GMT) Received: from osiris (unknown [9.171.31.155]) by smtpav06.fra02v.mail.ibm.com (Postfix) with ESMTPS; Thu, 2 Feb 2023 17:04:44 +0000 (GMT) Date: Thu, 2 Feb 2023 18:04:43 +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, 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 , Herbert Xu , davem@davemloft.net, 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, iommu@lists.linux.dev, linux-arch@vger.kernel.org, linux-crypto@vger.kernel.org Subject: Re: [PATCH v2 03/10] arch: Introduce arch_{,try_}_cmpxchg128{,_local}() Message-ID: References: <20230202145030.223740842@infradead.org> <20230202152655.373335780@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230202152655.373335780@infradead.org> X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: FHdsPEaqsFg45qSGo90As5Aep1zo1_oE X-Proofpoint-GUID: hpauW67JMPa2pJxw-_S6KStoX2TLt-s_ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.930,Hydra:6.0.562,FMLib:17.11.122.1 definitions=2023-02-02_10,2023-02-02_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 bulkscore=0 phishscore=0 spamscore=0 adultscore=0 suspectscore=0 mlxlogscore=383 mlxscore=0 clxscore=1011 malwarescore=0 priorityscore=1501 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2302020148 X-Rspam-User: X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 01DB4C002D X-Stat-Signature: trtk4p8946p1om4jpieqehogf9qc84s7 X-HE-Tag: 1675357531-117830 X-HE-Meta: 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 crdJZ/um weC5e5ZSJuXa1Ugt6ZZTT42AAZBJUmHvqDZXg9pqInBMFTeqjOlvbDosOyipE9/p5sHqmAsMuNIamYtILLd3CgDYnqaVX4Mg1LXfmZm8inwhtDjqEXdAPtD3KyJO/puFKZPnJ622LByGQyuDeCVavQPiURGg97zvdiz3Fu5FUG3B2bNe7OBy7sBxtdIBp70B2YhYRHjKfzvJbnF60+SqHsviEMJ11DjS0Kkyf9vObRwlBDtE+Pj0rY9X9egP/D3WSU/aWrCfYsHB8hB2EKipnG3LMY9XIF+UqDDntx4rcDnPh9CetkT2PqnrP1uTUOJorO/P7xmnAQ1L0t2HGPsfr3jMBpw== 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 Thu, Feb 02, 2023 at 03:50:33PM +0100, Peter Zijlstra wrote: > For all architectures that currently support cmpxchg_double() > implement the cmpxchg128() family of functions that is basically the > same but with a saner interface. > > Signed-off-by: Peter Zijlstra (Intel) > --- > arch/arm64/include/asm/atomic_ll_sc.h | 41 +++++++++++++++++++++++++ > arch/arm64/include/asm/atomic_lse.h | 31 +++++++++++++++++++ > arch/arm64/include/asm/cmpxchg.h | 26 ++++++++++++++++ > arch/s390/include/asm/cmpxchg.h | 14 ++++++++ > arch/x86/include/asm/cmpxchg_32.h | 3 + > arch/x86/include/asm/cmpxchg_64.h | 55 +++++++++++++++++++++++++++++++++- > 6 files changed, 168 insertions(+), 2 deletions(-) For s390: Acked-by: Heiko Carstens