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Lu" CC: the arch/x86 maintainers , "H. Peter Anvin" , Thomas Gleixner , Ingo Molnar , LKML , "open list:DOCUMENTATION" , Linux-MM , linux-arch , Linux API , Arnd Bergmann , Andy Lutomirski , Balbir Singh , Cyrill Gorcunov , Dave Hansen , "Eugene Syromiatnikov" , Florian Weimer , "Jann Horn" , Jonathan Corbet , Kees Cook , Mike Kravetz , Nadav Amit , Oleg Nesterov , Pavel Machek , Peter Zijlstra , Randy Dunlap , "Ravi V. Shankar" , "Dave Martin" , Weijiang Yang , Pengfei Xu , Haitao Huang , Rick P Edgecombe References: <20210820181201.31490-1-yu-cheng.yu@intel.com> <20210820181201.31490-26-yu-cheng.yu@intel.com> From: "Yu, Yu-cheng" Message-ID: <47a73ab7-20c9-f7bb-14b0-ba81e33fa1ad@intel.com> Date: Thu, 26 Aug 2021 10:33:03 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Firefox/78.0 Thunderbird/78.13.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-ClientProxiedBy: MWHPR10CA0070.namprd10.prod.outlook.com (2603:10b6:300:2c::32) To DM8PR11MB5736.namprd11.prod.outlook.com (2603:10b6:8:11::11) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [192.168.0.18] (98.33.34.38) by MWHPR10CA0070.namprd10.prod.outlook.com (2603:10b6:300:2c::32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4457.20 via Frontend Transport; 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Lu wrote: >>>> + /* >>>> + * Earlier clone() does not pass stack_size. Use RLIMIT_STACK and >>> >>> What is "earlier clone()"? >> >> clone() doesn't have stack size info which was added to clone3(). > > /me goes and reads the manpage... > > clone3() > The clone3() system call provides a superset of the functionality of the older > clone() interface. It also provides a number of API improvements, including: > space for additional flags bits; cleaner separation in the use of various argu‐ > ments; and the ability to specify the size of the child's stack area. > > Aha, Yu-cheng, pls use those words to make your comment understandable. > > Thx. > Sure! Yu-cheng