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[103.168.172.200]) by smtp.gmail.com with ESMTPSA id fa12-20020a05622a4ccc00b00430ad0bda57sm337957qtb.21.2024.03.22.17.49.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 Mar 2024 17:49:48 -0700 (PDT) Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailfauth.nyi.internal (Postfix) with ESMTP id 136631200066; Fri, 22 Mar 2024 20:49:47 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute4.internal (MEProxy); Fri, 22 Mar 2024 20:49:47 -0400 X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvledruddtfedgvdekucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhepfffhvfevuffkfhggtggujgesthdtredttddtvdenucfhrhhomhepuehoqhhu nhcuhfgvnhhguceosghoqhhunhdrfhgvnhhgsehgmhgrihhlrdgtohhmqeenucggtffrrg htthgvrhhnpeehudfgudffffetuedtvdehueevledvhfelleeivedtgeeuhfegueeviedu ffeivdenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpe gsohhquhhnodhmvghsmhhtphgruhhthhhpvghrshhonhgrlhhithihqdeiledvgeehtdei gedqudejjeekheehhedvqdgsohhquhhnrdhfvghngheppehgmhgrihhlrdgtohhmsehfih igmhgvrdhnrghmvg X-ME-Proxy: Feedback-ID: iad51458e:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Fri, 22 Mar 2024 20:49:45 -0400 (EDT) Date: Fri, 22 Mar 2024 17:49:23 -0700 From: Boqun Feng To: Kent Overstreet Cc: rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, llvm@lists.linux.dev, Miguel Ojeda , Alex Gaynor , Wedson Almeida Filho , Gary Guo , =?iso-8859-1?Q?Bj=F6rn?= Roy Baron , Benno Lossin , Andreas Hindborg , Alice Ryhl , Alan Stern , Andrea Parri , Will Deacon , Peter Zijlstra , Nicholas Piggin , David Howells , Jade Alglave , Luc Maranget , "Paul E. 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Peter Anvin" , Catalin Marinas , torvalds@linux-foundation.org, linux-arm-kernel@lists.infradead.org, linux-fsdevel@vger.kernel.org Subject: Re: [WIP 0/3] Memory model and atomic API in Rust Message-ID: References: <20240322233838.868874-1-boqun.feng@gmail.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240322_174950_520138_49961E31 X-CRM114-Status: GOOD ( 14.63 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Mar 22, 2024 at 05:15:08PM -0700, Boqun Feng wrote: [...] > > > > I wonder about that. The disadvantage of only supporting LKMM atomics is > > that we'll be incompatible with third party code, and we don't want to > > be rolling all of our own data structures forever. > > > > A possible solution to that is a set of C++ memory model atomics > implemented by LKMM atomics. That should be possible. > Another possible "solution" works in the opposite direction, since the folder rust/kernel/sync/atomic is quite stand-alone, we can export that as a Rust crate (library), and third party code can support using LKMM atomics instead of Rust own atomics ;-) Of course if the project is supposed to work with Linux kernel. Regards, Boqun _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel