From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ed1-x531.google.com (mail-ed1-x531.google.com [IPv6:2a00:1450:4864:20::531]) by sourceware.org (Postfix) with ESMTPS id 9A57B385697B for ; Wed, 12 Oct 2022 17:16:28 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 9A57B385697B Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=rivosinc.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=rivosinc.com Received: by mail-ed1-x531.google.com with SMTP id r14so11031715edc.7 for ; Wed, 12 Oct 2022 10:16:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20210112.gappssmtp.com; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=hQK4i+zeiba1vOV/s4I4CHeqthZ61qu/ec53JpEGDGI=; b=blpQQn0ElSGhccwL6uRb5ILmBM7ouq7FBCUwzn3ve43F5Ty/2NGDOddj/Azvd0Cu/B z+9qIc1maSxq4QXaglvKVZrZ86dsxGp2B8d7sxo0YPd4OM40CcHLJJjxLo1lRMt4NasM 1p3QkiEfkWohbloIZekrUi6HudhDvoUIAHzlVd4EuKypY0C5+BqQCkXuhxplHAWaz9iE ZwBTtjHGZ3kOYm8YEF7BH1U0PWzUW6tdrklTvPAxhV5fUmANNl7859k4RQBL5supg2QD AuRxjnG5Sgekotsk4ZJBFqo/Bh+fbOJVmDdeaKFQm9mJxfOstDLpXyc3J0M2swcB3knZ Xzog== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=hQK4i+zeiba1vOV/s4I4CHeqthZ61qu/ec53JpEGDGI=; b=MFiA0hJZRekLCwozGLpJMA/8/sVpAYThY4o94nhFGa0RodgGXXoDGrBIjMzEHWXsMJ ecpfsfw1478TlrmGWHmrwiLGVGAZTUGLvO3k5ZcH48/18y/YYu3kfi42wPnIX7WF+DsM SBtrpP08Rr/qS2cTEEnOzqRS1oWFlduSqTJxqH/iVWHDyRZbN2aiJvhNQwYOVcpMyFuz qEI+HGVGHJzfCU0ZPDzJXkBpFn+Ru904HCfjNZXa/AT31hjdNNU2e1bmMdzaSlQaU9Im JBhOqEoc4tdiLv7qaF+gCC9qW/PkTcOCARpzyLIpEN4rjCUWxt5Mv+GNhNaxuljJbBuj IwqA== X-Gm-Message-State: ACrzQf1SWWgUPL7KyxMtLz5+mVljarBgVeI0fVtu0vn/DNoIX2C5PdPf XJDsQJaHuNiLtqx4fDZp6gmPQw== X-Google-Smtp-Source: AMsMyM4I7JMGpTBh+D/2IsyXQgYpiVmKXymuBEFHyjrXbOh+qAG7nHndcdG3m3eHkoYqTxcDDntuIA== X-Received: by 2002:aa7:c6c1:0:b0:459:4591:f42f with SMTP id b1-20020aa7c6c1000000b004594591f42fmr27647135eds.318.1665594987422; Wed, 12 Oct 2022 10:16:27 -0700 (PDT) Received: from andrea (host-79-35-32-201.retail.telecomitalia.it. [79.35.32.201]) by smtp.gmail.com with ESMTPSA id r2-20020a1709061ba200b0078dce9984afsm1547160ejg.220.2022.10.12.10.16.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Oct 2022 10:16:26 -0700 (PDT) Date: Wed, 12 Oct 2022 19:16:20 +0200 From: Andrea Parri To: Palmer Dabbelt Cc: Vineet Gupta , jeffreyalaw@gmail.com, cmuellner@gcc.gnu.org, gcc-patches@gcc.gnu.org, kito.cheng@sifive.com, gnu-toolchain@rivosinc.com Subject: Re: [PATCH v2 00/10] [RISC-V] Atomics improvements [PR100265/PR100266] Message-ID: References: <3862a109-8083-7a36-3d85-8f9e5e10627c@rivosinc.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Spam-Status: No, score=-2.4 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: > > > +Andrea, in case he has time to look at the memory model / ABI > > > issues. > +Jeff, who was offering to help when the threads got crossed. I'd punted on > a lot of this in the hope Andrea could help out, as I'm not really a memory > model guy and this is pretty far down the rabbit hole. Happy to have the > help if you're offering, though, as what's there is likely a pretty big > performance issue for anyone with a reasonable memory system. Thanks for linking me to the discussion and the remarks, Palmer. I'm happy to help (and synchronized with Jeff/the community) as possible, building a better understanding of the 'issues' at stake. Andrea