From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C571AC001B0 for ; Mon, 7 Aug 2023 13:19:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233899AbjHGNT2 (ORCPT ); Mon, 7 Aug 2023 09:19:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33844 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230429AbjHGNT0 (ORCPT ); Mon, 7 Aug 2023 09:19:26 -0400 Received: from mail-ej1-x62f.google.com (mail-ej1-x62f.google.com [IPv6:2a00:1450:4864:20::62f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 893B4B3 for ; Mon, 7 Aug 2023 06:19:25 -0700 (PDT) Received: by mail-ej1-x62f.google.com with SMTP id a640c23a62f3a-99bdeae1d0aso624410666b.1 for ; Mon, 07 Aug 2023 06:19:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1691414364; x=1692019164; 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=zJJrvD/G9JTxhkHQHH1bGUg27rSaJAiqqO5viUJTjQc=; b=OubUae7D5dFyrm+J+1BdPm0HxvypQANTVeNS01zzb0cZgE+sfyYY9wgtXLHTnNKebj HiTKnTsCd1LsISGObIZzSxRUXP/SapP955hm9kiP4TtOhXr6yDcryx+o5HwqClrlBK83 ldcp5TqiNMLHoiskun8vvb/8Vx12rKIUTEa9tOLNNRnYZakHYoSvFg9zCyn67jkYk2Ta lacmrzynspZ8ZTkZg47TB2xRgMGuskAla0Q+EJV/pVJGSwb0KiVhlWSfxrXzrviejJxd Xda/I/2KZX53XxRydUQ6wWlmNXwPn+DAB3ULIpR64dry/Zhanqosa1d2Iie9To1oZQ/L QCrQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691414364; x=1692019164; 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=zJJrvD/G9JTxhkHQHH1bGUg27rSaJAiqqO5viUJTjQc=; b=TOz9kBI8AB9PjKkq7Hghx+F8TlMb3NzMlOO8aOCIZwBR8NAZ+4GuR7WEFxYxvwPuhY XCOwcjEbg/s7LMhqtkJI7w3ZZ2MZMdF1hpl3MBZJxKlSZqA2s8rEjTat1+94+3aYdcl7 6bIiSZFlsm2vk6lU9VUGN1PJTMXjgR27g9qFEFbL12MOJ2aXA9tVv+bI6iUgfQ7afOT+ z+77t8M/NVwtY7Vd2FrJVtq9M40LMO7JJlL6AD4o55DXwxLaXYECcMAnGJTgvc7LRUGY h30Rs2EEVMQsPxAkneFn6krPfIQrDKxPfWhcXJZqLXgg8tJykwpmpgWW69riqkTRwThv au5A== X-Gm-Message-State: AOJu0YzefHgkw4eY4T2hWcaTaOMTaLvxI7gIFCgLFKkCZwDhdipUXV7b r0r2htNDWTCgi8OPhf4Vyl4= X-Google-Smtp-Source: AGHT+IGexcOw9OTpTSxtU/vNVu0HkNeyOnSx4BEJl7C/iVOA+SPKFlbwi0l/WdKJIbM6+humbhvVPQ== X-Received: by 2002:a17:906:538b:b0:974:771e:6bf0 with SMTP id g11-20020a170906538b00b00974771e6bf0mr7141044ejo.56.1691414363798; Mon, 07 Aug 2023 06:19:23 -0700 (PDT) Received: from andrea (host-82-57-177-142.retail.telecomitalia.it. [82.57.177.142]) by smtp.gmail.com with ESMTPSA id bt20-20020a170906b15400b009929ab17be0sm5152584ejb.162.2023.08.07.06.19.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Aug 2023 06:19:23 -0700 (PDT) Date: Mon, 7 Aug 2023 15:19:18 +0200 From: Andrea Parri To: Mathieu Desnoyers Cc: paulmck@kernel.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, mmaas@google.com, hboehm@google.com, striker@us.ibm.com Subject: Re: [RFC PATCH] membarrier: riscv: Provide core serializing command Message-ID: References: <20230803040111.5101-1-parri.andrea@gmail.com> <4bf79f06-4593-134a-04dd-b8f89e96a1b8@efficios.com> <65350c17-3fcf-a057-a280-f6a5d36dcb21@efficios.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > One more noteworthy detail: if a system call similar to ARM cacheflush(2) is implemented for > RISC-V, perhaps an iovec ABI (similar to readv(2)/writev(2)) would be relevant to handle > batching of cache flushing when address ranges are not contiguous. Maybe with a new name > like "cacheflushv(2)", so eventually other architectures could implement it as well ? I believe that's a sensible idea. But the RISC-V maintainers can provide a more reliable feedback. Andrea