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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0CE01C77B7D for ; Fri, 5 May 2023 05:47:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:Subject:Message-ID:Date:From: In-Reply-To:References:MIME-Version:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=R4aAjlS9wtHknjlaySm5VQbJeqIh6X2Ktu+0+dmBd6Y=; b=RvdlHpy5r3aiPk JRrpLhWIf3vgBK+0UXx/5EWTJVz+QO+zOJSY9GQZOQ1ebu+O5QUgaPSL6PB4G7ueJOH2zfrzItwEs ARXgml1DEIrMKNvzyO+ceAeFtGxahZfOmZipGiMVfKTpXB1DWJ4+4q/VPTQRvQtGcseKi2dQXB3IA 42hMDi9cgGfHgUiw422JxM3nlV4JxCFUvHHl3gZ7xb6BLQ21Pkzo9KgLh94aYA9iiGp6udi4SRmII uSUYujAg/pvtrAJPF8IcwAYGGXLegjMVMl+Orh3fskhJGx0dKtbYguGubW6d7XTAWXWehJ+DT5J0k 7K5f03KpQ4GZLPJLBDIQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1puoIF-009kyF-13; Fri, 05 May 2023 05:47:47 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1puoIA-009kxX-14; Fri, 05 May 2023 05:47:43 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 0389F63B2E; Fri, 5 May 2023 05:47:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6C046C433A0; Fri, 5 May 2023 05:47:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1683265657; bh=TmEJ43a9wRyU79Q4Z9WHv4VZR6aLeCdSzDRMZZtHgkE=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=Z26bR3GD7NZekm8D2fY3Likq3Z+WzMYLxGNnfeJCb+QwNkNe2TrCsNu2VFfZjShat waIgr8ZT+ardQLvN1NlwZYzH5cZxJYxowJsqGOWno8Rl9LGCyRjXrN4kUrT0wSjKA3 va31vYv4BfxRUWA0U1ACB0SZxiczkJ6ChjLmeQmgK6um5tf4OdsSdlBmir+dXjr7Ib eodQwnLUWN7khfewboLikhJjzXtjqnFi+oOdZSrfft8Feutqpt4nrnNIFe7eshzIjL 2R7E0+HCH9g3/5K1V+VPwNnTCBGdmrwdimg1OJKzf3tZSMKqnn1Z4uKwCieN6lGWZq wQHAZd8sjvaLg== Received: by mail-lj1-f180.google.com with SMTP id 38308e7fff4ca-2ac7707e34fso15704351fa.1; Thu, 04 May 2023 22:47:37 -0700 (PDT) X-Gm-Message-State: AC+VfDyEW3AO+trWBOm8pcnKV4I5fAw5vDskGXot9mpFezVQPM7cOJTw cnMgQ0NgrN3FSOBamLpbA0na2hXkyE5jFa8Juhc= X-Google-Smtp-Source: ACHHUZ7vjZvoO17O2+xGcjw8YRQwo0MSgi9BtdhaWD+v+3nmuTyY0RrEyW2wbSK+lqJd6C9lcTXOXjjLYHG3jJse7RE= X-Received: by 2002:a17:907:1c07:b0:960:ddba:e5c7 with SMTP id nc7-20020a1709071c0700b00960ddbae5c7mr139047ejc.40.1683265634680; Thu, 04 May 2023 22:47:14 -0700 (PDT) MIME-Version: 1.0 References: <20230327121317.4081816-1-arnd@kernel.org> <20230327121317.4081816-10-arnd@kernel.org> In-Reply-To: <20230327121317.4081816-10-arnd@kernel.org> From: Guo Ren Date: Fri, 5 May 2023 13:47:03 +0800 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH 09/21] riscv: dma-mapping: skip invalidation before bidirectional DMA To: Arnd Bergmann , Arnd Bergmann , Christoph Hellwig Cc: linux-kernel@vger.kernel.org, Vineet Gupta , Will Deacon , Russell King , Neil Armstrong , Linus Walleij , Catalin Marinas , Brian Cain , Geert Uytterhoeven , Michal Simek , Thomas Bogendoerfer , Dinh Nguyen , Stafford Horne , Helge Deller , Michael Ellerman , Christophe Leroy , Paul Walmsley , Palmer Dabbelt , Rich Felker , John Paul Adrian Glaubitz , "David S. Miller" , Max Filippov , Robin Murphy , Lad Prabhakar , Conor Dooley , linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-oxnas@groups.io, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-openrisc@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230504_224742_477266_A4BFA581 X-CRM114-Status: GOOD ( 23.45 ) X-BeenThere: linux-snps-arc@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux on Synopsys ARC Processors List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+linux-snps-arc=archiver.kernel.org@lists.infradead.org T24gTW9uLCBNYXIgMjcsIDIwMjMgYXQgODoxNeKAr1BNIEFybmQgQmVyZ21hbm4gPGFybmRAa2Vy bmVsLm9yZz4gd3JvdGU6Cj4KPiBGcm9tOiBBcm5kIEJlcmdtYW5uIDxhcm5kQGFybmRiLmRlPgo+ Cj4gRm9yIGEgRE1BX0JJRElSRUNUSU9OQUwgdHJhbnNmZXIsIHRoZSBjYWNoZXMgaGF2ZSB0byBi ZSBjbGVhbmVkCj4gZmlyc3QgdG8gbGV0IHRoZSBkZXZpY2Ugc2VlIGRhdGEgd3JpdHRlbiBieSB0 aGUgQ1BVLCBhbmQgaW52YWxpZGF0ZWQKPiBhZnRlciB0aGUgdHJhbnNmZXIgdG8gbGV0IHRoZSBD UFUgc2VlIGRhdGEgd3JpdHRlbiBieSB0aGUgZGV2aWNlLgo+Cj4gcmlzY3YgYWxzbyBpbnZhbGlk YXRlcyB0aGUgY2FjaGVzIGJlZm9yZSB0aGUgdHJhbnNmZXIsIHdoaWNoIGRvZXMKPiBub3QgYXBw ZWFyIHRvIHNlcnZlIGFueSBwdXJwb3NlLgpZZXMsIHdlIGNhbid0IGd1YXJhbnRlZSB0aGUgQ1BV IHByZS1sb2FkIGNhY2hlIGxpbmVzIHJhbmRvbWx5IGR1cmluZwpkbWEgd29ya2luZy4KCkJ1dCBJ J3ZlIHR3byBwdXJwb3NlcyB0byBrZWVwIGludmFsaWRhdGVzIGJlZm9yZSBkbWEgdHJhbnNmZXI6 CiAtIFdlIGNsZWFybHkgdGVsbCB0aGUgQ1BVIHRoZXNlIGNhY2hlIGxpbmVzIGFyZSBpbnZhbGlk LiBUaGUgY2FjaGluZwphbGdvcml0aG0gd291bGQgdXNlIHRoZXNlIGludmFsaWQgc2xvdHMgZmly c3QgaW5zdGVhZCBvZiByZXBsYWNpbmcKdmFsaWQgb25lcy4KIC0gSW52YWxpZGF0aW5nIGlzIHZl cnkgY2hlYXAuIEFjdHVhbGx5LCBmbHVzaCBhbmQgY2xlYW4gaGF2ZSB0aGUgc2FtZQpwZXJmb3Jt YW5jZSBpbiBvdXIgbWFjaGluZS4KClNvLCBob3cgYWJvdXQ6CgpkaWZmIC0tZ2l0IGEvYXJjaC9y aXNjdi9tbS9kbWEtbm9uY29oZXJlbnQuYyBiL2FyY2gvcmlzY3YvbW0vZG1hLW5vbmNvaGVyZW50 LmMKaW5kZXggZDkxOWVmYWI2ZWJhLi4yYzUyZmJjMTUwNjQgMTAwNjQ0Ci0tLSBhL2FyY2gvcmlz Y3YvbW0vZG1hLW5vbmNvaGVyZW50LmMKKysrIGIvYXJjaC9yaXNjdi9tbS9kbWEtbm9uY29oZXJl bnQuYwpAQCAtMjIsOCArMjIsNiBAQCB2b2lkIGFyY2hfc3luY19kbWFfZm9yX2RldmljZShwaHlz X2FkZHJfdCBwYWRkciwgc2l6ZV90IHNpemUsCiAgICAgICAgICAgICAgICBBTFRfQ01PX09QKGNs ZWFuLCB2YWRkciwgc2l6ZSwgcmlzY3ZfY2JvbV9ibG9ja19zaXplKTsKICAgICAgICAgICAgICAg IGJyZWFrOwogICAgICAgIGNhc2UgRE1BX0ZST01fREVWSUNFOgotICAgICAgICAgICAgICAgQUxU X0NNT19PUChjbGVhbiwgdmFkZHIsIHNpemUsIHJpc2N2X2Nib21fYmxvY2tfc2l6ZSk7Ci0gICAg ICAgICAgICAgICBicmVhazsKICAgICAgICBjYXNlIERNQV9CSURJUkVDVElPTkFMOgogICAgICAg ICAgICAgICAgQUxUX0NNT19PUChmbHVzaCwgdmFkZHIsIHNpemUsIHJpc2N2X2Nib21fYmxvY2tf c2l6ZSk7CiAgICAgICAgICAgICAgICBicmVhazsKQEAgLTQyLDcgKzQwLDcgQEAgdm9pZCBhcmNo X3N5bmNfZG1hX2Zvcl9jcHUocGh5c19hZGRyX3QgcGFkZHIsIHNpemVfdCBzaXplLAogICAgICAg ICAgICAgICAgYnJlYWs7CiAgICAgICAgY2FzZSBETUFfRlJPTV9ERVZJQ0U6CiAgICAgICAgY2Fz ZSBETUFfQklESVJFQ1RJT05BTDoKICAgICAgICAgICAgICAgIC8qIEknbSBub3Qgc3VyZSBhbGwg ZHJpdmVycyBoYXZlIGd1YXJhbnRlZWQgY2FjaGVsaW5lCmFsaWdubWVudC4gSWYgbm90LCB0aGlz IGludmFsIHdvdWxkIGNhdXNlIHByb2JsZW1zICovCi0gICAgICAgICAgICAgICBBTFRfQ01PX09Q KGZsdXNoLCB2YWRkciwgc2l6ZSwgcmlzY3ZfY2JvbV9ibG9ja19zaXplKTsKKyAgICAgICAgICAg ICAgIEFMVF9DTU9fT1AoaW52YWwsIHZhZGRyLCBzaXplLCByaXNjdl9jYm9tX2Jsb2NrX3NpemUp OwogICAgICAgICAgICAgICAgYnJlYWs7CiAgICAgICAgZGVmYXVsdDoKICAgICAgICAgICAgICAg IGJyZWFrOwoKPgo+IFNpZ25lZC1vZmYtYnk6IEFybmQgQmVyZ21hbm4gPGFybmRAYXJuZGIuZGU+ Cj4gLS0tCj4gIGFyY2gvcmlzY3YvbW0vZG1hLW5vbmNvaGVyZW50LmMgfCAyICstCj4gIDEgZmls ZSBjaGFuZ2VkLCAxIGluc2VydGlvbigrKSwgMSBkZWxldGlvbigtKQo+Cj4gZGlmZiAtLWdpdCBh L2FyY2gvcmlzY3YvbW0vZG1hLW5vbmNvaGVyZW50LmMgYi9hcmNoL3Jpc2N2L21tL2RtYS1ub25j b2hlcmVudC5jCj4gaW5kZXggNjQwZjRjNDk2ZDI2Li42OWM4MGIyMTU1YTEgMTAwNjQ0Cj4gLS0t IGEvYXJjaC9yaXNjdi9tbS9kbWEtbm9uY29oZXJlbnQuYwo+ICsrKyBiL2FyY2gvcmlzY3YvbW0v ZG1hLW5vbmNvaGVyZW50LmMKPiBAQCAtMjUsNyArMjUsNyBAQCB2b2lkIGFyY2hfc3luY19kbWFf Zm9yX2RldmljZShwaHlzX2FkZHJfdCBwYWRkciwgc2l6ZV90IHNpemUsCj4gICAgICAgICAgICAg ICAgIEFMVF9DTU9fT1AoY2xlYW4sIHZhZGRyLCBzaXplLCByaXNjdl9jYm9tX2Jsb2NrX3NpemUp Owo+ICAgICAgICAgICAgICAgICBicmVhazsKPiAgICAgICAgIGNhc2UgRE1BX0JJRElSRUNUSU9O QUw6Cj4gLSAgICAgICAgICAgICAgIEFMVF9DTU9fT1AoZmx1c2gsIHZhZGRyLCBzaXplLCByaXNj dl9jYm9tX2Jsb2NrX3NpemUpOwo+ICsgICAgICAgICAgICAgICBBTFRfQ01PX09QKGNsZWFuLCB2 YWRkciwgc2l6ZSwgcmlzY3ZfY2JvbV9ibG9ja19zaXplKTsKPiAgICAgICAgICAgICAgICAgYnJl YWs7Cj4gICAgICAgICBkZWZhdWx0Ogo+ICAgICAgICAgICAgICAgICBicmVhazsKPiAtLQo+IDIu MzkuMgo+CgoKLS0gCkJlc3QgUmVnYXJkcwogR3VvIFJlbgoKX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtc25wcy1hcmMgbWFpbGluZyBsaXN0Cmxp bnV4LXNucHMtYXJjQGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5v cmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1zbnBzLWFyYwo=