Received: by 2002:a05:6a10:8c0a:0:0:0:0 with SMTP id go10csp3032023pxb; Sun, 28 Feb 2021 22:57:22 -0800 (PST) X-Google-Smtp-Source: ABdhPJx9E/7AjFIIIwtSBNVGvULxFxVGVbMalmYjG2lPuCDEae6ajU5JYJwVBFdBSeSitnQRcd28 X-Received: by 2002:aa7:cf16:: with SMTP id a22mr14587102edy.288.1614581842274; Sun, 28 Feb 2021 22:57:22 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1614581842; cv=none; d=google.com; s=arc-20160816; b=IwucbFV6a6uY0Tr8eLOlJ/eF55PraEkwk22L6ygcdmqfwTvFZaqQ+aiAqSKpP6Zx/L Mfwxb3LgKh/TA4uUknLEPgX94v8TR+RjbyutdmdlGufNhQerdJ6zYmEyiVVcqpt7v5ZK wFpz2CYpO3CG7nLGYX+5ej98sU7XqU1fBFxp+8oCBYtGJNlz3AlHumGes5mYyCSVgCjZ HPwGzh69cFw1DiVSbhly9kzLhxG3V5wN7HvJv2JrM4OY/9KmimAphYpKbzIjsOp73gjX VyVDBslOU4W5jzI9qFmfP937gtDpYcP+13M9vQSfwiI3rcHGY6XZMK/y7erxMDtOHBQN wVlw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:dkim-signature; bh=gBs6DNze8G5n1XddfCf4tpaY7/fmzfb1f0K+dmwmvuc=; b=ErxqvmOfSX0v21ACTiuZE1zdDGB6sLWMC8TXtCeWJx9iaebVyf/Oyk9cte+6mKSfB9 dujf7sYley7fAk2EdEM0eZDABIm+340QuRGi63/7Mp4MXB4Si+ugyfoRr6eqRQcAJDhd Us9nmOposfKf6mfx2MqkzxRbCeJpYN+BRURZWAbjMy7LF/dYqeWo60Cd+Rn0s84n5oKQ fNMOFaevuf7T0gPqNBpQGrGLJKku9GlstJJg76Xxt3uOPH7r8R5ANGR4W+WF0jGs7/LF OdEnOz3RppUlygewNtiRMStLuBafP5iaYHx1cvOWwSU+ZS0w7W5wJiaJ2NO4eBI7Y47t JKKg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@infradead.org header.s=casper.20170209 header.b=dfzfy5st; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id b19si11068593edd.84.2021.02.28.22.57.00; Sun, 28 Feb 2021 22:57:22 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@infradead.org header.s=casper.20170209 header.b=dfzfy5st; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232117AbhCAGz4 (ORCPT + 99 others); Mon, 1 Mar 2021 01:55:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54642 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232113AbhCAGzx (ORCPT ); Mon, 1 Mar 2021 01:55:53 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DF755C06174A; Sun, 28 Feb 2021 22:55:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=gBs6DNze8G5n1XddfCf4tpaY7/fmzfb1f0K+dmwmvuc=; b=dfzfy5stjvI7W7v3XjXRUOXOvK 7J1UhRdmoct7nkH+fyCAiaaErmhozT+cKh3yHQaTBFeua10+89hUM7qzp490onUo2+Y9oyuBnlUYM urGMQCa5w2sotJ+1g82Oq773SI7lOvR+EdMeuj67UU1PYhbqeBpbFu2RgI7GoFioC1U0XUAV2Pap6 /S7+aNK48TXenacgOF/kXY8swzIvAfK5CUbOyuAsUXZhZAyCdkon+0kpv7SlX5tpOvngNAQhYZ5FH aJEOQfQQC3jk5O6Y5nNNlmTbafKjRxCM0LTb01xKHz7/KS7LxgFXK38RckQeqVpP300O8/PDYcUkq GsBKIjQA==; Received: from hch by casper.infradead.org with local (Exim 4.94 #2 (Red Hat Linux)) id 1lGcSE-00FOax-Gd; Mon, 01 Mar 2021 06:54:55 +0000 Date: Mon, 1 Mar 2021 06:54:54 +0000 From: Christoph Hellwig To: Tianyu Lan Cc: kys@microsoft.com, haiyangz@microsoft.com, sthemmin@microsoft.com, wei.liu@kernel.org, jejb@linux.ibm.com, martin.petersen@oracle.com, Tianyu Lan , linux-hyperv@vger.kernel.org, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, vkuznets@redhat.com, thomas.lendacky@amd.com, brijesh.singh@amd.com, sunilmut@microsoft.com Subject: Re: [RFC PATCH 12/12] HV/Storvsc: Add bounce buffer support for Storvsc Message-ID: <20210301065454.GA3669027@infradead.org> References: <20210228150315.2552437-1-ltykernel@gmail.com> <20210228150315.2552437-13-ltykernel@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210228150315.2552437-13-ltykernel@gmail.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This should be handled by the DMA mapping layer, just like for native SEV support.