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 X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9A135C433DF for ; Mon, 6 Jul 2020 13:58:39 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6CDBE20715 for ; Mon, 6 Jul 2020 13:58:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="sT7qq5lV" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6CDBE20715 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lunn.ch Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=yqZhKYMndoq7hUsgefM6I6mZ6TgzlJ3vEDAkWegXeeo=; b=sT7qq5lV0SHxDqSDF7m47FuP+ nVpzyMnNybojXX2KEHirhhOJ/4bU71M3Wq0TIe/mgcJGk60HgQu61nUixW2t6704oObTxEcBNNORU z/owWw3DOPoGUl0tPSvBXM+HpQli91JVlLJKWoZ5DBHvv+ROFFbMo8rjhhXUbTKLQIh2mz7Lx2awL kPR+9t77KioywRqB+zTWbEK+Q4UI5NvsFYWmT5i87me0wBzkWaez8S9OsQJckzGxUr9HDgvJkUar8 J5omumnQ8EqNMvG1ntqvwhksC5DgyLnDHjbZS6R9X+ctadzQsorOzsjqwybBIwWxwWYtpkldlpPlD fTvWMGrww==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jsRce-0000WD-R9; Mon, 06 Jul 2020 13:57:28 +0000 Received: from vps0.lunn.ch ([185.16.172.187]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jsRcb-0000Vj-V4 for linux-arm-kernel@lists.infradead.org; Mon, 06 Jul 2020 13:57:27 +0000 Received: from andrew by vps0.lunn.ch with local (Exim 4.94) (envelope-from ) id 1jsRcT-003rgn-D2; Mon, 06 Jul 2020 15:57:17 +0200 Date: Mon, 6 Jul 2020 15:57:17 +0200 From: Andrew Lunn To: Diana Craciun Subject: Re: [PATCH v3 03/13] bus/fsl-mc: add support for 'driver_override' in the mc-bus Message-ID: <20200706135717.GB919533@lunn.ch> References: <20200706124243.10697-1-diana.craciun@nxp.com> <20200706124243.10697-4-diana.craciun@nxp.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200706124243.10697-4-diana.craciun@nxp.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200706_095726_014278_857DA9A2 X-CRM114-Status: GOOD ( 11.10 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: stuyoder@gmail.com, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, leoyang.li@nxp.com, bharatb.linux@gmail.com, Diana Craciun , Bharat Bhushan , linux-arm-kernel@lists.infradead.org, laurentiu.tudor@nxp.com 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 Hi Diana On Mon, Jul 06, 2020 at 03:42:33PM +0300, Diana Craciun wrote: > From: Bharat Bhushan > > This patch is required for vfio-fsl-mc meta driver to successfully bind > layerscape container devices for device passthrough. This patch adds > a mechanism to allow a layerscape device to specify a driver rather than > a layerscape driver provide a device match. > > Example to allow a device (dprc.1) to specifically bind > with driver (vfio-fsl-mc):- > - echo vfio-fsl-mc > /sys/bus/fsl-mc/devices/dprc.1/driver_override > - echo dprc.1 > /sys/bus/fsl-mc/drivers/fsl_mc_dprc/unbind > - echo dprc.1 > /sys/bus/fsl-mc/drivers/vfio-fsl-mc/bind Something i asked before, why is this buried in a driver, when it could be put in the driver core. This is not the only driver doing this, so it does make sense to share the code and bugs. Andrew _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel