Received: by 2002:a05:6a10:22f:0:0:0:0 with SMTP id 15csp102647pxk; Fri, 11 Sep 2020 01:23:09 -0700 (PDT) X-Google-Smtp-Source: ABdhPJw7RJn0+h1YUB3gxLnJGXtwo0Deeh8EUTZvDqGUAYJPaOgbm1T5Nzy1bQOVfmd7FIvetAE9 X-Received: by 2002:a17:906:1b55:: with SMTP id p21mr966212ejg.457.1599812589541; Fri, 11 Sep 2020 01:23:09 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1599812589; cv=none; d=google.com; s=arc-20160816; b=VXaorQ46+rPdXiJESCHIxzlgKhqkosv//DWB7SWdl7Z3QUYNVCXMkerACV2NHsVmWo YLFQjALPPdw+t7LjfAaPSbc4iH43Ju49t9vrQWrW4QIr3HI+OfhQCkCas8BjwjXaX1gY R1QO4uo63XhIZJC2LIzoG+BauzANzTkKlXu5RD5Y5TpfhdE39hhrPl9Ii1urQOSIsPbq ptvrMyXC4z+C5Li9iX/Kz5uJEHbXgrgud9N0b2ddPGj0SPRqMcazw0zGMi4vvdNABo0Y YQxvCG0BKcYSomsGB9vm5QldUxqX5h4o9eXm2oDk6NLtQaG/Zyj4xGlCdtJHMe1jU9MC tlwg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:feedback-id:user-agent:message-id :references:in-reply-to:subject:cc:to:from:date :content-transfer-encoding:mime-version:dkim-signature :dkim-signature; bh=64A4slLMGz9gzx1Iqy1xOlEGyHjanyBWol9tOypi0tE=; b=B2eDmqJwSdoZhWGIU8uLJXIs6VXeRrY8nTRcMN+LArqAYp38aQ99zsLVvmRJfrTYuP oVwQt4cWe6OXrkoEZwHvfAT9TpKM9N5ZlXvOwwxUds4G61lPSSRn7A37Q4yoiiy10xm3 bLE57txJ/Aj01DU20SiEwzSLjF81gWAS7r7l6QcyiAVe6Dqb1riGX6c/FogCP4+0vhP6 c2a8TdzL0bIj5t2imEolOLQ4lrKRhby1bIUvmTRf1M4vM5I7BXy7GW5NjdqxqkegvGyX doLm8O74hChBhwYWnMnzWOuSDghQgsd3gzTnKTX9kAFB6IrJb/OL1/w1ynlntFHheDC4 Higw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@codeaurora.org header.s=zsmsymrwgfyinv5wlfyidntwsjeeldzt header.b="S4KMg/sB"; dkim=pass header.i=@amazonses.com header.s=hsbnp7p3ensaochzwyq5wwmceodymuwv header.b=g1pbyM2m; 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 t21si805308edv.284.2020.09.11.01.22.46; Fri, 11 Sep 2020 01:23:09 -0700 (PDT) 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=@codeaurora.org header.s=zsmsymrwgfyinv5wlfyidntwsjeeldzt header.b="S4KMg/sB"; dkim=pass header.i=@amazonses.com header.s=hsbnp7p3ensaochzwyq5wwmceodymuwv header.b=g1pbyM2m; 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 S1725796AbgIKIVx (ORCPT + 99 others); Fri, 11 Sep 2020 04:21:53 -0400 Received: from a27-21.smtp-out.us-west-2.amazonses.com ([54.240.27.21]:36166 "EHLO a27-21.smtp-out.us-west-2.amazonses.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725562AbgIKIVu (ORCPT ); Fri, 11 Sep 2020 04:21:50 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/simple; s=zsmsymrwgfyinv5wlfyidntwsjeeldzt; d=codeaurora.org; t=1599812509; h=MIME-Version:Content-Type:Content-Transfer-Encoding:Date:From:To:Cc:Subject:In-Reply-To:References:Message-ID; bh=qsGVIC41HDalGoHN3eDwDtBTI6dMXbAdP5OWRu78vaU=; b=S4KMg/sBG5+tKtKDwGOxV04UnPiTDJWFq5neNbuXlOoFU34SoOhTNI0b9jbPgszq 97YF+ZmNvFmCWv2aUWK52cWdsesmwbfnt4DsG24UJGuuJV3dk7nQjhu562WKjomHoEL LBdfVjEK6MviULaEKJMIQRarKZN+YoEoj2mauCZc= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/simple; s=hsbnp7p3ensaochzwyq5wwmceodymuwv; d=amazonses.com; t=1599812509; h=MIME-Version:Content-Type:Content-Transfer-Encoding:Date:From:To:Cc:Subject:In-Reply-To:References:Message-ID:Feedback-ID; bh=qsGVIC41HDalGoHN3eDwDtBTI6dMXbAdP5OWRu78vaU=; b=g1pbyM2mGPRzFJW/OOR684lg916DMBY/vyZmakaH1JH1kN/XyTfcbxNufx4ukbET CqINHvMsMmvhc30vOA2YLBkKv8dGByPN6B4iYqGL9I8SLi5Q4Y119zHX/ZOfLxvwfGQ KJ0VN+xU9tvuV/rthW/q1V/uuJ8jSAdVOx/D5vgY= X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=ALL_TRUSTED,BAYES_00, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Date: Fri, 11 Sep 2020 08:21:49 +0000 From: Sai Prakash Ranjan To: Bjorn Andersson Cc: Will Deacon , Robin Murphy , Joerg Roedel , Jordan Crouse , Rob Clark , Sibi Sankar , linux-arm-kernel@lists.infradead.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org Subject: Re: [PATCH v3 3/8] iommu/arm-smmu: Consult context bank allocator for identify domains In-Reply-To: <20200904155513.282067-4-bjorn.andersson@linaro.org> References: <20200904155513.282067-1-bjorn.andersson@linaro.org> <20200904155513.282067-4-bjorn.andersson@linaro.org> Message-ID: <010101747c419fc3-f938605d-df63-4905-b97f-f9077b04ffee-000000@us-west-2.amazonses.com> X-Sender: saiprakash.ranjan@codeaurora.org User-Agent: Roundcube Webmail/1.3.9 X-SES-Outgoing: 2020.09.11-54.240.27.21 Feedback-ID: 1.us-west-2.CZuq2qbDmUIuT3qdvXlRHZZCpfZqZ4GtG9v3VKgRyF0=:AmazonSES Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2020-09-04 21:25, Bjorn Andersson wrote: > For implementations of the ARM SMMU where stream mappings of bypass > type > are prohibited identity domains can be implemented by using context > banks with translation disabled. > > Postpone the decision to skip allocating a context bank until the > implementation specific context bank allocator has been consulted and > if > it decides to use a context bank for the identity map, don't enable > translation (i.e. omit ARM_SMMU_SCTLR_M). > > Signed-off-by: Bjorn Andersson > --- > Minor nit in the subject: identify -> identity Reviewed-by: Sai Prakash Ranjan Tested-by: Sai Prakash Ranjan -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation