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=-3.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 B8EB4C4CEC9 for ; Thu, 19 Sep 2019 00:50:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8627A218AF for ; Thu, 19 Sep 2019 00:50:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="dsvU98HY" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387438AbfISAuK (ORCPT ); Wed, 18 Sep 2019 20:50:10 -0400 Received: from mail-pg1-f195.google.com ([209.85.215.195]:40401 "EHLO mail-pg1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730302AbfISAuK (ORCPT ); Wed, 18 Sep 2019 20:50:10 -0400 Received: by mail-pg1-f195.google.com with SMTP id w10so832061pgj.7 for ; Wed, 18 Sep 2019 17:50:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=message-id:mime-version:content-transfer-encoding:in-reply-to :references:cc:to:from:subject:user-agent:date; bh=szuMCQn4rttr5Elca80oSLyqr8pMoCySJeOydbql8kI=; b=dsvU98HYe8f100cpwvVJP1d+QcBb4ryTBqN+tS63dnQ1/1mYOoJ6yKvM1fPJh88Dex wo8LxZ6m00muwQXYfkNdonytuwDzOKosfum4GptdYiB3AnKRoMzlbGlRBE1LOKdYYxhP mz3HfCUIosQA6JLRHOfkf6HzfPbVxXBatTlWM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:message-id:mime-version :content-transfer-encoding:in-reply-to:references:cc:to:from:subject :user-agent:date; bh=szuMCQn4rttr5Elca80oSLyqr8pMoCySJeOydbql8kI=; b=gFpvGDP6Uz2vNKe5OrVbGGWeI+71KjfsYJqxVPZWnPro4qdh4vEYdZ8ktJwhlRK6IF 4jlZLqetE0pwpDeVHXCSvqKvn3x7FTDEtk/wwrENEz1XEYeNrbUg0z4RB8mMz4p2ZGx8 4MVPmbJU6LUUUmdrmdvJaLDgPyOpckxgesq6bT5wURGajIyvACI4Nafq9rPF02VSOKbd q06XhVjkhFYE11x6cc5o0vFjnfYjrpx7Z+Nzk9p6k5zigowVhJ1n36sqXI8V36nB0ijv qMCaLh8UIeIarfC++AmxvgLDtHdnGdZsG0y54nOhFAL+LTfLi5l7UVP0BwxKn9ZjWmHU JOKw== X-Gm-Message-State: APjAAAVmfDS7reQeANB2eqYChHA2Yf/mv4V8+qOIcpKV/iw6K+Veaevg qqE27/lWCz2E06BZGn/Ws3x/9g== X-Google-Smtp-Source: APXvYqwwUE/+1mBEfp4DK/H8YE+W8UmNVfqmsjbBZwaUdEjDPGEWhaG6E7Bk1StoTVGsI6Wj88GrmA== X-Received: by 2002:a65:57ca:: with SMTP id q10mr6781384pgr.52.1568854209372; Wed, 18 Sep 2019 17:50:09 -0700 (PDT) Received: from chromium.org ([2620:15c:202:1:fa53:7765:582b:82b9]) by smtp.gmail.com with ESMTPSA id f6sm6663996pga.50.2019.09.18.17.50.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Sep 2019 17:50:08 -0700 (PDT) Message-ID: <5d82d0c0.1c69fb81.93841.042e@mx.google.com> Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable In-Reply-To: References: Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Rajendra Nayak , Sai Prakash Ranjan To: Andy Gross , Joerg Roedel , Robin Murphy , Sai Prakash Ranjan , Vivek Gautam , Will Deacon , bjorn.andersson@linaro.org, iommu@lists.linux-foundation.org From: Stephen Boyd Subject: Re: [PATCHv6 1/3] firmware: qcom_scm-64: Add atomic version of qcom_scm_call User-Agent: alot/0.8.1 Date: Wed, 18 Sep 2019 17:50:07 -0700 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Quoting Sai Prakash Ranjan (2019-09-17 02:45:02) > From: Vivek Gautam >=20 > There are scnenarios where drivers are required to make a > scm call in atomic context, such as in one of the qcom's > arm-smmu-500 errata [1]. >=20 > [1] ("https://source.codeaurora.org/quic/la/kernel/msm-4.9/ > tree/drivers/iommu/arm-smmu.c?h=3Dmsm-4.9#n4842") >=20 > Signed-off-by: Vivek Gautam > Reviewed-by: Bjorn Andersson > Signed-off-by: Sai Prakash Ranjan > --- Reviewed-by: Stephen Boyd