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=-14.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 1BE9BC433DB for ; Thu, 7 Jan 2021 14:23:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C309622EBF for ; Thu, 7 Jan 2021 14:23:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728734AbhAGOXl (ORCPT ); Thu, 7 Jan 2021 09:23:41 -0500 Received: from mail.kernel.org ([198.145.29.99]:43012 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725894AbhAGOXl (ORCPT ); Thu, 7 Jan 2021 09:23:41 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 028F223355; Thu, 7 Jan 2021 14:22:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1610029374; bh=oNLPJObW2d3YofpkNjkaRbAPG15OxVo1dNrFQ+tYOAk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vRO705TTCihW/nt+W1NTwTO30dWw+FCwmHKdGwCkUKgJIePLYAgeMuT7Z5ZzQ+IWn HAecnqHoHDkHHAr+gdxLjoRDxDrI9UJwRSs4s+MkMC5lT/KvTbJ2I2B0KXxFutYKYT bDPXEuPIvgn6uQy6hFIKM8cdCtaEgyJ2/UZC7/BPqCzHus/RwOSFAMDVuQ4JRBqpcq +zSrbG69307ZWYgkOvqm42COAzZIP2Jw19THIvwdobP2YJfXjDAuT0GQtHuyW8vPHT B2thw+fGL1JLK+qn+FJx+afc6yWSTv8I42k0BsZdte5J3ov0uO18kAZD/KmIJ4L+IY Ks0qTuF9ZtQYA== From: Will Deacon To: Joerg Roedel , Bjorn Andersson , Robin Murphy Cc: catalin.marinas@arm.com, kernel-team@android.com, Will Deacon , Sai Prakash Ranjan , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, iommu@lists.linux-foundation.org Subject: Re: [PATCH] iommu/arm-smmu-qcom: Initialize SCTLR of the bypass context Date: Thu, 7 Jan 2021 14:22:47 +0000 Message-Id: <161002864635.3143366.6483038182849083276.b4-ty@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210106005038.4152731-1-bjorn.andersson@linaro.org> References: <20210106005038.4152731-1-bjorn.andersson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org On Tue, 5 Jan 2021 16:50:38 -0800, Bjorn Andersson wrote: > On SM8150 it's occasionally observed that the boot hangs in between the > writing of SMEs and context banks in arm_smmu_device_reset(). > > The problem seems to coincide with a display refresh happening after > updating the stream mapping, but before clearing - and there by > disabling translation - the context bank picked to emulate translation > bypass. > > [...] Applied to arm64 (for-next/iommu/fixes), thanks! [1/1] iommu/arm-smmu-qcom: Initialize SCTLR of the bypass context https://git.kernel.org/arm64/c/aded8c7c2b72 Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev