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=-1.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,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 B3AC4C433E1 for ; Thu, 9 Jul 2020 07:33:39 +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 834E7207C4 for ; Thu, 9 Jul 2020 07:33:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="rN1zGmVq"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="FgM48asA" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 834E7207C4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org 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=wpTx7JTWu6H95nJjhlyBmgvLzMgV2HKKt8GxzU1xSh0=; b=rN1zGmVqfJoLqT0U5TCsbzLtI YgJ9tpeiF3p5QBx4KpeuQ8lGtguV6PtFvc8FqCfRdJRJuKoNjJSbSl7Jp7VgCU87Uz98x3IGXO6qD 8W8pYKzLIHy5M0f22JmcXDADfnMPDWWy8sbQuCwJDjv53JclN9qrA66SSIfUyeeA+tU/jbBas+sUo oAb9w3O4uInIZD5iE88fotahFUxwLVgcHDpw9cWd8dQgqu4igf3GY+WA1asi1uF7I6atBycaFcTkj ensgzBo8DU0x/p34SpyEBLASGp6qggvnZudum4gB8Y6xkOIJdUKnpZ4oQGz8FHZF+o6vFW5w0dfoY nUxLPZbYg==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jtR2X-00037E-Om; Thu, 09 Jul 2020 07:32:17 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jtR2V-00036r-9X for linux-arm-kernel@lists.infradead.org; Thu, 09 Jul 2020 07:32:15 +0000 Received: from localhost (unknown [122.182.251.219]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C24F220767; Thu, 9 Jul 2020 07:32:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594279934; bh=osjNtW7Vcsl6XAmexC2cVHsdXszVbxZeargjrRySMuA=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=FgM48asAEyYqqo3pNtHvbbzcmAGnCiHesy6730e5O/fCk7lM/Mi80rry/VUTwf9fP iCxgGhQv7KrE3E5FzDK+J74umYvxzhuYbw2wsqKAURVMoT3Xvwa/Bh2wzI0j2DeJog InFdiK7M+/Xf97CQNv+GgyzC6wUOhANqppmEsb/M= Date: Thu, 9 Jul 2020 13:02:04 +0530 From: Vinod Koul To: Bjorn Andersson Subject: Re: [PATCH 4/5] iommu/arm-smmu-qcom: Consstently initialize stream mappings Message-ID: <20200709073204.GH34333@vkoul-mobl> References: <20200709050145.3520931-1-bjorn.andersson@linaro.org> <20200709050145.3520931-5-bjorn.andersson@linaro.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200709050145.3520931-5-bjorn.andersson@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200709_033215_415259_52788446 X-CRM114-Status: GOOD ( 10.25 ) 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: Jonathan Marek , Will Deacon , Joerg Roedel , linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, Thierry Reding , linux-arm-msm@vger.kernel.org, Robin Murphy , linux-arm-kernel@lists.infradead.org, Laurentiu Tudor 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 On 08-07-20, 22:01, Bjorn Andersson wrote: > Firmware that traps writes to S2CR to translate BYPASS into FAULT also > ignores writes of type FAULT. As such booting with "disable_bypass" set > will result in all S2CR registers left as configured by the bootloader. > > This has been seen to result in indeterministic results, as these > mappings might linger and reference context banks that Linux is > reconfiguring. > > Use the fact that BYPASS writes result in FAULT type to force all stream > mappings to FAULT. s/Consstently/Consistently in patch subject -- ~Vinod _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel