From patchwork Thu Aug 27 09:29:54 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Song Bao Hua (Barry Song)" X-Patchwork-Id: 11740473 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2B90714F6 for ; Thu, 27 Aug 2020 09:34:37 +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 03BE020738 for ; Thu, 27 Aug 2020 09:34:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="oWaZZaEv" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 03BE020738 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=hisilicon.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.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:MIME-Version:Message-ID:Date:Subject:To:From: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=nTrWpmLtUi3Rh3+MOThl5dhfVXLYLRKVH/Zc/C8MeDo=; b=oWaZZaEv3TbHftkoIRdlFan9MZ 1uTtX6BkmpeM9IcVhzVxjNAbDtjKCg/m5qahBYu7InEpdVHym4ssARQWhYeokokLNtg34wSJsDzZp OjIYbja9sitHo1JQQ9zCCiQqlEByUm7IehcWhfPlVziUEzQffOt6kOkTl/5FnG2sBXcUj1zZboaoL vAmkGsO0vcAiAA0ou3XsuJ8umE82va2ocNxZTGEPE11frfm0MQSdA9zW1vcfCO0cFYtaa054Abdpu aj5+jTvFG8fXsEg0CHFWta7BbgoFgjM103EdiHZ12fIDbcyMLWMWBGowgheraVLus4PS01fO5d07D Xm3fw9dg==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kBEHP-0006gA-Pr; Thu, 27 Aug 2020 09:33:11 +0000 Received: from szxga06-in.huawei.com ([45.249.212.32] helo=huawei.com) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kBEHH-0006bJ-3j for linux-arm-kernel@lists.infradead.org; Thu, 27 Aug 2020 09:33:03 +0000 Received: from DGGEMS410-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 5C54037C952DABB4656A; Thu, 27 Aug 2020 17:32:54 +0800 (CST) Received: from SWX921481.china.huawei.com (10.126.200.71) by DGGEMS410-HUB.china.huawei.com (10.3.19.210) with Microsoft SMTP Server id 14.3.487.0; Thu, 27 Aug 2020 17:32:46 +0800 From: Barry Song To: , Subject: [PATCH v5 0/3] iommu/arm-smmu-v3: permit users to disable msi polling Date: Thu, 27 Aug 2020 21:29:54 +1200 Message-ID: <20200827092957.22500-1-song.bao.hua@hisilicon.com> X-Mailer: git-send-email 2.21.0.windows.1 MIME-Version: 1.0 X-Originating-IP: [10.126.200.71] X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200827_053303_391286_DA95FD24 X-CRM114-Status: UNSURE ( 7.60 ) X-CRM114-Notice: Please train this message. X-Spam-Score: 0.7 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (0.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [45.249.212.32 listed in list.dnswl.org] 0.0 RCVD_IN_MSPIKE_H4 RBL: Very Good reputation (+4) [45.249.212.32 listed in wl.mailspike.net] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders 3.0 AC_FROM_MANY_DOTS Multiple periods in From user name 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: Barry Song , robin.murphy@arm.com, joro@8bytes.org, will@kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org patch 1/3 and patch 2/3 are the preparation of patch 3/3 which permits users to disable MSI-based polling by cmd line. -v5: add Robin's reviewed-by -v4: with respect to Robin's comments * cleanup the code of the existing module parameter disable_bypass * add ARM_SMMU_OPT_MSIPOLL flag. on the other hand, we only need to check a bit in options rather than two bits in features Barry Song (3): iommu/arm-smmu-v3: replace symbolic permissions by octal permissions for module parameter iommu/arm-smmu-v3: replace module_param_named by module_param for disable_bypass iommu/arm-smmu-v3: permit users to disable msi polling drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-)