From patchwork Mon Mar 18 13:12:41 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhen Lei X-Patchwork-Id: 10857603 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 728EA139A for ; Mon, 18 Mar 2019 13:15:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5191528399 for ; Mon, 18 Mar 2019 13:15:18 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 45DF028590; Mon, 18 Mar 2019 13:15:18 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id D6BE228399 for ; Mon, 18 Mar 2019 13:15:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.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=hwRoB2FAfmiT5OjSYhr4csVcb18QxqksoUzJjFJRKJ8=; b=dDx5LCOt8nzlI7 vTrLwCANSm/6UQAJJyprfKMWeU2zYTxC4CGimLJco0lvLAeejcbpW881wrtg5kH2fMXJtZKrJGXMI jtT9VOv5kl20PhGrTOLbx4yEr51Vqqu95+UOQSWcGwURys+E3YoQ3shuTtBvBa6sEVzoih3fBsfdH 1wv4UO8SIeaQuJ/u/68/vq7edjAkM+ehpn+80BOwVhzbv9PJR+gMWkiVAJp20uq8dba+elUmBo+DK mroKFAM14agbYzjR5Uf9N2bx1dzC41w6ZKTWeRwmoFpt2FZkicIqqJCQ+wXCQrK0x9XYY1ZDyyLQ4 t+t2CdM0xsxJvApdoVAQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1h5s6j-0008NS-Td; Mon, 18 Mar 2019 13:15:13 +0000 Received: from szxga06-in.huawei.com ([45.249.212.32] helo=huawei.com) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1h5s6A-0007KF-2d for linux-arm-kernel@lists.infradead.org; Mon, 18 Mar 2019 13:14:41 +0000 Received: from DGGEMS408-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id E92BC38E2A6F7778E402; Mon, 18 Mar 2019 21:14:22 +0800 (CST) Received: from HGHY1l002753561.china.huawei.com (10.177.23.164) by DGGEMS408-HUB.china.huawei.com (10.3.19.208) with Microsoft SMTP Server id 14.3.408.0; Mon, 18 Mar 2019 21:14:16 +0800 From: Zhen Lei To: Jean-Philippe Brucker , Robin Murphy , Will Deacon , Joerg Roedel , linux-arm-kernel , iommu , linux-kernel Subject: [PATCH v2 0/2] iommu/arm-smmu-v3: make sure the kdump kernel can work well when smmu is enabled Date: Mon, 18 Mar 2019 21:12:41 +0800 Message-ID: <20190318131243.20716-1-thunder.leizhen@huawei.com> X-Mailer: git-send-email 2.19.2.windows.1 MIME-Version: 1.0 X-Originating-IP: [10.177.23.164] X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190318_061438_664794_40F8B46B X-CRM114-Status: UNSURE ( 8.93 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Zhen Lei Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP v1 --> v2: 1. Drop part2. Now, we only use the SMMUv3 hardware feature STE.config=0b000 (Report abort to device, no event recorded) to suppress the event messages caused by the unexpected devices. 2. rewrite the patch description. v1: This patch series include two parts: 1. Patch1-2 use dummy STE tables with "ste abort" hardware feature to abort unexpected devices accessing. For more details, see the description in patch 2. 2. If the "ste abort" feature is not support, force the unexpected devices in the secondary kernel to use the memory maps which it used in the first kernel. For more details, see patch 5. Zhen Lei (2): iommu/arm-smmu-v3: make sure the stale caching of L1STD are invalid iommu/arm-smmu-v3: to make smmu can be enabled in the kdump kernel drivers/iommu/arm-smmu-v3.c | 88 +++++++++++++++++++++++++++++++++------------ 1 file changed, 65 insertions(+), 23 deletions(-) Tested-by: Bhupesh Sharma Tested-by: Matthias Brugger