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[209.132.180.67]) by mx.google.com with ESMTP id n6-v6si22708356pgt.268.2018.08.14.18.32.42; Tue, 14 Aug 2018 18:32:42 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727861AbeHOEWc (ORCPT + 32 others); Wed, 15 Aug 2018 00:22:32 -0400 Received: from szxga07-in.huawei.com ([45.249.212.35]:44777 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726300AbeHOEWc (ORCPT ); Wed, 15 Aug 2018 00:22:32 -0400 Received: from DGGEMS402-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id 86C3FCE974D48; Wed, 15 Aug 2018 09:32:35 +0800 (CST) Received: from localhost (10.177.23.164) by DGGEMS402-HUB.china.huawei.com (10.3.19.202) with Microsoft SMTP Server id 14.3.399.0; Wed, 15 Aug 2018 09:32:27 +0800 From: Zhen Lei To: Robin Murphy , Will Deacon , Joerg Roedel , linux-arm-kernel , iommu , linux-kernel CC: Zhen Lei , LinuxArm , Hanjun Guo , Libin , "John Garry" Subject: [PATCH v5 1/5] iommu/arm-smmu-v3: fix the implementation of flush_iotlb_all hook Date: Wed, 15 Aug 2018 09:28:26 +0800 Message-ID: <1534296510-12888-2-git-send-email-thunder.leizhen@huawei.com> X-Mailer: git-send-email 1.9.5.msysgit.0 In-Reply-To: <1534296510-12888-1-git-send-email-thunder.leizhen@huawei.com> References: <1534296510-12888-1-git-send-email-thunder.leizhen@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.177.23.164] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org .flush_iotlb_all can not just wait for previous tlbi operations to be completed, but should also invalid all TLBs of the related domain. Signed-off-by: Zhen Lei Reviewed-by: Robin Murphy --- drivers/iommu/arm-smmu-v3.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) -- 1.8.3 diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 1d64710..4402187 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -1770,6 +1770,14 @@ static int arm_smmu_map(struct iommu_domain *domain, unsigned long iova, return ops->unmap(ops, iova, size); } +static void arm_smmu_flush_iotlb_all(struct iommu_domain *domain) +{ + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + + if (smmu_domain->smmu) + arm_smmu_tlb_inv_context(smmu_domain); +} + static void arm_smmu_iotlb_sync(struct iommu_domain *domain) { struct arm_smmu_device *smmu = to_smmu_domain(domain)->smmu; @@ -1998,7 +2006,7 @@ static void arm_smmu_put_resv_regions(struct device *dev, .map = arm_smmu_map, .unmap = arm_smmu_unmap, .map_sg = default_iommu_map_sg, - .flush_iotlb_all = arm_smmu_iotlb_sync, + .flush_iotlb_all = arm_smmu_flush_iotlb_all, .iotlb_sync = arm_smmu_iotlb_sync, .iova_to_phys = arm_smmu_iova_to_phys, .add_device = arm_smmu_add_device,