linux-kernel - [PATCH 1/5] iommu/amd: Wait for completion of IOTLB flush in attach

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Date:   Tue, 10 Sep 2019 19:49:21 +0200
From:   Filippo Sironi <sironi@...zon.de>
To:     sironi@...zon.de, joro@...tes.org,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/5] iommu/amd: Wait for completion of IOTLB flush in attach_device

Signed-off-by: Filippo Sironi <sironi@...zon.de>
---
 drivers/iommu/amd_iommu.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 61de81965c44..f026a8c2b218 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2169,6 +2169,8 @@ static int attach_device(struct device *dev,
 	 */
 	domain_flush_tlb_pde(domain);
 
+	domain_flush_complete(domain);
+
 	return ret;
 }
 
-- 
2.7.4