Commit 0ddfa755 authored Sep 10, 2019 by Filippo Sironi Committed by Greg Kroah-Hartman Jan 27, 2020

iommu/amd: Wait for completion of IOTLB flush in attach_device



[ Upstream commit 0b15e02f0cc4fb34a9160de7ba6db3a4013dc1b7 ]

To make sure the domain tlb flush completes before the
function returns, explicitly wait for its completion.

Signed-off-by: Filippo Sironi <sironi@amazon.de>
Fixes: 42a49f96 ("amd-iommu: flush domain tlb when attaching a new device")
[joro: Added commit message and fixes tag]
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent 7e5a18b3

drivers/iommu/amd_iommu.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -2153,6 +2153,8 @@ static int attach_device(struct device *dev,
		*/
		domain_flush_tlb_pde(domain);

		domain_flush_complete(domain);

		return ret;
		}