linux-kernel - iommu/amd: Flushing and locking fixes

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Message-Id: <1568137765-20278-1-git-send-email-sironi@amazon.de>
Date:   Tue, 10 Sep 2019 19:49:20 +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: iommu/amd: Flushing and locking fixes

This patch series introduce patches to take the domain lock whenever we call
functions that end up calling __domain_flush_pages.  Holding the domain lock is
necessary since __domain_flush_pages traverses the device list, which is
protected by the domain lock.

The first patch in the series adds a completion right after an IOTLB flush in
attach_device.