linux-kernel - Re: [PATCH 2/2] thunderbolt: Initialize after IOMMUs

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Message-ID: <20180914075228.GQ14465@lahna.fi.intel.com>
Date:   Fri, 14 Sep 2018 10:52:28 +0300
From:   Mika Westerberg <mika.westerberg@...ux.intel.com>
To:     linux-kernel@...r.kernel.org
Cc:     Andreas Noever <andreas.noever@...il.com>,
        Michael Jamet <michael.jamet@...el.com>,
        Yehezkel Bernat <YehezkelShB@...il.com>,
        Lukas Wunner <lukas@...ner.de>,
        Lu Baolu <baolu.lu@...ux.intel.com>
Subject: Re: [PATCH 2/2] thunderbolt: Initialize after IOMMUs

On Mon, Sep 03, 2018 at 04:20:12PM +0300, Mika Westerberg wrote:
> If IOMMU is enabled and Thunderbolt driver is built into the kernel
> image, it will be probed before IOMMUs are attached to the PCI bus.
> Because of this DMA mappings the driver does will not go through IOMMU
> and start failing right after IOMMUs are enabled.
> 
> For this reason move the Thunderbolt driver initialization happen at
> rootfs level.
> 
> Signed-off-by: Mika Westerberg <mika.westerberg@...ux.intel.com>

Applied to thunderbolt.git/fixes.