linux-kernel - Re: [PATCH] iommu/rockchip: Make use of 'struct iommu

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Date:   Mon, 3 Apr 2017 13:07:58 +0200
From:   Joerg Roedel <joro@...tes.org>
To:     Heiko Stübner <heiko@...ech.de>
Cc:     iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Joerg Roedel <jroedel@...e.de>
Subject: Re: [PATCH] iommu/rockchip: Make use of 'struct iommu_device'

Hey Heiko,

On Mon, Apr 03, 2017 at 11:56:59AM +0200, Heiko Stübner wrote:
> In general works, and I still keep a working iommu-based display :-)
> I can also see my two vop iommus under /sys/class/iommu now.

Great, thanks for testing that patch!

> Links in the devices subdirectory do not work though, see below:

Okay, thats bad, but I think its nothing we should work around right
now. My goal with this work is to have a per-iommu check-device
call-back to bind devices to iommus in the core code.

This will also solve the probe-ordering issue and we are fine again. We
just call check-device then for every device on the bus that has no
iommu already when the iommu is registered and create the links at that
time.

	Joerg