On Sun, May 20, 2012 at 12:15:11PM +0300, Ohad Ben-Cohen wrote:
> Sometimes a single IOMMU user may have to deal with several
> different IOMMU devices (e.g. remoteproc).
>
> When an IOMMU fault happens, such users have to regain their
> context in order to deal with the fault.
>
> Users can't use the private fields of either the iommu_domain or
> the IOMMU device, because those are already used by the IOMMU core
> and low level driver (respectively).
>
> This patch just simply allow users to pass a private token (most
> notably their own context pointer) to iommu_set_fault_handler(),
> and then makes sure it is provided back to the users whenever
> IOMMU faults happen.
>
> Signed-off-by: Ohad Ben-Cohen <[email protected]>
May break compilation for !CONFIG_IOMMU_API. Where is remoteproc
changed? As far as I can see this is the only user of
iommu_set_fault_handler().
Joerg
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