Hi,
while reviewing another IOMMU driver again I came across a problem in
the IOMMU drivers for OMAP and MSM platforms. In both drivers the
'domain_destroy with devices attached' case isn't handled correctly.
OMAP driver seems not to track the devices attached to a domain at all.
So when a domain is destroyed it can happen that the hardware still
references old (and already freed) page-table pointers.
MSM tracks devices in a domain, but does not automatically remove the
devices from a domain that is about to be destroyed.
Please tell me when I mis-read the code, otherwise please fix this in
your drivers so that we can get consistent behavior for IOMMU-API
users :-)
Thanks,
Joerg
--
AMD Operating System Research Center
Advanced Micro Devices GmbH Einsteinring 24 85609 Dornach
General Managers: Alberto Bozzo
Registration: Dornach, Landkr. Muenchen; Registerger. Muenchen, HRB Nr. 43632
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