On 23.01.19 20:14, Julien Grall wrote:
I can queue the first hunk for Xen 4.13.
For 4.13? Well I hope we will manage to upstream the whole series until then.
This statement is only correct if the IOMMU has been actively blacklisted by Xen. In the case of the SMMU driver, this is done by arm_smmu_dt_init(). The function is only called when the IOMMU has been enabled. So if you pass "iommu=disabled" to Xen commandline, the SMMU will be accessible by Dom0. When there are no drivers for the IOMMU used, then you end up to assign the IOMMU to Dom0. This means that Dom0 can use them. It does not make sense to remove the properties "iommus", "iommu-map", "iommu-map-mask" if Dom0 is already touching the IOMMU. It is either everything or nothing.
So that patch should be totally rewritten. At least to support iommu=disabled. -- Sincerely, Andrii Anisov. _______________________________________________ Xen-devel mailing list [email protected] https://lists.xenproject.org/mailman/listinfo/xen-devel
