tree c2257cacb3a09ba76d1914dde9c2b8f494237a20
parent 820f96cba5c286340c367b9dfb9be03573d65ee0
author Jason Gunthorpe <jgg@nvidia.com> 1682449455 -0300
committer Lee Jones <joneslee@google.com> 1688392041 +0100

UPSTREAM: iommu/amd: Add missing domain type checks

Drivers are supposed to list the domain types they support in their
domain_alloc() ops so when we add new domain types, like BLOCKING or SVA,
they don't start breaking.

This ended up providing an empty UNMANAGED domain when the core code asked
for a BLOCKING domain, which happens to be the fallback for drivers that
don't support it, but this is completely wrong for SVA.

Check for the DMA types AMD supports and reject every other kind.

Bug: 254441685
Fixes: 136467962e49 ("iommu: Add IOMMU SVA domain support")
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/0-v1-2ac37b893728+da-amd_check_types_jgg@nvidia.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
(cherry picked from commit 29f54745f24547a84b18582e054df9bea1a7bf3e)
Signed-off-by: Lee Jones <joneslee@google.com>
Change-Id: Id103dd8992f7a094e47ab5878c969dafe5c26f25