iommu/vt-d: Move intel_iommu info from struct intel_svm to struct intel_svm_dev

'struct intel_svm' is shared by all devices bound to a give process,
but records only a single pointer to a 'struct intel_iommu'. Consequently,
cache invalidations may only be applied to a single DMAR unit, and are
erroneously skipped for the other devices.

In preparation for fixing this, rework the structures so that the iommu
pointer resides in 'struct intel_svm_dev', allowing 'struct intel_svm'
to track them in its device list.

Fixes: 1c4f88b7f1f9 ("iommu/vt-d: Shared virtual address in scalable mode")
Cc: Lu Baolu <[email protected]>
Cc: Jacob Pan <[email protected]>
Cc: Raj Ashok <[email protected]>
Cc: David Woodhouse <[email protected]>
Reported-by: Guo Kaijie <[email protected]>
Reported-by: Xin Zeng <[email protected]>
Signed-off-by: Guo Kaijie <[email protected]>
Signed-off-by: Xin Zeng <[email protected]>
Signed-off-by: Liu Yi L <[email protected]>
Tested-by: Guo Kaijie <[email protected]>
Cc: [email protected] # v5.0+
Acked-by: Lu Baolu <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>

0 files changed, 0 insertions, 0 deletions