tree 9e226486ee963fe35a7663c6e3ac144a0f261a3c
parent 301e7ee1dec513e5aca12d01c819a1f762918d0a
author Lu Baolu <baolu.lu@linux.intel.com> 1562649765 +0800
committer Joerg Roedel <jroedel@suse.de> 1563808584 +0200

iommu/vt-d: Avoid duplicated pci dma alias consideration

As we have abandoned the home-made lazy domain allocation
and delegated the DMA domain life cycle up to the default
domain mechanism defined in the generic iommu layer, we
needn't consider pci alias anymore when mapping/unmapping
the context entries. Without this fix, we see kernel NULL
pointer dereference during pci device hot-plug test.

Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Kevin Tian <kevin.tian@intel.com>
Fixes: fa954e6831789 ("iommu/vt-d: Delegate the dma domain to upper layer")
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reported-and-tested-by: Xu Pengfei <pengfei.xu@intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>