Ubuntu
linux package

  1. Cosmic (18.10)
  2. Bug #1823037
  3. Comment #0

Comment 0 for bug 1823037

Revision history for this message
Jeff Lane  (bladernr) wrote :

[Impact]
If a device has an exclusion range specified in the IVRS table, this region needs to be reserved in the iova-domain of that device. This hasn't happened until now and can cause data corruption on data transfered with these devices.

Treat exclusion ranges as reserved regions in the iommu-core to fix the problem.

This is a clean cherry pick from mainline of 8aafaaf2212192012f5bae305bb31cdf7681d777

[Test Case]

[Fixes]
Cherry pick the following from Mainline
fd3b3448cf5adc2a2f09b70eaad03c27fe79e7a6 iommu/amd: Reserve exclusion range in iova-domain

[Regression Risk]
Only affects the amd_iommu driver:
    drivers/iommu/amd_iommu*