** Tags added: verification-done-bionic verification-done-disco
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https://bugs.launchpad.net/bugs/1823037
Title:
amd_iommu possible data corruption
Status in linux package in Ubuntu:
In Progress
Status in linux source package in Bionic:
In Progress
Status in linux source package in Cosmic:
In Progress
Status in linux source package in Disco:
In Progress
Bug description:
[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*
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