An additional patch has been identified that will be needed to solve this issue.
https://github.com/torvalds/linux/commit/3c677d206210f53a4be972211066c0f1cd47fe12 #diff-083bf3d2f128b616e730b7f9f8fc65c4 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. 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* To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1823037/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
