** Description changed: SRU Justification [Impact] * 20.04 Azure CVM (with 5.15 kernel) instances are failing to boot with high reproducibility [Fix] * Clean reverts of the following commits: * 8bd834015a5e: "UBUNTU: SAUCE: swiotlb: Split up single swiotlb lock" * 3db34e258474: "UBUNTU: SAUCE: swiotlb: allocate memory in a cache-friendly way" * 9e1b646a9cac: "UBUNTU: SAUCE: swiotlb: use bitmap to track free slots" + + * Backport "cbf53074a528: swiotlb: Honour dma_alloc_coherent() alignment + in swiotlb_alloc() from upstream" [Test Plan] * Compile tested * Boot tested * Tested with Azure images, booted successfully 25 consecutive times [Regression potential] * Changes isolated, minimal regression risk. Changes were SAUCE patches, so reverting back to upstream functionality. * Likely small I/O performance hit under heavy I/O, but alleviates system hangs [Other info] * SF#00405149
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-azure in Ubuntu. https://bugs.launchpad.net/bugs/2096813 Title: Ubuntu 20.04 confidential VM deployments are failing Status in linux-azure package in Ubuntu: New Status in linux-azure source package in Jammy: Fix Committed Bug description: SRU Justification [Impact] * 20.04 Azure CVM (with 5.15 kernel) instances are failing to boot with high reproducibility [Fix] * Clean reverts of the following commits: * 8bd834015a5e: "UBUNTU: SAUCE: swiotlb: Split up single swiotlb lock" * 3db34e258474: "UBUNTU: SAUCE: swiotlb: allocate memory in a cache-friendly way" * 9e1b646a9cac: "UBUNTU: SAUCE: swiotlb: use bitmap to track free slots" * Backport "cbf53074a528: swiotlb: Honour dma_alloc_coherent() alignment in swiotlb_alloc() from upstream" [Test Plan] * Compile tested * Boot tested * Tested with Azure images, booted successfully 25 consecutive times [Regression potential] * Changes isolated, minimal regression risk. Changes were SAUCE patches, so reverting back to upstream functionality. * Likely small I/O performance hit under heavy I/O, but alleviates system hangs [Other info] * SF#00405149 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/2096813/+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
