Public bug reported: SRU Justification
[Impact] Can you please include one more patchset for the "no enough RAM under 4GB" issue for the v5.13 kernel (and v5.15 kernel): https://lwn.net/ml/linux-kernel/20220209122302.213882-2-ltyker...@gmail.com/ https://lwn.net/ml/linux-kernel/20220209122302.213882-3-ltyker...@gmail.com/ Without the two patches, currently the 5.13 kernel (and 5.15 kernel) can't boot as a CVM guest on Azure. :-( The background is: currently an Azure host only provides about 900 MB memory below the 4GB boundary while the swiotlb code (which is required by the CVM patchset) needs to allocate memory of a size of MIN(1GB, 6% of the total memory). There will be an Azure host update, with which the host will provide about 3GB memory below the 4GB boundary, but we still need to wait a few more weeks to know the ETA. Currently the above two patches can work around the issue from the guest side. [Test Case] Microsoft tested [Where things could go wrong] These patches could affect non-CVM instances. [Other Info] SF: #00323683 ** Affects: linux-azure (Ubuntu) Importance: Undecided Status: Fix Committed ** Affects: linux-azure (Ubuntu Impish) Importance: Medium Assignee: Tim Gardner (timg-tpi) Status: In Progress ** Affects: linux-azure (Ubuntu Jammy) Importance: Undecided Status: Fix Committed ** Also affects: linux-azure (Ubuntu Jammy) Importance: Undecided Status: New ** Also affects: linux-azure (Ubuntu Impish) Importance: Undecided Status: New ** Changed in: linux-azure (Ubuntu Jammy) Status: New => Fix Committed ** Changed in: linux-azure (Ubuntu Impish) Status: New => In Progress ** Changed in: linux-azure (Ubuntu Impish) Importance: Undecided => Medium ** Changed in: linux-azure (Ubuntu Impish) Assignee: (unassigned) => Tim Gardner (timg-tpi) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1967166 Title: Azure: not enough RAM under 4GB for CVM To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/1967166/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
