Public bug reported: [Impact] If trying to boot a system with PMEM:
"Unknown memory type 14, considering reserved" The system will then not have access to EFIPresistentMemory ranges, because grub could not hand them over to the kernel to use. The resulting system would be missing a /dev/pmemN device. Grub requires 4 cherry-picked commits: - debian/patches/git_pmem_really_mark_mem_reserved_3d2c8048.patch - debian/patches/git_pmem_translate_persistent_type_76ce1de7.patch - debian/patches/git_pmem_mmap_handle_pmem_c79c59f1.patch - debian/patches/git_pmem_efiemu_handle_pmem_ae3b83a4.patch [Test case] - Boot PMEM-enabled system with updated grub [Regression Potential] This changes handling of memory ranges in grub, and may lead to incorrectly passing memory to the kernel, or otherwise allowing allocation of memory within reserved ranges. This would typically lead to a failure to boot the kernel, or missing memory-based devices (such a missing /dev/pmem0). ** Affects: grub2 (Ubuntu) Importance: Undecided Status: Fix Released ** Affects: grub2 (Ubuntu Xenial) Importance: Critical Assignee: Mathieu Trudel-Lapierre (cyphermox) Status: In Progress ** Affects: grub2 (Ubuntu Zesty) Importance: High Assignee: Mathieu Trudel-Lapierre (cyphermox) Status: Triaged ** Affects: grub2 (Ubuntu Artful) Importance: Undecided Status: Fix Released ** Also affects: grub2 (Ubuntu Artful) Importance: Undecided Status: New ** Also affects: grub2 (Ubuntu Zesty) Importance: Undecided Status: New ** Also affects: grub2 (Ubuntu Xenial) Importance: Undecided Status: New ** Changed in: grub2 (Ubuntu Artful) Status: New => Fix Released ** Changed in: grub2 (Ubuntu Xenial) Assignee: (unassigned) => Mathieu Trudel-Lapierre (cyphermox) ** Changed in: grub2 (Ubuntu Xenial) Importance: Undecided => Critical ** Changed in: grub2 (Ubuntu Xenial) Status: New => Triaged ** Changed in: grub2 (Ubuntu Zesty) Status: New => Triaged ** Changed in: grub2 (Ubuntu Zesty) Importance: Undecided => High ** Changed in: grub2 (Ubuntu Zesty) Assignee: (unassigned) => Mathieu Trudel-Lapierre (cyphermox) ** Changed in: grub2 (Ubuntu Xenial) Status: Triaged => In Progress -- You received this bug notification because you are a member of नेपाली भाषा समायोजकहरुको समूह, which is subscribed to Xenial. Matching subscriptions: Ubuntu 16.04 Bugs https://bugs.launchpad.net/bugs/1716424 Title: correctly parse PMEM memory ranges to pass it to the kernel Status in grub2 package in Ubuntu: Fix Released Status in grub2 source package in Xenial: In Progress Status in grub2 source package in Zesty: Triaged Status in grub2 source package in Artful: Fix Released Bug description: [Impact] If trying to boot a system with PMEM: "Unknown memory type 14, considering reserved" The system will then not have access to EFIPresistentMemory ranges, because grub could not hand them over to the kernel to use. The resulting system would be missing a /dev/pmemN device. Grub requires 4 cherry-picked commits: - debian/patches/git_pmem_really_mark_mem_reserved_3d2c8048.patch - debian/patches/git_pmem_translate_persistent_type_76ce1de7.patch - debian/patches/git_pmem_mmap_handle_pmem_c79c59f1.patch - debian/patches/git_pmem_efiemu_handle_pmem_ae3b83a4.patch [Test case] - Boot PMEM-enabled system with updated grub [Regression Potential] This changes handling of memory ranges in grub, and may lead to incorrectly passing memory to the kernel, or otherwise allowing allocation of memory within reserved ranges. This would typically lead to a failure to boot the kernel, or missing memory-based devices (such a missing /dev/pmem0). To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1716424/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~group.of.nepali.translators Post to : group.of.nepali.translators@lists.launchpad.net Unsubscribe : https://launchpad.net/~group.of.nepali.translators More help : https://help.launchpad.net/ListHelp