You have been subscribed to a public bug: ACPI HMAT table support : HMAT is a new ACPI table that records the performance parameter of memory, so MCDRAM (or next gen HBM2) can be described well by this table. We need to support this table in kernel and qemu so that guest can get and parse this table then to find where the high-performance memory is.
Heterogeneous Memory Attribute Table (HMAT) describes the memory attributes, such as memory side cache attributes and bandwidth and latency details, related to the System Physical Address (SPA) Memory Ranges. The software is expected to use this information as hint for optimization. HMAT is defined in ACPI 6.2: 5.2.27 Heterogeneous Memory Attribute Table (HMAT). http://www.uefi.org/sites/default/files/resources/ACPI_6_2.pdf patches: http://lists.nongnu.org/archive/html/qemu-devel/2018-06/msg05368.html ** Affects: linux (Ubuntu) Importance: Wishlist Status: Triaged ** Tags: intel intel-virt-19.04 -- KVM CLX ACPI HMAT table support https://bugs.launchpad.net/bugs/1782212 You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. -- 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
