This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1782212
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1782212
Title:
KVM CLX ACPI HMAT table support
Status in linux package in Ubuntu:
Incomplete
Bug description:
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
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