** Also affects: linux-aws (Ubuntu Noble)
Importance: Undecided
Assignee: Philip Cox (philcox)
Status: New
** Also affects: linux-aws (Ubuntu Mantic)
Importance: Undecided
Status: New
** Changed in: linux-aws (Ubuntu Mantic)
Assignee: (unassigned) => Philip Cox (philcox)
** Changed in: linux-aws (Ubuntu Mantic)
Status: New => In Progress
** Changed in: linux-aws (Ubuntu Noble)
Status: New => In Progress
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Packages, which is subscribed to linux-aws in Ubuntu.
https://bugs.launchpad.net/bugs/2060992
Title:
aws: Guest kernel support for clean boot on demand
Status in linux-aws package in Ubuntu:
In Progress
Status in linux-aws source package in Mantic:
In Progress
Status in linux-aws source package in Noble:
In Progress
Bug description:
SRU Justification:
[Impact]
The FACS field in the ACPI table is optional, but can be used communicate the
hardware_signature field. If this field changes on resuming from a hibernation
a clean reboot should happen rather than the resume from hibernation.
On hardware reduced platforms[0] this field may exist but it is not
exposed currently.
[Fix]
Expose this field even on hardware reduced platforms.
https://lore.kernel.org/lkml/20240312134148.727454-1-dw...@infradead.org
[Test Plan]
AWS test.
[Where problems could occur]
If on hardware reduced platforms that incorrectly support/advertise the FACS
field, hibernation may break if it returns a hardware signature that changes.
[Other info]
SF# 00383181
[0]: See Section 4.1 of the ACPI spec for info on hardware-reduced platforms.
https://uefi.org/htmlspecs/ACPI_Spec_6_4_html/04_ACPI_Hardware_Specification/ACPI_Hardware_Specification.html
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