ACK: [PATCH 0/2][m/n:linux-aws] aws: aws: KVM and guest support for the PSCI SYSTEM_OFF2 (hibernate) call

[Tim Gardner]

On 4/19/24 11:18 AM, Philip Cox wrote:
> BugLink: https://bugs.launchpad.net/bugs/2061006
> 
> 
> SRU Justification:
> 
> [Impact]
> PSCI v1.3 adds support for SYSTEM_OFF2 which is analogous to ACPI S4 state.
> 
> This will allow hosting environments to determine that a guest is hibernated rather than just powered off, and ensure that they preserve the virtual environment appropriately to allow the guest to resume safely (or bump the hardware_signature in the FACS to trigger a clean reboot instead).
> 
> [Fix]
> This adds support for it to KVM, and to the guest hibernate code.
> 
> https://lore.kernel.org/lkml/20240312135958.727765-1-dwmw2@infradead.org
> 
> [Test Plan]
> AWS tested.
> 
> [Where problems could occur]
> If the final spec of the PSCI v1.3 changes, there may be changes required to this patch series.
> 
> [Other Info]
> 
> SF# 00383181
> 
> --
> 
> 
> 
> David Woodhouse (2):
>    UBUNTU: SAUCE: ACPICA: Detect FACS even for hardware reduced platforms
>    UBUNTU: SAUCE: arm64: acpi: Honour firmware_signature field of FACS,
>      if it exists
> 
>   arch/arm64/kernel/acpi.c      | 10 ++++++++++
>   drivers/acpi/acpica/tbfadt.c  | 30 +++++++++++++-----------------
>   drivers/acpi/acpica/tbutils.c |  7 +------
>   3 files changed, 24 insertions(+), 23 deletions(-)
> 
Acked-by: Tim Gardner <tim.gardner at canonical.com>
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Tim Gardner
Canonical, Inc