| Message ID | 20240419171853.81663-1-philip.cox@canonical.com |
|---|---|
| Headers | show |
| Series | aws: aws: KVM and guest support for the PSCI SYSTEM_OFF2 (hibernate) call | expand |
On Fri, Apr 19, 2024 at 01:18:51PM -0400, 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 Acked-by: Portia Stephens <portia.stephens@canonical.com>
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@canonical.com>
On 19/04/2024 19:18, 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(-) > This seems to be applied.
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(-)