linux-kernel - [PATCH v2 0/2] Support clean reboot after hibernate on Arm64

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Message-Id: <20240412073530.2222496-1-dwmw2@infradead.org>
Date: Mon, 11 Mar 2024 12:19:14 +0000
From: David Woodhouse <dwmw2@...radead.org>
To: Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>
Cc: Robert Moore <robert.moore@...el.com>, "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>, Len Brown <lenb@...nel.org>, Sudeep Holla <sudeep.holla@....com>, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org, acpica-devel@...ts.linux.dev
Subject: [PATCH v2 0/2] Support clean reboot after hibernate on Arm64

When the hardware signature in the ACPI FACS changes, the OS is supposed
to perform a clean reboot instead of attempting to resume on a changed
platform.

Although these patches have a functional dependency, they could be merged
separately. The second patch just won't *see* a FACS table if the ACPICA
fix isn't present.

v2: Now that the ACPICA patch is merged upstream, note its commit ID

David Woodhouse (2):
      ACPICA: Detect FACS even for hardware reduced platforms
      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(-)