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

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Date: Fri, 12 Apr 2024 15:05:15 +0100
From: Will Deacon <will@...nel.org>
To: David Woodhouse <dwmw2@...radead.org>
Cc: Catalin Marinas <catalin.marinas@....com>,
	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: Re: [PATCH v2 0/2] Support clean reboot after hibernate on Arm64

On Mon, Mar 11, 2024 at 12:19:14PM +0000, David Woodhouse wrote:
> 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 +------

Rafael, how would you like the handle this series? The arm64 part has
been Acked-by Sudeep, so I'm happy with it.

Will