linux-kernel - Re: FAILED: Patch "ACPI: CPPC: Use access_width over bit_width for system memory accesses" failed to apply to 5.15-stable tree

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Date: Wed, 27 Mar 2024 08:48:17 -0700
From: Easwar Hariharan <eahariha@...ux.microsoft.com>
To: Sasha Levin <sashal@...nel.org>, stable@...r.kernel.org,
 jarredwhite@...ux.microsoft.com
Cc: "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
 linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: FAILED: Patch "ACPI: CPPC: Use access_width over bit_width for
 system memory accesses" failed to apply to 5.15-stable tree

Hi Sasha,

On 3/27/2024 5:17 AM, Sasha Levin wrote:
> The patch below does not apply to the 5.15-stable tree.
> If someone wants it applied there, or to any other stable or longterm
> tree, then please email the backport, including the original git commit
> id to <stable@...r.kernel.org>.
> 
> Thanks,
> Sasha
> 
> ------------------ original commit in Linus's tree ------------------
> 
>>>From 2f4a4d63a193be6fd530d180bb13c3592052904c Mon Sep 17 00:00:00 2001
> From: Jarred White <jarredwhite@...ux.microsoft.com>
> Date: Fri, 1 Mar 2024 11:25:59 -0800
> Subject: [PATCH] ACPI: CPPC: Use access_width over bit_width for system memory
>  accesses
> 
> To align with ACPI 6.3+, since bit_width can be any 8-bit value, it
> cannot be depended on to be always on a clean 8b boundary. This was
> uncovered on the Cobalt 100 platform.
> 

Please see the backport for this patch I sent earlier: https://lore.kernel.org/stable/6df99ad6-0402-4dcf-9a1c-7259436768dd@linux.microsoft.com/T/#u

Thanks,
Easwar