[PATCH v2 3/3] arm64: acpi: Enable ACPI CCEL support

[Gavin Shan]

On 9/9/25 8:35 AM, Suzuki K Poulose wrote:
> Add support for ACPI CCEL by handling the EfiACPIMemoryNVS type memory.
> As per UEFI specifications NVS memory is reserved for Firmware use even
> after exiting boot services. Thus map the region as read-only.
> 
> Cc: Sami Mujawar <sami.mujawar at arm.com>
> Cc: Will Deacon <will at kernel.org>
> Cc: Catalin Marinas <catalin.marinas at arm.com>
> Cc: Aneesh Kumar K.V <aneesh.kumar at kernel.org>
> Cc: Steven Price <steven.price at arm.com>
> Cc: Sudeep Holla <sudeep.holla at arm.com>
> Cc: Gavin Shan <gshan at redhat.com>
> Signed-off-by: Suzuki K Poulose <suzuki.poulose at arm.com>
> ---
> Changes since v1
>   - Map NVS region as read-only, update comment to clarify that the region
>     is reserved for firmware use.
> 
> ---
>   arch/arm64/kernel/acpi.c | 11 +++++++++++
>   1 file changed, 11 insertions(+)
> 

Reviewed-by: Gavin Shan <gshan at redhat.com>