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Re: [Xen-devel] [PATCH v2 37/41] arm : acpi add acpi parameter to enable/disable acpi



Hi Parth,

On 17/05/2015 21:04, Parth Dixit wrote:
ACPI will be disabled by default. Define new
command line parameter "acpi" for enabling it.

I don't think this is right. We have to be able to boot platform where there is only ACPI provided without adding a command line option.

Overall, it would be better if we follow the same behavior as Linux i.e ACPI is enabled instead off DT unless:
        - ACPI has been disabled (acpi=off)
- the DT is not empty (it has more than just a /chosen node) and ACPI has not been forced enabled (acpi=force).

Regards,

--
Julien Grall

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