From mboxrd@z Thu Jan  1 00:00:00 1970
From: Julien Grall <julien.grall@citrix.com>
Subject: Re: [PATCH v2 37/41] arm : acpi add acpi parameter to
 enable/disable acpi
Date: Mon, 8 Jun 2015 17:35:08 +0100
Message-ID: <5575C43C.8090300@citrix.com>
References: <1431893048-5214-1-git-send-email-parth.dixit@linaro.org>
	<1431893048-5214-38-git-send-email-parth.dixit@linaro.org>
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To: Parth Dixit <parth.dixit@linaro.org>, xen-devel@lists.xen.org
Cc: keir@xen.org, ian.campbell@citrix.com, andrew.cooper3@citrix.com, tim@xen.org, julien.grall@citrix.com, stefano.stabellini@citrix.com, jbeulich@suse.com, christoffer.dall@linaro.org
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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