linux-kernel - Re: [V4 PATCH 2/6] arm64 : Introduce support for ACPI

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Message-ID: <555C7546.4040601@amd.com>
Date:	Wed, 20 May 2015 06:51:34 -0500
From:	Suravee Suthikulanit <suravee.suthikulpanit@....com>
To:	Catalin Marinas <catalin.marinas@....com>
CC:	<rjw@...ysocki.net>, <lenb@...nel.org>, <will.deacon@....com>,
	<bhelgaas@...gle.com>, <thomas.lendacky@....com>,
	<herbert@...dor.apana.org.au>, <davem@...emloft.net>,
	<arnd@...db.de>, <al.stone@...aro.org>,
	<linaro-acpi@...ts.linaro.org>, <netdev@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-acpi@...r.kernel.org>,
	<leo.duran@....com>, <hanjun.guo@...aro.org>, <msalter@...hat.com>,
	<grant.likely@...aro.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-crypto@...r.kernel.org>
Subject: Re: [V4 PATCH 2/6] arm64 : Introduce support for ACPI _CCA object

On 5/20/2015 5:03 AM, Catalin Marinas wrote:
> On Fri, May 15, 2015 at 04:23:10PM -0500, Suravee Suthikulpanit wrote:
>>  From http://www.uefi.org/sites/default/files/resources/ACPI_6.0.pdf,
>> section 6.2.17 _CCA states that ARM platforms require ACPI _CCA
>> object to be specified for DMA-cabpable devices. This patch introduces
>> ACPI_MUST_HAVE_CCA in arm64 Kconfig to specify such requirement.
>>
>> In case _CCA is missing, arm64 would assign dummy_dma_ops
>> to disable DMA capability of the device.
>>
>> Signed-off-by: Mark Salter <msalter@...hat.com>
>> Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@....com>
>> CC: Catalin Marinas <catalin.marinas@....com>
>> CC: Will Deacon <will.deacon@....com>
>> CC: Arnd Bergmann <arnd@...db.de>
>
> Acked-by: Catalin Marinas <catalin.marinas@....com>
>

Thanks,

Suravee

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