Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753297AbbETLwH (ORCPT ); Wed, 20 May 2015 07:52:07 -0400 Received: from mail-by2on0129.outbound.protection.outlook.com ([207.46.100.129]:37152 "EHLO na01-by2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751996AbbETLwC (ORCPT ); Wed, 20 May 2015 07:52:02 -0400 Authentication-Results: spf=none (sender IP is 165.204.84.221) smtp.mailfrom=amd.com; arm.com; dkim=none (message not signed) header.d=none; X-WSS-ID: 0NONCYK-07-KOL-02 X-M-MSG: Message-ID: <555C7546.4040601@amd.com> Date: Wed, 20 May 2015 06:51:34 -0500 From: Suravee Suthikulanit User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 MIME-Version: 1.0 To: Catalin Marinas CC: , , , , , , , , , , , , , , , , , , Subject: Re: [V4 PATCH 2/6] arm64 : Introduce support for ACPI _CCA object References: <1431724994-21601-1-git-send-email-Suravee.Suthikulpanit@amd.com> <1431724994-21601-3-git-send-email-Suravee.Suthikulpanit@amd.com> <20150520100304.GE25313@e104818-lin.cambridge.arm.com> In-Reply-To: <20150520100304.GE25313@e104818-lin.cambridge.arm.com> Content-Type: text/plain; charset="windows-1252"; format=flowed Content-Transfer-Encoding: 7bit X-EOPAttributedMessage: 0 X-Microsoft-Exchange-Diagnostics: 1;BN1BFFO11FD050;1:hFtf5cdPSeQrra1G5jtZlKfqZlNt5tCgQwYDoE/m2XK7Np6nKwKDXOBe4qybvWQ1Ys04pkOT1w0LkW8Ea7WRBd/WeIm/symY09DsS6uoSKNpxlTxTBqSSqAN53cT4leVl1g/iKp+Tw6twd9va2nw6lb/kIvvw9eyivhG0oWgz20sDWzIQCIlYpyjb2n12k0kPG3Wi0d2KEuOqXDaYEt/TvHJKq2U6ziQbBfU25/tNAY8AICfNHILsdqDAWt1hge9Im+uA4rBsz/2zih6rPmG6A== X-Forefront-Antispam-Report: CIP:165.204.84.221;CTRY:US;IPV:NLI;EFV:NLI;SFV:NSPM;SFS:(10019020)(6009001)(428002)(164054003)(51704005)(189002)(479174004)(199003)(24454002)(377454003)(19580395003)(110136002)(80316001)(19580405001)(86362001)(77156002)(189998001)(105586002)(5001860100001)(83506001)(5001830100001)(87936001)(46102003)(62966003)(120886001)(59896002)(23746002)(2950100001)(101416001)(33656002)(106466001)(64126003)(65956001)(36756003)(87266999)(54356999)(65806001)(65816999)(76176999)(97736004)(4001540100001)(50466002)(64706001)(15975445007)(4001350100001)(50986999)(68736005)(77096005)(92566002)(47776003)(5510600003);DIR:OUT;SFP:1102;SCL:1;SRVR:CO1PR02MB253;H:atltwp01.amd.com;FPR:;SPF:None;PTR:InfoDomainNonexistent;MX:1;A:1;LANG:en; X-Microsoft-Antispam: UriScan:;BCL:0;PCL:0;RULEID:;SRVR:CO1PR02MB253; X-Microsoft-Antispam-PRVS: X-Exchange-Antispam-Report-Test: UriScan:; X-Exchange-Antispam-Report-CFA-Test: BCL:0;PCL:0;RULEID:(601004)(5005006)(3002001);SRVR:CO1PR02MB253;BCL:0;PCL:0;RULEID:;SRVR:CO1PR02MB253; X-Forefront-PRVS: 0582641F53 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 May 2015 11:51:57.9420 (UTC) X-MS-Exchange-CrossTenant-Id: fde4dada-be84-483f-92cc-e026cbee8e96 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=fde4dada-be84-483f-92cc-e026cbee8e96;Ip=[165.204.84.221];Helo=[atltwp01.amd.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CO1PR02MB253 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1083 Lines: 28 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 >> Signed-off-by: Suravee Suthikulpanit >> CC: Catalin Marinas >> CC: Will Deacon >> CC: Arnd Bergmann > > Acked-by: Catalin Marinas > Thanks, Suravee -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/