Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1751569AbbDLK6L (ORCPT <rfc822;w@1wt.eu>);
	Sun, 12 Apr 2015 06:58:11 -0400
Received: from inca-roads.misterjones.org ([213.251.177.50]:34896 "EHLO
	inca-roads.misterjones.org" rhost-flags-OK-OK-OK-OK)
	by vger.kernel.org with ESMTP id S1751509AbbDLK6H (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Sun, 12 Apr 2015 06:58:07 -0400
To: Brent Wang <wangbintian@gmail.com>
Subject: Re: [PATCH 3/3] arm64: dts: Add dts files for Hisilicon Hi6220 SoC
X-PHP-Originating-Script: 0:main.inc
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8;
 format=flowed
Content-Transfer-Encoding: 7bit
Date: Sun, 12 Apr 2015 11:57:35 +0100
From: Marc Zyngier <marc.zyngier@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>, <dan.zhao@hisilicon.com>,
        <btw@mail.itp.ac.cn>, Catalin Marinas <catalin.marinas@arm.com>,
        <wangbinghui@hisilicon.com>, Will Deacon <will.deacon@arm.com>,
        <huxinwei@huawei.com>, <khilman@linaro.org>,
        <haojian.zhuang@linaro.org>, <yanhaifeng@gmail.com>,
        <rob.herring@linaro.org>, <mturquette@linaro.org>,
        <victor.lixin@hisilicon.com>, <xuwei5@hisilicon.com>,
        <jh80.chung@samsung.com>, <sledge.yanwei@huawei.com>,
        <kong.kongxinwei@hisilicon.com>, <heyunlei@huawei.com>,
        <w.f@huawei.com>, <zhangfei.gao@linaro.org>,
        <z.liuxinliang@huawei.com>, <devicetree@vger.kernel.org>,
        Bintian Wang <bintian.wang@huawei.com>,
        Pawel Moll <pawel.moll@arm.com>, <ijc+devicetree@hellion.org.uk>,
        <puck.chen@hisilicon.com>, <olof@lixom.net>, <robh+dt@kernel.org>,
        <linux@arm.linux.org.uk>, <zhenwei.wang@hisilicon.com>,
        <linux-arm-kernel@lists.infradead.org>, <guodong.xu@linaro.org>,
        <tomeu.vizoso@collabora.com>, <sboyd@codeaurora.org>,
        <linux-kernel@vger.kernel.org>, <galak@codeaurora.org>,
        <xuejiancheng@huawei.com>, <xuyiping@hisilicon.com>,
        <liguozhu@hisilicon.com>
Organization: ARM Ltd
In-Reply-To: <CAAS=xmgySDmwNpx5xpHd15M-1eJLvPBhudhGu+cRqw3g_X_SZA@mail.gmail.com>
References: <1423128277-10297-1-git-send-email-bintian.wang@huawei.com>
 <1423128277-10297-4-git-send-email-bintian.wang@huawei.com>
 <20150205193017.GF20735@leverpostej>
 <CAAS=xmgsuY=c8-n_pDiZjLe2u+SPX7msRje7h0sNkRtT3HLfQA@mail.gmail.com>
 <CAAS=xmgySDmwNpx5xpHd15M-1eJLvPBhudhGu+cRqw3g_X_SZA@mail.gmail.com>
Message-ID: <7a9107efdfe64b0d9e9d93421595badb@www.loen.fr>
User-Agent: Roundcube Webmail/0.7.2
X-SA-Exim-Connect-IP: <locally generated>
X-SA-Exim-Rcpt-To: wangbintian@gmail.com, mark.rutland@arm.com, dan.zhao@hisilicon.com, btw@mail.itp.ac.cn, catalin.marinas@arm.com, wangbinghui@hisilicon.com, will.deacon@arm.com, huxinwei@huawei.com, khilman@linaro.org, haojian.zhuang@linaro.org, yanhaifeng@gmail.com, rob.herring@linaro.org, mturquette@linaro.org, victor.lixin@hisilicon.com, xuwei5@hisilicon.com, jh80.chung@samsung.com, sledge.yanwei@huawei.com, kong.kongxinwei@hisilicon.com, heyunlei@huawei.com, w.f@huawei.com, zhangfei.gao@linaro.org, z.liuxinliang@huawei.com, devicetree@vger.kernel.org, bintian.wang@huawei.com, pawel.moll@arm.com, ijc+devicetree@hellion.org.uk, puck.chen@hisilicon.com, olof@lixom.net, robh+dt@kernel.org, linux@arm.linux.org.uk, zhenwei.wang@hisilicon.com, linux-arm-kernel@lists.infradead.org, guodong.xu@linaro.org, tomeu.vizoso@collabora.com, sboyd@codeaurora.org, linux-kernel@vger.kernel.org, galak@codeaurora.org, xuejiancheng@huawei.com, xuyiping@hisilicon.com, liguozhu@hisilicon.com
X-SA-Exim-Mail-From: marc.zyngier@arm.com
X-SA-Exim-Scanned: No (on cheepnis.misterjones.org); SAEximRunCond expanded to false
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 1388
Lines: 42

On 2015-04-12 07:40, Brent Wang wrote:
> Hello Mark,
>
> 2015-02-06 16:42 GMT+08:00 Brent Wang <wangbintian@gmail.com>:
> [...]
>>>
>>>> +     gic: interrupt-controller@f6800000 {
>>>> +             compatible = "arm,gic-400", "arm,cortex-a15-gic";
>>>
>>> Surely there's no need for the "arm,cortex-a15-gic" fallback entry? 
>>> What
>>> am I missing?
>> Remove it in next version.
> After remove "arm,cortex-a15-gic", I get the following error during
> kernel booting:
> -----
> kvm [1]: Using HYP init bounce page @396d9000
> kvm [1]: error: no compatible GIC node found
> kvm [1]: error initializing Hyp mode: -19
> -----
>
> Check code "virt/kvm/arm/vgic.c", gicv2 only "cortex-a15-gic" and
> gicv3 support kvm now,
> so I think we should keep it, how about your idea?

Please look at commit 0f37247574b3 that is queued for merge in 4.1.
It adds the required compatibility strings to KVM, so Mark is perfectly
right to ask you to drop this "cortex-a15-gic" from your DT.

This DT won't be merged before 4.1 anyway, so there is no point trying
to make it work with older kernels.

Thanks,

         M.
-- 
Fast, cheap, reliable. Pick two.
--
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/