linux-kernel - Re: [PATCH v7 12/17] ARM64: ACPI: Check if it runs on Xen to enable or disable ACPI

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Message-ID: <56FE4037.5060305@huawei.com>
Date:	Fri, 1 Apr 2016 17:32:39 +0800
From:	Shannon Zhao <zhaoshenglong@...wei.com>
To:	Mark Rutland <mark.rutland@....com>,
	Ard Biesheuvel <ard.biesheuvel@...aro.org>
CC:	Stefano Stabellini <stefano.stabellini@...citrix.com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Huangpeng (Peter)" <peter.huangpeng@...wei.com>,
	<julien.grall@....com>,
	"Stefano Stabellini" <stefano.stabellini@...rix.com>,
	Shannon Zhao <shannon.zhao@...aro.org>,
	"xen-devel@...ts.xen.org" <xen-devel@...ts.xen.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	David Vrabel <david.vrabel@...rix.com>
Subject: Re: [PATCH v7 12/17] ARM64: ACPI: Check if it runs on Xen to enable
 or disable ACPI



On 2016/4/1 17:25, Shannon Zhao wrote:
> If it really needs is_xen_node(), I will not factor
> fdt_find_hyper_node() in patch 11 since it uses flat DT while here it's
> going to use unflatten DT.
Sorry, I'm wrong. They both use flat DT. But it's no need to factor
fdt_find_hyper_node() since is_xen_node is very simple like below I think.

of_flat_dt_is_compatible(node, "xen,xen");

And maybe it cloud directly use above check in dt_scan_depth1_nodes.

Thanks,
-- 
Shannon