linux-kernel - Re: [UPDATE] [PATCH v3 1/5] ACPI / processor : add support for ACPI0010 processor container

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Message-ID: <2770602.Nt428br2IX@vostro.rjw.lan>
Date:	Wed, 24 Feb 2016 00:41:50 +0100
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	Sudeep Holla <sudeep.holla@....com>
Cc:	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-ia64@...r.kernel.org, x86@...nel.org,
	Al Stone <al.stone@...aro.org>,
	Lorenzo Pieralisi <Lorenzo.Pieralisi@....com>,
	Mahesh Sivasubramanian <msivasub@...eaurora.org>,
	Ashwin Chaugule <ashwin.chaugule@...aro.org>,
	Prashanth Prakash <pprakash@...eaurora.org>
Subject: Re: [UPDATE] [PATCH v3 1/5] ACPI / processor : add support for ACPI0010 processor container

On Wednesday, February 17, 2016 11:54:19 AM Sudeep Holla wrote:
> ACPI 6.0 adds support for optional processor container device which may
> contain child objects that are either processor devices or other processor
> containers. This allows representing hierarchical processor topologies.
> 
> It is declared using the _HID of ACPI0010. It is an abstract container
> used to represent CPU topology and should not be used to hotplug
> purposes.
> 
> If no matching handler is found for a device in acpi_scan_attach_handler,
> acpi_bus_attach does a default enumeration for those devices with valid
> HID in the acpi namespace. This patch adds a scan handler for these ACPI
> processor containers to avoid default that enumeration and ensures the
> platform devices are not created for them.
> 
> Cc: "Rafael J. Wysocki" <rjw@...ysocki.net>
> Signed-off-by: Sudeep Holla <sudeep.holla@....com>

Queued up for 4.6, thanks!

Rafael