From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rajesh Shah Subject: Re: ACPI hotplug Date: Thu, 13 Jan 2005 12:06:45 -0800 Message-ID: <20050113120644.A911@unix-os.sc.intel.com> References: Reply-To: Rajesh Shah Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: ; from i_p_a_u_l-/E1597aS9LQAvxtiuMwx3w@public.gmane.org on Thu, Jan 13, 2005 at 03:02:37PM +0100 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Paul Ionescu Cc: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-acpi@vger.kernel.org On Thu, Jan 13, 2005 at 03:02:37PM +0100, Paul Ionescu wrote: > > I just read that 2.6.11-rc1 does support ACPI hotplug. > What does this really mean ? > I found some new files in /sys/firmware: > find /sys/firmware/ | grep eject > /sys/firmware/acpi/namespace/ACPI/_SB/PCI0/USB7/URTH/UPDK/eject > /sys/firmware/acpi/namespace/ACPI/_SB/PCI0/USB0/URTH/UPDK/eject > /sys/firmware/acpi/namespace/ACPI/_SB/PCI0/IDE0/SCND/MSTR/eject > /sys/firmware/acpi/namespace/ACPI/_SB/PCI0/LPC/EC/BAT1/eject > /sys/firmware/acpi/namespace/ACPI/_SB/PCI0/LPC/FDC/FDD0/eject > The new ACPI code is to support _physical_ insertion/removal of cpus and "containers" (nodes) that have cpus and memory. This requires firmware/platform support. Linux already supports ACPI (as well as SHPC/PCI-Express) based physical insertion/removal of IO adapters independent of the new code in 2.6.11-rc1. The ACPI namespace you listed above shows ACPI ejectable IO devices. This is handled by the existing acpiphp code, not the new processor or container code. Rajesh ------------------------------------------------------- The SF.Net email is sponsored by: Beat the post-holiday blues Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt