From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jack Steiner Date: Thu, 30 Mar 2006 01:38:16 +0000 Subject: Re: [RFC][PATCH] avoid creating empty nodes [0/2] Message-Id: <20060330013816.GA25530@sgi.com> List-Id: References: <20060329110903.d7bae796.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <20060329110903.d7bae796.kamezawa.hiroyu@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org On Thu, Mar 30, 2006 at 08:31:02AM +0900, KAMEZAWA Hiroyuki wrote: > On Wed, 29 Mar 2006 08:37:34 -0600 > Jack Steiner wrote: > > ACPI3.0 will have a way to describe these IO nodes. We have not done the > > design but when ACPI3.0 is available, we intend to make the kernel fully > > aware of IO-only nodes. > > > > Then, we should set I/O nodes's pxm to pxm_online_map (I added in patch) in > acpi_numa_arch_fixup() in addition to cpus and memory. But there are no codes > to find available I/O nodes now. > Correct ? Correct for ACPI2.0. ACPI3.0 has the PXM for IO buses (at least I think it was at the bus level - I don't have the spec right now) in one of the IO tables. > > BTW I heared ACPI3.0 can define pxm > 256. If we support it, entire codes should > be rewrote ;(. Yes. IIRC, PXM is a 32-bits in some tables, 24-bits in other tables. > > -- Kame --- Jack