Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763501AbYBBCzm (ORCPT ); Fri, 1 Feb 2008 21:55:42 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1761088AbYBBCzM (ORCPT ); Fri, 1 Feb 2008 21:55:12 -0500 Received: from ti-out-0910.google.com ([209.85.142.184]:11636 "EHLO ti-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760084AbYBBCzK (ORCPT ); Fri, 1 Feb 2008 21:55:10 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=jXgVliYh3Hgy/XB9l/8uyRIY8qrAY674JTUM4ClI/4RqJ41+HpVqHWWyb/lq20O3pzK0g8bjSWNkwJSNy1Kf/dCo3QEH54pGKwbYQnPLoK976RBvDUxG1MmhpgsWtS8q1rRXnfeEz7gnaF+JgYq10pGcIRAmBTHjuCtm+Eo/m6k= Message-ID: Date: Sat, 2 Feb 2008 10:55:06 +0800 From: "Jike Song" To: "Andi Kleen" Subject: Re: What's the status of x2APIC support in Linux kernel? Cc: "Rijndael Cosque" , linux-kernel@vger.kernel.org In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <26e10850802010043m7375a110t6428d637ed1872bc@mail.gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1266 Lines: 34 On 2/1/08, Andi Kleen wrote: > There are right no CPUs shipping which implement x2apic. Thanks for your information. > "Jike Song" writes: > > Maybe. I have a question as well, what about the status of I/O > > xAPIC support in linux? If it is not supported yet, is there any > > effort to add it? I'm interested in that, hopefully can take part in > > the development. > > xAPIC has been supported forever. Thank you for your attention, Andi. Oh, what do I mean is "I/O xAPIC", but not the "local xAPIC" or xAPIC interrupt architecture introduced by Intel Pentium4 CPU. It seems that the "I/O xAPIC" hasn't been well documented yet, but some other document do have some description about it. Some Intel guys gave me an URL for the document: http://download.intel.com/technology/computing/vptech/Intel(r)_VT_for_Direct_IO.pdf Section 5 and section 9.5 describe 'I/OxAPIC'. I'm not sure if it is already supported by Linux, I guess it is not. -- Best Regards, Jike -- 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/