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Date: Sat, 2 Feb 2008 10:55:06 +0800 From: "Jike Song" <albcamus@...il.com> To: "Andi Kleen" <andi@...stfloor.org> Cc: "Rijndael Cosque" <rijcos@...il.com>, linux-kernel@...r.kernel.org Subject: Re: What's the status of x2APIC support in Linux kernel? On 2/1/08, Andi Kleen <andi@...stfloor.org> wrote: > There are right no CPUs shipping which implement x2apic. Thanks for your information. > "Jike Song" <albcamus@...il.com> 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@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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