Re: What's the status of x2APIC support in Linux kernel?

Siddha, Suresh B
2008-02-01T18:08:58Z

On Fri, Feb 01, 2008 at 01:17:14PM +0100, Andi Kleen wrote:
> "Jike Song" <albcamus@gmail.com> writes:
>
> > On 2/1/08, Rijndael Cosque <rijcos@gmail.com> wrote:
> >> Hi all,
> >>
> >> I found the x2APIC spec via http://www.intel.com/products/processor/manuals/.
> >>
> >> Looks at present there is no x2APIC support in Linux kernel 2.6.24?
> >>
> >> Is there any experimental patch available for Linux kernel? -- I
> >> googled "x2APIC Linux"; looks no patch for now?
>
> There are right no CPUs shipping which implement x2apic.

That's correct. None of the released CPU's support it.

I am working on a patch enabling these future x2apic extensions and the plan
is to post this kernel patch shortly.

thanks,
suresh