topic Re: Source code for kernel level multi-core initialization in Intel® Moderncode for Parallel Architectures

Source code for kernel level multi-core initialization

Frank_Miller — Wed, 01 Oct 2008 23:09:56 GMT

I tried this about six months ago but thought I would ask again. I have a small multi-threaded kernel written for ia32. I'd like to extend it to use multi-core support. I have read through the data books and white papers on smp and ipi so I have an idea what needs to be done. I've also spent some time looking through the Linux and FreeBSD code to see what they do. What I'm wondering is whether Intel provides source code examples (C or assembly) that will initialize a multi-core capable CPU to begin executing in multi-core mode.

Thanks,

Re: Source code for kernel level multi-core initialization

Adam — Fri, 24 Oct 2008 06:02:26 GMT

Quoting - Frank Miller

What sort of kernel is it? If it is a microkernel, see if you can find source code for one of the L4 kernels (such as L4Ka::Pistachio) and see how it works. Are you comfortable with providing details about your kernel (not all the kernel source code is needed, just details with necessary code)

NOTE: I have been through L4Ka::Pistachio, but only the one for IA-64, I'm not sure if what you're looking for is with the IA-32 port

Try this: http://l4ka.org/projects/pistachio/

Re: Source code for kernel level multi-core initialization

Adam — Sat, 25 Oct 2008 08:13:36 GMT

Having said what I said before, I am NOT basing my OS on L4Ka::Pistachio for various reasons

Re: Source code for kernel level multi-core initialization

TimP — Sat, 25 Oct 2008 13:31:13 GMT

Quoting - Adam Kachwalla

Does that mean you take the term "kernel" in a similar sense to Pistachio (whatever sense that may be)? You seem to be so intentionally vague in your terminology that no one could answer you. A kernel might be part of the linux OS, e a core computational resource for an application, or a component of a benchmark.

Re: Source code for kernel level multi-core initialization

Adam — Sun, 26 Oct 2008 05:53:11 GMT

Quoting - tim18

Quoting - Adam Kachwalla

Does that mean you take the term "kernel" in a similar sense to Pistachio (whatever sense that may be)? You seem to be so intentionally vague in your terminology that no one could answer you. A kernel might be part of the linux OS, e a core computational resource for an application, or a component of a benchmark.

No. The kernel I am refering to is known as L4Ka::Pistachio. I am not saying that the kernel is a pistachio. Google L4Ka::Pistachio and this should pop up a few results