Re: [x86] fs, gs purpose & multicore prog

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From: Jeremy Fitzhardinge

Subject: Re: [x86] fs, gs purpose & multicore prog

Date: Friday, September 5, 2008 - 10:38 pm

Eric Lacombe wrote:
quoted text> I know these things ;) but what I wanted to know is the "x86 architectural 
> details". In fact, I saw that during the machine init the BIOS select a cpu on 
> the bus to be the BSP (bootstrap proc). The others are then the APs (Appli 
> proc). Then the kernel runs on the BSP. What I wonder is how the kernel gives 
> execution flow to the APs.
>   

See arch/x86/kernel/smpboot.c (esp do_boot_cpu()), and chapter 7 of
"Intel® 64 and IA-32 Architectures Software Developer’s Manual", volume 3a.

    J
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Messages in current thread:

[x86] fs, gs purpose & multicore prog, Eric Lacombe, (Wed Sep 3, 2:09 am)

Re: [x86] fs, gs purpose & multicore prog, Jeremy Fitzhardinge, (Thu Sep 4, 9:49 am)

Re: [x86] fs, gs purpose & multicore prog, Eric Lacombe, (Fri Sep 5, 4:17 am)

Re: [x86] fs, gs purpose & multicore prog, Jeremy Fitzhardinge, (Fri Sep 5, 7:51 am)

Re: [x86] fs, gs purpose & multicore prog, Eric Lacombe, (Fri Sep 5, 4:09 pm)

Re: [x86] fs, gs purpose & multicore prog, Jeremy Fitzhardinge, (Fri Sep 5, 10:38 pm)


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