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    SubjectRe: [PATCH V3: Add Smp support for Allwinner A20. 1/3] Add smp support for Allwinner A20(sunxi 7i).
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    Hi  Maxime,
    I have test it, but I found it does not work. If using
    smp_prepare_cpus, the kernenl cannot find the secondary cpus because
    that smp_prepare_cpus semms not be excuted before kernel is booting
    secondary cpus. So I have to use early_initcall.

    Fan.

    On 26 September 2013 02:44, Maxime Ripard
    <maxime.ripard@free-electrons.com> wrote:
    > Hi Fan,
    >
    > On Wed, Sep 25, 2013 at 12:22:44AM +0800, cinifr wrote:
    >> > You still haven't said why you don't want to use smp_init_cpus there.
    >> I find that of_funcation liking of_find_matching_node and of_iomap can
    >> not run well in smp_init_cpus. It cause kernel crash. So I have to use
    >> early_initcall.
    >
    > Ah, right.
    >
    > Then, can't we use smp_prepare_cpus for this? it looks to be late enough
    > so that we can use ioremap there.
    >
    > I don't want it to be an initcall. The code will be different on the
    > A31, and we don't want it to be run on all the other machines whenever
    > we boot a multiplatform kernel anyway.
    >
    > Maxime
    >
    > --
    > Maxime Ripard, Free Electrons
    > Embedded Linux, Kernel and Android engineering
    > http://free-electrons.com


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