PS3 platform is broken on Linux 3.7.0
Michael Ellerman
michael at ellerman.id.au
Mon Feb 11 14:39:08 EST 2013
On Sun, Feb 10, 2013 at 09:51:37PM +0400, Phileas Fogg wrote:
>
> >Phileas Fogg < phileas-fogg at mail.ru > writes:
> >
>
> Patch:
>
> --- arch/powerpc/kernel/setup_64.c.old 2013-02-10 19:34:53.787366191 +0100
> +++ arch/powerpc/kernel/setup_64.c 2013-02-10 19:35:38.834035478 +0100
> @@ -186,6 +186,9 @@
> initialise_paca(&boot_paca, 0);
> setup_paca(&boot_paca);
>
> + /* Allow percpu accesses to "work" until we setup percpu data */
> + boot_paca.data_offset = 0;
> +
This is correct.
> /* Initialize lockdep early or else spinlocks will blow */
> lockdep_init();
>
> @@ -208,8 +211,6 @@
>
> /* Fix up paca fields required for the boot cpu */
> get_paca()->cpu_start = 1;
> - /* Allow percpu accesses to "work" until we setup percpu data */
> - get_paca()->data_offset = 0;
But this is not.
As you said, they are different pacas, so we need to make sure both
boot_paca, and "the paca of the boot cpu" are initialised with
data_offset = 0.
I'll send a patch to sort it.
cheers
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