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SubjectRe: [PATCH] powerpc/32s: fix initial setup of segment registers on secondary CPU
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Le 11/06/2019 à 17:47, Christophe Leroy a écrit :
> The patch referenced below moved the loading of segment registers
> out of load_up_mmu() in order to do it earlier in the boot sequence.
> However, the secondary CPU still needs it to be done when loading up
> the MMU.
>
> Reported-by: Erhard F. <erhard_f@mailbox.org>
> Fixes: 215b823707ce ("powerpc/32s: set up an early static hash table for KASAN")

Cc: stable@vger.kernel.org

> Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
> ---
> arch/powerpc/kernel/head_32.S | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S
> index 1d5f1bd0dacd..f255e22184b4 100644
> --- a/arch/powerpc/kernel/head_32.S
> +++ b/arch/powerpc/kernel/head_32.S
> @@ -752,6 +752,7 @@ __secondary_start:
> stw r0,0(r3)
>
> /* load up the MMU */
> + bl load_segment_registers
> bl load_up_mmu
>
> /* ptr to phys current thread */
>

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