On Thu, Aug 13, 2020 at 10:12:00AM +0000, Christophe Leroy wrote:
> -#ifndef CONFIG_PPC_8xx
> +#if !defined(CONFIG_PPC_8xx) && !defined(CONFIG_PPC_BOOK3S_32)
>  _GLOBAL(flush_instruction_cache)
>  #if defined(CONFIG_4xx)
>       lis     r3, KERNELBASE@h
> @@ -290,18 +289,11 @@ _GLOBAL(flush_instruction_cache)
>       mfspr   r3,SPRN_L1CSR1
>       ori     r3,r3,L1CSR1_ICFI|L1CSR1_ICLFR
>       mtspr   SPRN_L1CSR1,r3
> -#elif defined(CONFIG_PPC_BOOK3S_601)
> -     blr                     /* for 601, do nothing */
> -#else
> -     /* 603/604 processor - use invalidate-all bit in HID0 */
> -     mfspr   r3,SPRN_HID0
> -     ori     r3,r3,HID0_ICFI
> -     mtspr   SPRN_HID0,r3
>  #endif /* CONFIG_4xx */
>       isync
>       blr
>  EXPORT_SYMBOL(flush_instruction_cache)
> -#endif /* CONFIG_PPC_8xx */
> +#endif /* CONFIG_PPC_8xx || CONFIG_PPC_BOOK3S_32 */

What about untangling this into entirely separate versions instead
of the ifdef mess?  Also the export does not seem to be needed at all.

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