Re: [PATCH] powerpc: Disable DAWR on POWER9

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On Fri, 16 Mar 2018 13:54:56 +1100
Michael Neuling <mikey@xxxxxxxxxxx> wrote:


> diff --git a/arch/powerpc/kernel/dt_cpu_ftrs.c b/arch/powerpc/kernel/dt_cpu_ftrs.c
> index 945e2c29ad..dfb77b43f1 100644
> --- a/arch/powerpc/kernel/dt_cpu_ftrs.c
> +++ b/arch/powerpc/kernel/dt_cpu_ftrs.c
> @@ -62,7 +62,6 @@ struct dt_cpu_feature {
>  	    CPU_FTR_COHERENT_ICACHE | \
>  	    CPU_FTR_STCX_CHECKS_ADDRESS |\
>  	    CPU_FTR_POPCNTB | CPU_FTR_POPCNTD | \
> -	    CPU_FTR_DAWR | \
>  	    CPU_FTR_ARCH_206 |\
>  	    CPU_FTR_ARCH_207S)

This may be better to clear in cpufeatures_cpu_quirks(). This is supposed
to work on POWER8 as well.

Thanks,
Nick

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