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SubjectRe: [PATCH] powerpc/64s: Don't read H_BLOCK_REMOVE characteristics in radix mode
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Le 20/05/2022 à 17:57, Laurent Dufour a écrit :
> There is no need to read the H_BLOCK_REMOVE characteristics when running in
> Radix mode because this hcall is never called.
>
> Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com>
> ---
> arch/powerpc/platforms/pseries/setup.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
> index c9fcc30a0365..654d2b999c25 100644
> --- a/arch/powerpc/platforms/pseries/setup.c
> +++ b/arch/powerpc/platforms/pseries/setup.c
> @@ -803,7 +803,8 @@ static void __init pSeries_setup_arch(void)
>
> pseries_setup_security_mitigations();
> #ifdef CONFIG_PPC_64S_HASH_MMU
> - pseries_lpar_read_hblkrm_characteristics();
> + if (!radix_enabled())
> + pseries_lpar_read_hblkrm_characteristics();
> #endif

As far as I can see the function always exists so the #ifdef can be removed.

>
> /* By default, only probe PCI (can be overridden by rtas_pci) */
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