linux-kernel - Re: [PATCH 1/2] powerpc: kvm: rectify selection to PPC

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Date:   Thu, 19 Aug 2021 11:45:37 +0200
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Lukas Bulwahn <lukas.bulwahn@...il.com>,
        Paul Mackerras <paulus@...abs.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Michael Neuling <mikey@...ling.org>,
        Anshuman Khandual <anshuman.khandual@....com>,
        kvm-ppc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org
Subject: Re: [PATCH 1/2] powerpc: kvm: rectify selection to PPC_DAWR



Le 19/08/2021 à 11:32, Lukas Bulwahn a écrit :
> Commit a278e7ea608b ("powerpc: Fix compile issue with force DAWR")
> selects the non-existing config PPC_DAWR_FORCE_ENABLE for config
> KVM_BOOK3S_64_HANDLER. As this commit also introduces a config PPC_DAWR,
> it probably intends to select PPC_DAWR instead.
> 
> Rectify the selection in config KVM_BOOK3S_64_HANDLER to PPC_DAWR.
> 
> The issue was identified with ./scripts/checkkconfigsymbols.py.
> 
> Fixes: a278e7ea608b ("powerpc: Fix compile issue with force DAWR")
> Signed-off-by: Lukas Bulwahn <lukas.bulwahn@...il.com>
> ---
>   arch/powerpc/kvm/Kconfig | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig
> index e45644657d49..aa29ea56c80a 100644
> --- a/arch/powerpc/kvm/Kconfig
> +++ b/arch/powerpc/kvm/Kconfig
> @@ -38,7 +38,7 @@ config KVM_BOOK3S_32_HANDLER
>   config KVM_BOOK3S_64_HANDLER
>   	bool
>   	select KVM_BOOK3S_HANDLER
> -	select PPC_DAWR_FORCE_ENABLE
> +	select PPC_DAWR

That's useless, see https://elixir.bootlin.com/linux/v5.14-rc6/source/arch/powerpc/Kconfig#L267

In arch/powerpc/Kconfig, you already have:

	select PPC_DAWR				if PPC64




>   
>   config KVM_BOOK3S_PR_POSSIBLE
>   	bool
>