linux-kernel - Re: [PATCH 10/26] KVM: s390: Stop selecting and depending on HAVE

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Date:   Mon, 18 Sep 2023 15:38:35 +0200
From:   Claudio Imbrenda <imbrenda@...ux.ibm.com>
To:     Sean Christopherson <seanjc@...gle.com>
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, Marc Zyngier <maz@...nel.org>,
        Oliver Upton <oliver.upton@...ux.dev>,
        Huacai Chen <chenhuacai@...nel.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Anup Patel <anup@...infault.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ux.ibm.com>,
        Janosch Frank <frankja@...ux.ibm.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Tony Krowiak <akrowiak@...ux.ibm.com>,
        Halil Pasic <pasic@...ux.ibm.com>,
        Jason Herne <jjherne@...ux.ibm.com>,
        Harald Freudenberger <freude@...ux.ibm.com>,
        Alex Williamson <alex.williamson@...hat.com>,
        Andy Lutomirski <luto@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev,
        linux-mips@...r.kernel.org, kvm@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, kvm-riscv@...ts.infradead.org,
        linux-riscv@...ts.infradead.org, linux-s390@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        Anish Ghulati <aghulati@...gle.com>,
        Venkatesh Srinivas <venkateshs@...omium.org>,
        Andrew Thornton <andrewth@...gle.com>
Subject: Re: [PATCH 10/26] KVM: s390: Stop selecting and depending on
 HAVE_KVM

On Fri, 15 Sep 2023 17:31:02 -0700
Sean Christopherson <seanjc@...gle.com> wrote:

> Now that nothing in s390 or architecture agnostic code consumes HAVE_KVM,
> stop selecting it in s390.  This is one of several steps towards deleting
> HAVE_KVM from the common KVM Kconfig.
> 
> Signed-off-by: Sean Christopherson <seanjc@...gle.com>
> ---
>  arch/s390/Kconfig     | 1 -
>  arch/s390/kvm/Kconfig | 1 -
>  2 files changed, 2 deletions(-)
> 
> diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
> index ae29e4392664..8a5dca0036d9 100644
> --- a/arch/s390/Kconfig
> +++ b/arch/s390/Kconfig
> @@ -193,7 +193,6 @@ config S390
>  	select HAVE_KPROBES
>  	select HAVE_KPROBES_ON_FTRACE
>  	select HAVE_KRETPROBES
> -	select HAVE_KVM
>  	select HAVE_LIVEPATCH
>  	select HAVE_MEMBLOCK_PHYS_MAP
>  	select HAVE_MOD_ARCH_SPECIFIC
> diff --git a/arch/s390/kvm/Kconfig b/arch/s390/kvm/Kconfig
> index 459d536116a6..9056cee72945 100644
> --- a/arch/s390/kvm/Kconfig
> +++ b/arch/s390/kvm/Kconfig
> @@ -19,7 +19,6 @@ if VIRTUALIZATION
>  config KVM
>  	def_tristate y
>  	prompt "Kernel-based Virtual Machine (KVM) support"
> -	depends on HAVE_KVM
>  	select PREEMPT_NOTIFIERS
>  	select HAVE_KVM_CPU_RELAX_INTERCEPT
>  	select HAVE_KVM_VCPU_ASYNC_IOCTL

it looks like we don't use HAVE_KVM on s390x

Reviewed-by: Claudio Imbrenda <imbrenda@...ux.ibm.com>