linux-kernel - Re: [PATCH v7 01/12] KVM: Rename kvm_arch_flush_remote_tlb() to kvm_arch_flush_remote

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Date:   Thu, 27 Jul 2023 11:24:41 +0100
From:   Marc Zyngier <maz@...nel.org>
To:     Raghavendra Rao Ananta <rananta@...gle.com>
Cc:     Oliver Upton <oliver.upton@...ux.dev>,
        James Morse <james.morse@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Huacai Chen <chenhuacai@...nel.org>,
        Zenghui Yu <yuzenghui@...wei.com>,
        Anup Patel <anup@...infault.org>,
        Atish Patra <atishp@...shpatra.org>,
        Jing Zhang <jingzhangos@...gle.com>,
        Reiji Watanabe <reijiw@...gle.com>,
        Colton Lewis <coltonlewis@...gle.com>,
        David Matlack <dmatlack@...gle.com>,
        linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev,
        linux-mips@...r.kernel.org, kvm-riscv@...ts.infradead.org,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org, Gavin Shan <gshan@...hat.com>,
        "Philippe Mathieu-Daudé" <philmd@...aro.org>,
        Shaoqin Huang <shahuang@...hat.com>
Subject: Re: [PATCH v7 01/12] KVM: Rename kvm_arch_flush_remote_tlb() to kvm_arch_flush_remote_tlbs()

On Sat, 22 Jul 2023 03:22:40 +0100,
Raghavendra Rao Ananta <rananta@...gle.com> wrote:
> 
> From: David Matlack <dmatlack@...gle.com>
> 
> Rename kvm_arch_flush_remote_tlb() and the associated macro
> __KVM_HAVE_ARCH_FLUSH_REMOTE_TLB to kvm_arch_flush_remote_tlbs() and
> __KVM_HAVE_ARCH_FLUSH_REMOTE_TLBS respectively.
> 
> Making the name plural matches kvm_flush_remote_tlbs() and makes it more
> clear that this function can affect more than one remote TLB.
> 
> No functional change intended.
> 
> Signed-off-by: David Matlack <dmatlack@...gle.com>
> Signed-off-by: Raghavendra Rao Ananta <rananta@...gle.com>
> Reviewed-by: Gavin Shan <gshan@...hat.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@...aro.org>
> Reviewed-by: Shaoqin Huang <shahuang@...hat.com>
> ---
>  arch/mips/include/asm/kvm_host.h | 4 ++--
>  arch/mips/kvm/mips.c             | 2 +-
>  arch/x86/include/asm/kvm_host.h  | 4 ++--
>  include/linux/kvm_host.h         | 4 ++--
>  virt/kvm/kvm_main.c              | 2 +-
>  5 files changed, 8 insertions(+), 8 deletions(-)
> 
> diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h
> index 04cedf9f8811..9b0ad8f3bf32 100644
> --- a/arch/mips/include/asm/kvm_host.h
> +++ b/arch/mips/include/asm/kvm_host.h
> @@ -896,7 +896,7 @@ static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
>  static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
>  static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
>  
> -#define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLB
> -int kvm_arch_flush_remote_tlb(struct kvm *kvm);
> +#define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLBS
> +int kvm_arch_flush_remote_tlbs(struct kvm *kvm);

How about making this prototype global? I don't see a point in having
it per-architecture, specially as you are adding arm64 to that mix in
the following patch.

	M.

-- 
Without deviation from the norm, progress is not possible.