linux-kernel - Re: [PATCH] kvm: mmu: fix typos in struct kvm

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Date:   Wed, 27 Jul 2022 09:32:51 -0700
From:   David Matlack <dmatlack@...gle.com>
To:     Hao Peng <flyingpenghao@...il.com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>,
        kvm list <kvm@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Sean Christopherson <seanjc@...gle.com>
Subject: Re: [PATCH] kvm: mmu: fix typos in struct kvm_arch

On Wed, Jul 27, 2022 at 3:58 AM Hao Peng <flyingpenghao@...il.com> wrote:
>
> From: Peng Hao <flyingpeng@...cent.com>
>
> No 'kvmp_mmu_pages', it should be 'kvm_mmu_page'. And
> struct kvm_mmu_pages and struct kvm_mmu_page are different structures,
> here should be kvm_mmu_page.
> kvm_mmu_pages is defined in arch/x86/kvm/mmu/mmu.c.
>
> Signed-off-by: Peng Hao <flyingpeng@...cent.com>
> ---
>  arch/x86/include/asm/kvm_host.h | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
> index e8281d64a431..205a9f374e14 100644
> --- a/arch/x86/include/asm/kvm_host.h
> +++ b/arch/x86/include/asm/kvm_host.h
> @@ -1272,8 +1272,8 @@ struct kvm_arch {
>         bool tdp_mmu_enabled;
>
>         /*
> -        * List of struct kvm_mmu_pages being used as roots.
> -        * All struct kvm_mmu_pages in the list should have
> +        * List of struct kvm_mmu_page being used as roots.

I agree that "struct <name>s" is a bad/misleading way to make a struct
plural in comments. The way I prefer to do it is "<name> structs".
That avoids changing the <name> and still makes it clear it's plural.
So in this case the comment would be:

/*
 * List of kvm_mmu_page structs being used as roots.
 * All kvm_mmu_page structs in the list should have
 * tdp_mmu_page set.
 */

> +        * All struct kvm_mmu_page in the list should have
>          * tdp_mmu_page set.
>          *
>          * For reads, this list is protected by:
> @@ -1292,8 +1292,8 @@ struct kvm_arch {
>         struct list_head tdp_mmu_roots;
>
>         /*
> -        * List of struct kvmp_mmu_pages not being used as roots.
> -        * All struct kvm_mmu_pages in the list should have
> +        * List of struct kvm_mmu_page not being used as roots.
> +        * All struct kvm_mmu_page in the list should have
>          * tdp_mmu_page set and a tdp_mmu_root_count of 0.
>          */
>         struct list_head tdp_mmu_pages;
> --
> 2.27.0