linux-kernel - Re: [PATCH 0/6] KVM: Documentation: Update document description for kvm_mmu_page and kvm_mmu_page

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Date:   Mon, 19 Jun 2023 12:00:51 +0300
From:   Zhi Wang <zhi.wang.linux@...il.com>
To:     Mingwei Zhang <mizhang@...gle.com>
Cc:     Sean Christopherson <seanjc@...gle.com>,
        Paolo Bonzini <pbonzini@...hat.com>, kvm@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jim Mattson <jmattson@...gle.com>,
        David Matlack <dmatlack@...gle.com>,
        Ben Gardon <bgardon@...gle.com>
Subject: Re: [PATCH 0/6] KVM: Documentation: Update document description for
 kvm_mmu_page and kvm_mmu_page_role

On Sun, 18 Jun 2023 00:08:50 +0000
Mingwei Zhang <mizhang@...gle.com> wrote:

> When reading the KVM MMU documentation for nested virtualization, I feel
> that the description of kvm_mmu_page (and kvm_mmu_page_role) has been
> lagging for around 1-2 years. The descriptions for several fields in struct
> kvm_mmu_page and struct kvm_mmu_page_role are missing. So I think it might
> be good to add them to make it consistent with the current code.
>

This is so nice. A trivial comment, maybe refining the tittle of PATCH 1-6 a
bit: "Add the missing comment of xxxx into xxxx". It is a little bit confusing
by just looking at the titles at the first glance, more like some members are
missing, not the comments. :)

> Note that there are still some fields not added in this series:
>  - kvm_mmu_page.nx_huge_page_disallowed
>  - kvm_mmu_page.possible_nx_huge_page_link
>  - kvm_mmu_page.hash_link
>  - kvm_mmu_page.link
> 
> For the above, I thought the description might be just better to be
> inlined or there is already good description inlined.
> 
> Mingwei Zhang (6):
>   KVM: Documentation: Add the missing guest_mode in kvm_mmu_page_role
>   KVM: Documentation: Update the field name gfns in kvm_mmu_page
>   KVM: Documentation: Add the missing ptep in kvm_mmu_page
>   KVM: Documentation: Add the missing tdp_mmu_root_count into
>     kvm_mmu_page
>   KVM: Documentation: Add the missing mmu_valid_gen into kvm_mmu_page
>   KVM: Documentation: Add the missing tdp_mmu_page into kvm_mmu_page
> 
>  Documentation/virt/kvm/x86/mmu.rst | 22 +++++++++++++++++++++-
>  1 file changed, 21 insertions(+), 1 deletion(-)
> 
> 
> base-commit: 265b97cbc22e0f67f79a71443b60dc1237ca5ee6