linux-kernel - Re: [PATCH v7 00/23] KVM: Extend Eager Page Splitting to the shadow MMU

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Date:   Thu, 23 Jun 2022 23:50:45 +0000
From:   David Matlack <dmatlack@...gle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org, maz@...nel.org,
        anup@...infault.org, seanjc@...gle.com, bgardon@...gle.com,
        peterx@...hat.com, maciej.szmigiero@...cle.com,
        kvmarm@...ts.cs.columbia.edu, linux-mips@...r.kernel.org,
        kvm-riscv@...ts.infradead.org, pfeiner@...gle.com,
        jiangshanlai@...il.com
Subject: Re: [PATCH v7 00/23] KVM: Extend Eager Page Splitting to the shadow
 MMU

On Wed, Jun 22, 2022 at 03:26:47PM -0400, Paolo Bonzini wrote:
> For the description of the "why" of this patch, I'll just direct you to
> David's excellent cover letter from v6, which can be found at
> https://lore.kernel.org/r/20220516232138.1783324-1-dmatlack@google.com.
> 
> This version mostly does the following:
> 
> - apply the feedback from Sean and other reviewers, which is mostly
>   aesthetic
> 
> - replace the refactoring of drop_large_spte()/__drop_large_spte()
>   with my own version.  The insight there is that drop_large_spte()
>   is always followed by {,__}link_shadow_page(), so the call is
>   moved there
> 
> - split the TLB flush optimization into a separate patch, mostly
>   to perform the previous refactoring independent of the optional
>   TLB flush
> 
> - rename a few functions from *nested_mmu* to *shadow_mmu*
> 

Thanks for the v7 Paolo!