linux-kernel - Re: [PATCH v2 14/15] KVM: Terminate memslot walks via used

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Message-ID: <20191024194214.GB28043@linux.intel.com>
Date:   Thu, 24 Oct 2019 12:42:14 -0700
From:   Sean Christopherson <sean.j.christopherson@...el.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     James Hogan <jhogan@...nel.org>,
        Paul Mackerras <paulus@...abs.org>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Janosch Frank <frankja@...ux.ibm.com>,
        Radim Krčmář <rkrcmar@...hat.com>,
        Marc Zyngier <maz@...nel.org>,
        David Hildenbrand <david@...hat.com>,
        Cornelia Huck <cohuck@...hat.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>,
        James Morse <james.morse@....com>,
        Julien Thierry <julien.thierry.kdev@...il.com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        linux-mips@...r.kernel.org, kvm-ppc@...r.kernel.org,
        kvm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        kvmarm@...ts.cs.columbia.edu, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 14/15] KVM: Terminate memslot walks via used_slots

On Thu, Oct 24, 2019 at 12:38:56PM -0700, Sean Christopherson wrote:
> On Tue, Oct 22, 2019 at 05:53:27PM +0200, Paolo Bonzini wrote:
> > On 22/10/19 17:52, Sean Christopherson wrote:
> > > 
> > > Anyways, I'm not at all opposed to adding comments, just want to make sure
> > > I'm not forgetting something.  If it's ok with you, I'll comment the code
> > > and/or functions and reply here to refine them without having to respin
> > > the whole series.
> > 
> > Yes, I agree this is better.
> 
> Here's what I ended up with.  I also added kvm_memslot_insert_back() to
> help document the purpose of incrementing used_slots, and renamed
> kvm_shift_memslots_forward()->kvm_memslot_move_backward() and
> kvm_shift_memslots_backward()->kvm_memslot_move_forward() because I was
> having trouble reconciling having the comments focus on the changed
> memslot while the names of the functions reflected what happens to the
> other memslots.

Oh, and I need to respin the series to fix build bugs on MIPS and PPC,
I'll wait to do that until I get a thumbs up on this code.