linux-kernel - Re: [PATCH v6 17/22] KVM: Terminate memslot walks via used

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Message-ID: <216d647a-e598-d5d6-e20f-9c44c9ca157f@redhat.com>
Date:   Fri, 21 Feb 2020 18:47:52 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Sean Christopherson <sean.j.christopherson@...el.com>
Cc:     Paul Mackerras <paulus@...abs.org>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Janosch Frank <frankja@...ux.ibm.com>,
        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>, Marc Zyngier <maz@...nel.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@...r.kernel.org,
        kvm-ppc@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        kvmarm@...ts.cs.columbia.edu, linux-kernel@...r.kernel.org,
        Christoffer Dall <christoffer.dall@....com>,
        Peter Xu <peterx@...hat.com>,
        Philippe Mathieu-Daudé <f4bug@...at.org>
Subject: Re: [PATCH v6 17/22] KVM: Terminate memslot walks via used_slots

On 18/02/20 22:07, Sean Christopherson wrote:
>  	tmp = id_to_memslot(__kvm_memslots(kvm, as_id), id);
> -	old = *tmp;
> -	tmp = NULL;
> +	if (tmp) {
> +		old = *tmp;
> +		tmp = NULL;
> +	} else {
> +		memset(&old, 0, sizeof(old));
> +		old.id = id;
> +	}
>  

So much for my previous brilliant suggestion. :)

Paolo