linux-kernel - Re: [PATCH 08/30] KVM: nSVM: move map argument out of enter_svm_guest

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Message-ID: <5fa0a52e-3b67-b545-d74a-7e4050e64559@redhat.com>
Date:   Fri, 29 May 2020 21:04:37 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Krish Sadhukhan <krish.sadhukhan@...cle.com>,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Subject: Re: [PATCH 08/30] KVM: nSVM: move map argument out of
 enter_svm_guest_mode

On 29/05/20 20:10, Krish Sadhukhan wrote:
>> Unmapping the nested VMCB in enter_svm_guest_mode is a bit of a wart,
>> since the map is not used elsewhere in the function.  There are
>> just two calls, so move it there.
> 
> The last sentence sounds bit incomplete.

Good point---more precisely, "calls" should be "callers".  "It" refers
to "unmapping".

> Also, does it make sense to mention the reason why unmapping is not
> required before we enter guest mode ?

Unmapping is a host operation and is not visible by the guest; is this
what you mean?

Paolo