linux-kernel - Re: [PATCH v6 1/5] x86/kvm: Add AMD SEV specific Hypercall3

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Message-ID: <CABayD+eFeu1mWG-UGXC0QZuYu68B9wJNWJhjUo=HHgc_jsfBag@mail.gmail.com>
Date:   Tue, 28 Sep 2021 12:05:07 -0700
From:   Steve Rutherford <srutherford@...gle.com>
To:     Borislav Petkov <bp@...en8.de>
Cc:     Ashish Kalra <Ashish.Kalra@....com>,
        Sean Christopherson <seanjc@...gle.com>, pbonzini@...hat.com,
        tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
        joro@...tes.org, thomas.lendacky@....com, x86@...nel.org,
        kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        brijesh.singh@....com, dovmurik@...ux.ibm.com, tobin@...ux.ibm.com,
        jejb@...ux.ibm.com, dgilbert@...hat.com
Subject: Re: [PATCH v6 1/5] x86/kvm: Add AMD SEV specific Hypercall3

On Wed, Sep 22, 2021 at 6:54 AM Borislav Petkov <bp@...en8.de> wrote:
>
> On Wed, Sep 22, 2021 at 12:10:08PM +0000, Ashish Kalra wrote:
> > Then isn't it cleaner to simply do it via the paravirt_ops interface,
> > i.e, pv_ops.mmu.notify_page_enc_status_changed() where the callback
> > is only set when SEV and live migration feature are supported and
> > invoked through early_set_memory_decrypted()/encrypted().
> >
> > Another memory encryption platform can set it's callback accordingly.
>
> Yeah, that sounds even cleaner to me.
If I'm not mistaken, this is what the patch set does now?