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

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Date:   Wed, 22 Sep 2021 15:54:02 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Ashish Kalra <ashish.kalra@....com>
Cc:     Sean Christopherson <seanjc@...gle.com>,
        Steve Rutherford <srutherford@...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 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.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette