linux-kernel - Re: [Part2 PATCH v6 08/38] KVM: Introduce KVM_MEMORY_ENCRYPT_{UN,}REG

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Date:   Fri, 20 Oct 2017 17:00:38 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Brijesh Singh <brijesh.singh@....com>
Cc:     kvm@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>,
        Joerg Roedel <joro@...tes.org>,
        Tom Lendacky <thomas.lendacky@....com>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [Part2 PATCH v6 08/38] KVM: Introduce
 KVM_MEMORY_ENCRYPT_{UN,}REG_REGION ioctl

On Thu, Oct 19, 2017 at 09:33:43PM -0500, Brijesh Singh wrote:
> If hardware supports memory encryption then KVM_MEMORY_ENCRYPT_REG_REGION
> and KVM_MEMORY_ENCRYPT_UNREG_REGION ioctl's can be used by userspace to
> register/unregister the guest memory regions which may contain the encrypted
> data (e.g guest RAM, PCI BAR, SMRAM etc).
> 
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Ingo Molnar <mingo@...hat.com>
> Cc: "H. Peter Anvin" <hpa@...or.com>
> Cc: Paolo Bonzini <pbonzini@...hat.com>
> Cc: "Radim Krčmář" <rkrcmar@...hat.com>
> Cc: Joerg Roedel <joro@...tes.org>
> Cc: Borislav Petkov <bp@...e.de>
> Cc: Tom Lendacky <thomas.lendacky@....com>
> Cc: x86@...nel.org
> Cc: kvm@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org
> Signed-off-by: Brijesh Singh <brijesh.singh@....com>
> ---
>  Documentation/virtual/kvm/api.txt | 34 ++++++++++++++++++++++++++++++++++
>  arch/x86/include/asm/kvm_host.h   |  2 ++
>  arch/x86/kvm/x86.c                | 24 ++++++++++++++++++++++++
>  include/uapi/linux/kvm.h          |  8 ++++++++
>  4 files changed, 68 insertions(+)

Reviewed-by: Borislav Petkov <bp@...e.de>
Improvements-by: Borislav Petkov <bp@...e.de>

-- 
Regards/Gruss,
    Boris.

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