linux-kernel - Re: [PATCH v6 29/34] kvm: x86: svm: Support Secure Memory Encryption within KVM

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Date:   Thu, 15 Jun 2017 11:55:59 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Tom Lendacky <thomas.lendacky@....com>
Cc:     linux-arch@...r.kernel.org, linux-efi@...r.kernel.org,
        kvm@...r.kernel.org, linux-doc@...r.kernel.org, x86@...nel.org,
        kexec@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kasan-dev@...glegroups.com, linux-mm@...ck.org,
        iommu@...ts.linux-foundation.org, Rik van Riel <riel@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>,
        Toshimitsu Kani <toshi.kani@....com>,
        Arnd Bergmann <arnd@...db.de>,
        Jonathan Corbet <corbet@....net>,
        Matt Fleming <matt@...eblueprint.co.uk>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Joerg Roedel <joro@...tes.org>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Larry Woodman <lwoodman@...hat.com>,
        Brijesh Singh <brijesh.singh@....com>,
        Ingo Molnar <mingo@...hat.com>,
        Andy Lutomirski <luto@...nel.org>,
        "H. Peter Anvin" <hpa@...or.com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Alexander Potapenko <glider@...gle.com>,
        Dave Young <dyoung@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Dmitry Vyukov <dvyukov@...gle.com>
Subject: Re: [PATCH v6 29/34] kvm: x86: svm: Support Secure Memory Encryption
 within KVM

On Wed, Jun 07, 2017 at 02:18:15PM -0500, Tom Lendacky wrote:
> Update the KVM support to work with SME. The VMCB has a number of fields
> where physical addresses are used and these addresses must contain the
> memory encryption mask in order to properly access the encrypted memory.
> Also, use the memory encryption mask when creating and using the nested
> page tables.
> 
> Signed-off-by: Tom Lendacky <thomas.lendacky@....com>
> ---
>  arch/x86/include/asm/kvm_host.h |    2 +-
>  arch/x86/kvm/mmu.c              |   12 ++++++++----
>  arch/x86/kvm/mmu.h              |    2 +-
>  arch/x86/kvm/svm.c              |   35 ++++++++++++++++++-----------------
>  arch/x86/kvm/vmx.c              |    3 ++-
>  arch/x86/kvm/x86.c              |    3 ++-
>  6 files changed, 32 insertions(+), 25 deletions(-)

Patches 27-29:

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

-- 
Regards/Gruss,
    Boris.

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