Date: Sun, 11 Jun 2017 21:44:11 +0200
From: Borislav Petkov <bp@alien8.de>
To: Tom Lendacky <thomas.lendacky@amd.com>
Cc: linux-arch@vger.kernel.org, linux-efi@vger.kernel.org,
        kvm@vger.kernel.org, linux-doc@vger.kernel.org, x86@kernel.org,
        kexec@lists.infradead.org, linux-kernel@vger.kernel.org,
        kasan-dev@googlegroups.com, linux-mm@kvack.org,
        iommu@lists.linux-foundation.org, Rik van Riel <riel@redhat.com>,
        Radim =?utf-8?B?S3LEjW3DocWZ?= <rkrcmar@redhat.com>,
        Toshimitsu Kani <toshi.kani@hpe.com>, Arnd Bergmann <arnd@arndb.de>,
        Jonathan Corbet <corbet@lwn.net>,
        Matt Fleming <matt@codeblueprint.co.uk>,
        "Michael S. Tsirkin" <mst@redhat.com>, Joerg Roedel <joro@8bytes.org>,
        Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
        Paolo Bonzini <pbonzini@redhat.com>,
        Larry Woodman <lwoodman@redhat.com>,
        Brijesh Singh <brijesh.singh@amd.com>, Ingo Molnar <mingo@redhat.com>,
        Andy Lutomirski <luto@kernel.org>, "H. Peter Anvin" <hpa@zytor.com>,
        Andrey Ryabinin <aryabinin@virtuozzo.com>,
        Alexander Potapenko <glider@google.com>,
        Dave Young <dyoung@redhat.com>, Thomas Gleixner <tglx@linutronix.de>,
        Dmitry Vyukov <dvyukov@google.com>
Subject: Re: [PATCH v6 18/34] x86/efi: Update EFI pagetable creation to work
 with SME
Message-ID: <20170611194411.shbwwf34ftumipab@pd.tnic>
References: <20170607191309.28645.15241.stgit@tlendack-t1.amdoffice.net>
 <20170607191627.28645.4398.stgit@tlendack-t1.amdoffice.net>
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On Wed, Jun 07, 2017 at 02:16:27PM -0500, Tom Lendacky wrote:
> When SME is active, pagetable entries created for EFI need to have the
> encryption mask set as necessary.
> 
> When the new pagetable pages are allocated they are mapped encrypted. So,
> update the efi_pgt value that will be used in cr3 to include the encryption
> mask so that the PGD table can be read successfully. The pagetable mapping
> as well as the kernel are also added to the pagetable mapping as encrypted.
> All other EFI mappings are mapped decrypted (tables, etc.).
> 
> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
> ---
>  arch/x86/platform/efi/efi_64.c |   15 +++++++++++----
>  1 file changed, 11 insertions(+), 4 deletions(-)

patches 15-18:

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

-- 
Regards/Gruss,
    Boris.

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