linux-kernel - Re: [PATCH v2 2/4] crypto: ccp: Export PSP security bits to userspace

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Message-ID: <1c2e7840-23c2-a0ff-abd8-ab216ad3480a@amd.com>
Date:   Thu, 31 Mar 2022 15:03:35 -0500
From:   Tom Lendacky <thomas.lendacky@....com>
To:     Mario Limonciello <mario.limonciello@....com>,
        John Allen <john.allen@....com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S . Miller" <davem@...emloft.net>
Cc:     open list <linux-kernel@...r.kernel.org>,
        "open list:AMD CRYPTOGRAPHIC COPROCESSOR (CCP) DRIVER" 
        <linux-crypto@...r.kernel.org>,
        Kerneis Gabriel <Gabriel.Kerneis@....gouv.fr>,
        Richard Hughes <hughsient@...il.com>
Subject: Re: [PATCH v2 2/4] crypto: ccp: Export PSP security bits to userspace

On 3/29/22 11:41, Mario Limonciello wrote:
> The PSP sets several pre-defined bits in the capabilities
> register to indicate that security attributes of the platform.
> 
> Export these attributes into userspace for administrators to
> confirm platform is properly locked down.
> 
> Signed-off-by: Mario Limonciello <mario.limonciello@....com>

Acked-by: Tom Lendacky <thomas.lendacky@....com>

> ---
>   Documentation/ABI/testing/sysfs-driver-ccp | 87 ++++++++++++++++++++++
>   drivers/crypto/ccp/psp-dev.h               | 17 +++++
>   drivers/crypto/ccp/sp-pci.c                | 62 +++++++++++++++
>   3 files changed, 166 insertions(+)
>   create mode 100644 Documentation/ABI/testing/sysfs-driver-ccp
>