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SubjectRe: [Part2 PATCH v5 10/31] crypto: ccp: Add Platform Security Processor (PSP) device support
On Wed, Oct 04, 2017 at 08:13:51AM -0500, Brijesh Singh wrote:
> The Platform Security Processor (PSP) is part of AMD Secure Processor
> (AMD-SP), PSP is a dedicated processor that provides the support for
> key management commands in a Secure Encrypted Virtualization (SEV) mode,
> along with software-based Trusted Execution Environment (TEE) to enable
> the third-party trusted applications.
>
> Note that the key management functionality provided by the SEV firmware
> can be used outside the kvm-amd driver hence we don't do depends on
> CONFIG_KVM_AMD.

Minor corrections:

"The Platform Security Processor (PSP) is part of the AMD Secure
Processor (AMD-SP) functionality. The PSP is a dedicated processor
that provides support for key management commands in Secure Encrypted
Virtualization (SEV) mode, along with software-based Trusted Execution
Environment (TEE) to enable third-party trusted applications.

Note that the key management functionality provided by the SEV firmware
can be used outside of the kvm-amd driver hence it doesn't need to
depend on CONFIG_KVM_AMD."

...

> diff --git a/drivers/crypto/ccp/Kconfig b/drivers/crypto/ccp/Kconfig
> index 9c84f9838931..454c25d9f197 100644
> --- a/drivers/crypto/ccp/Kconfig
> +++ b/drivers/crypto/ccp/Kconfig
> @@ -33,3 +33,14 @@ config CRYPTO_DEV_CCP_CRYPTO
> Support for using the cryptographic API with the AMD Cryptographic
> Coprocessor. This module supports offload of SHA and AES algorithms.
> If you choose 'M' here, this module will be called ccp_crypto.
> +
> +config CRYPTO_DEV_SP_PSP
> + bool "Platform Security Processor (PSP) device"
> + default y
> + depends on CRYPTO_DEV_CCP_DD && X86_64
> + help
> + Provide the support for the AMD Platform Security Processor (PSP).
> + The PSP is a dedicated processor that provides support for key
> + management commands in Secure Encrypted Virtualization (SEV) mode,
> + along with software-based Trusted Execution Environment (TEE) to
> + enable the third-party trusted applications.

Minor corrections:

---
diff --git a/drivers/crypto/ccp/Kconfig b/drivers/crypto/ccp/Kconfig
index 454c25d9f197..b9dfae47aefd 100644
--- a/drivers/crypto/ccp/Kconfig
+++ b/drivers/crypto/ccp/Kconfig
@@ -39,8 +39,8 @@ config CRYPTO_DEV_SP_PSP
default y
depends on CRYPTO_DEV_CCP_DD && X86_64
help
- Provide the support for the AMD Platform Security Processor (PSP).
+ Provide support for the AMD Platform Security Processor (PSP).
The PSP is a dedicated processor that provides support for key
management commands in Secure Encrypted Virtualization (SEV) mode,
along with software-based Trusted Execution Environment (TEE) to
- enable the third-party trusted applications.
+ enable third-party trusted applications.
with that taken care of:

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

--
Regards/Gruss,
Boris.

SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
--

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