linux-kernel - Re: [RFC PATCH v3 1/6] crypto: ccp - rename psp-dev files to sev-dev

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Date:   Tue, 17 Dec 2019 18:18:00 -0600
From:   Gary R Hook <gary.hook@....com>
To:     Rijo Thomas <Rijo-john.Thomas@....com>,
        "David S . Miller" <davem@...emloft.net>,
        linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org
Cc:     Nimesh Easow <Nimesh.Easow@....com>,
        Devaraj Rangasamy <Devaraj.Rangasamy@....com>,
        Jens Wiklander <jens.wiklander@...aro.org>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>
Subject: Re: [RFC PATCH v3 1/6] crypto: ccp - rename psp-dev files to sev-dev

On 12/4/19 12:18 AM, Rijo Thomas wrote:
> This is a preliminary patch for creating a generic PSP device driver
> file, which will have support for both SEV and TEE (Trusted Execution
> Environment) interface.
> 
> This patch does not introduce any new functionality, but simply renames
> psp-dev.c and psp-dev.h files to sev-dev.c and sev-dev.h files
> respectively.
> 
> Cc: Ard Biesheuvel <ard.biesheuvel@...aro.org>
> Cc: Tom Lendacky <thomas.lendacky@....com>
> Cc: Jens Wiklander <jens.wiklander@...aro.org>
> Co-developed-by: Devaraj Rangasamy <Devaraj.Rangasamy@....com>
> Signed-off-by: Devaraj Rangasamy <Devaraj.Rangasamy@....com>
> Signed-off-by: Rijo Thomas <Rijo-john.Thomas@....com>
> ---
>   drivers/crypto/ccp/Makefile                 | 2 +-
>   drivers/crypto/ccp/{psp-dev.c => sev-dev.c} | 6 +++---
>   drivers/crypto/ccp/{psp-dev.h => sev-dev.h} | 8 ++++----
>   drivers/crypto/ccp/sp-pci.c                 | 2 +-
>   4 files changed, 9 insertions(+), 9 deletions(-)
>   rename drivers/crypto/ccp/{psp-dev.c => sev-dev.c} (99%)
>   rename drivers/crypto/ccp/{psp-dev.h => sev-dev.h} (90%)
> 
> diff --git a/drivers/crypto/ccp/Makefile b/drivers/crypto/ccp/Makefile
> index 6b86f1e..9dafcf2 100644
> --- a/drivers/crypto/ccp/Makefile
> +++ b/drivers/crypto/ccp/Makefile
> @@ -8,7 +8,7 @@ ccp-$(CONFIG_CRYPTO_DEV_SP_CCP) += ccp-dev.o \
>   	    ccp-dmaengine.o
>   ccp-$(CONFIG_CRYPTO_DEV_CCP_DEBUGFS) += ccp-debugfs.o
>   ccp-$(CONFIG_PCI) += sp-pci.o
> -ccp-$(CONFIG_CRYPTO_DEV_SP_PSP) += psp-dev.o
> +ccp-$(CONFIG_CRYPTO_DEV_SP_PSP) += sev-dev.o
>   
>   obj-$(CONFIG_CRYPTO_DEV_CCP_CRYPTO) += ccp-crypto.o
>   ccp-crypto-objs := ccp-crypto-main.o \
> diff --git a/drivers/crypto/ccp/psp-dev.c b/drivers/crypto/ccp/sev-dev.c
> similarity index 99%
> rename from drivers/crypto/ccp/psp-dev.c
> rename to drivers/crypto/ccp/sev-dev.c
> index 5ff842c..9a8c523 100644
> --- a/drivers/crypto/ccp/psp-dev.c
> +++ b/drivers/crypto/ccp/sev-dev.c
> @@ -1,8 +1,8 @@
>   // SPDX-License-Identifier: GPL-2.0-only
>   /*
> - * AMD Platform Security Processor (PSP) interface
> + * AMD Secure Encrypted Virtualization (SEV) interface
>    *
> - * Copyright (C) 2016,2018 Advanced Micro Devices, Inc.
> + * Copyright (C) 2016,2019 Advanced Micro Devices, Inc.
>    *
>    * Author: Brijesh Singh <brijesh.singh@....com>
>    */
> @@ -22,7 +22,7 @@
>   #include <linux/firmware.h>
>   
>   #include "sp-dev.h"
> -#include "psp-dev.h"
> +#include "sev-dev.h"
>   
>   #define DEVICE_NAME		"sev"
>   #define SEV_FW_FILE		"amd/sev.fw"
> diff --git a/drivers/crypto/ccp/psp-dev.h b/drivers/crypto/ccp/sev-dev.h
> similarity index 90%
> rename from drivers/crypto/ccp/psp-dev.h
> rename to drivers/crypto/ccp/sev-dev.h
> index dd516b3..e861647 100644
> --- a/drivers/crypto/ccp/psp-dev.h
> +++ b/drivers/crypto/ccp/sev-dev.h
> @@ -2,13 +2,13 @@
>   /*
>    * AMD Platform Security Processor (PSP) interface driver
>    *
> - * Copyright (C) 2017-2018 Advanced Micro Devices, Inc.
> + * Copyright (C) 2017-2019 Advanced Micro Devices, Inc.

Minor nit, for next time: the copyright dates should be <first 
year>,<current year>. I got this wrong the last time I updated it. :-(

The change above, for sev-dev.c, is correct.

>    *
>    * Author: Brijesh Singh <brijesh.singh@....com>
>    */
>   
> -#ifndef __PSP_DEV_H__
> -#define __PSP_DEV_H__
> +#ifndef __SEV_DEV_H__
> +#define __SEV_DEV_H__
>   
>   #include <linux/device.h>
>   #include <linux/spinlock.h>
> @@ -64,4 +64,4 @@ struct psp_device {
>   	u8 build;
>   };
>   
> -#endif /* __PSP_DEV_H */
> +#endif /* __SEV_DEV_H */
> diff --git a/drivers/crypto/ccp/sp-pci.c b/drivers/crypto/ccp/sp-pci.c
> index b29d2e6..473cf14 100644
> --- a/drivers/crypto/ccp/sp-pci.c
> +++ b/drivers/crypto/ccp/sp-pci.c
> @@ -22,7 +22,7 @@
>   #include <linux/ccp.h>
>   
>   #include "ccp-dev.h"
> -#include "psp-dev.h"
> +#include "sev-dev.h"
>   
>   #define MSIX_VECTORS			2
>   
>