linux-kernel - Re: [RFC PATCH v2 19/32] crypto: ccp: Introduce the AMD Secure Processor device

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Date:   Thu, 2 Mar 2017 13:11:04 -0600
From:   Brijesh Singh <brijesh.singh@....com>
To:     Mark Rutland <mark.rutland@....com>
CC:     <brijesh.singh@....com>, <simon.guinot@...uanux.org>,
        <linux-efi@...r.kernel.org>, <kvm@...r.kernel.org>,
        <rkrcmar@...hat.com>, <matt@...eblueprint.co.uk>,
        <linux-pci@...r.kernel.org>, <linus.walleij@...aro.org>,
        <gary.hook@....com>, <linux-mm@...ck.org>,
        <paul.gortmaker@...driver.com>, <hpa@...or.com>, <cl@...ux.com>,
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        <davem@...emloft.net>
Subject: Re: [RFC PATCH v2 19/32] crypto: ccp: Introduce the AMD Secure
 Processor device

Hi Mark,

On 03/02/2017 11:39 AM, Mark Rutland wrote:
> On Thu, Mar 02, 2017 at 10:16:15AM -0500, Brijesh Singh wrote:
>> The CCP device is part of the AMD Secure Processor. In order to expand the
>> usage of the AMD Secure Processor, create a framework that allows functional
>> components of the AMD Secure Processor to be initialized and handled
>> appropriately.
>>
>> Signed-off-by: Brijesh Singh <brijesh.singh@....com>
>> Signed-off-by: Tom Lendacky <thomas.lendacky@....com>
>> ---
>>  drivers/crypto/Kconfig           |   10 +
>>  drivers/crypto/ccp/Kconfig       |   43 +++--
>>  drivers/crypto/ccp/Makefile      |    8 -
>>  drivers/crypto/ccp/ccp-dev-v3.c  |   86 +++++-----
>>  drivers/crypto/ccp/ccp-dev-v5.c  |   73 ++++-----
>>  drivers/crypto/ccp/ccp-dev.c     |  137 +++++++++-------
>>  drivers/crypto/ccp/ccp-dev.h     |   35 ----
>>  drivers/crypto/ccp/sp-dev.c      |  308 ++++++++++++++++++++++++++++++++++++
>>  drivers/crypto/ccp/sp-dev.h      |  140 ++++++++++++++++
>>  drivers/crypto/ccp/sp-pci.c      |  324 ++++++++++++++++++++++++++++++++++++++
>>  drivers/crypto/ccp/sp-platform.c |  268 +++++++++++++++++++++++++++++++
>>  include/linux/ccp.h              |    3
>>  12 files changed, 1240 insertions(+), 195 deletions(-)
>>  create mode 100644 drivers/crypto/ccp/sp-dev.c
>>  create mode 100644 drivers/crypto/ccp/sp-dev.h
>>  create mode 100644 drivers/crypto/ccp/sp-pci.c
>>  create mode 100644 drivers/crypto/ccp/sp-platform.c
>
>> diff --git a/drivers/crypto/ccp/Makefile b/drivers/crypto/ccp/Makefile
>> index 346ceb8..8127e18 100644
>> --- a/drivers/crypto/ccp/Makefile
>> +++ b/drivers/crypto/ccp/Makefile
>> @@ -1,11 +1,11 @@
>> -obj-$(CONFIG_CRYPTO_DEV_CCP_DD) += ccp.o
>> -ccp-objs := ccp-dev.o \
>> +obj-$(CONFIG_CRYPTO_DEV_SP_DD) += ccp.o
>> +ccp-objs := sp-dev.o sp-platform.o
>> +ccp-$(CONFIG_PCI) += sp-pci.o
>> +ccp-$(CONFIG_CRYPTO_DEV_CCP) += ccp-dev.o \
>>  	    ccp-ops.o \
>>  	    ccp-dev-v3.o \
>>  	    ccp-dev-v5.o \
>> -	    ccp-platform.o \
>>  	    ccp-dmaengine.o
>
> It looks like ccp-platform.c has morphed into sp-platform.c (judging by
> the compatible string and general shape of the code), and the original
> ccp-platform.c is no longer built.
>
> Shouldn't ccp-platform.c be deleted by this patch?
>

Good catch. Both ccp-platform.c and ccp-pci.c should have been deleted 
by this patch. I missed deleting it, will fix in next rev.

~ Brijesh