linux-kernel - Re: [RFC Part2 PATCH v3 10/26] KVM: Introduce KVM_MEMORY_ENCRYPT_REGISTER/UNREGISTER

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Date:   Tue, 12 Sep 2017 15:50:55 -0500
From:   Brijesh Singh <brijesh.singh@....com>
To:     Borislav Petkov <bp@...e.de>
Cc:     brijesh.singh@....com, linux-kernel@...r.kernel.org,
        x86@...nel.org, kvm@...r.kernel.org,
        Thomas Gleixner <tglx@...utronix.de>,
        Joerg Roedel <joro@...tes.org>,
        "Michael S . Tsirkin" <mst@...hat.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        \"Radim Krčmář\" <rkrcmar@...hat.com>,
        Tom Lendacky <thomas.lendacky@....com>
Subject: Re: [RFC Part2 PATCH v3 10/26] KVM: Introduce
 KVM_MEMORY_ENCRYPT_REGISTER/UNREGISTER_RAM ioctl

On 09/12/2017 03:29 PM, Borislav Petkov wrote:

...

>> +	int (*memory_encryption_unregister_ram)(struct kvm *kvm,
>> +					struct kvm_memory_encrypt_ram *ram);
>>   };
> 
> You can shorten those prefixes to "mem_enc" or so and struct
> kvm_memory_encrypt_ram to struct enc_region - which is exactly what it
> is - an encrypted memory region descriptor - and then fit each function
> on a single line.
> 

Sure, I can do that. In one of the feedback Paolo recommended
KVM_MEMORY_ENCRYPT_* ioctl name hence I tried to stick with the same name
for structure. I am flexible to use 'struct enc_region' but I personally
prefer to keep "mem" somewhere in the structure naming to indicate its for
*memory* encryption -- maybe struct kvm_mem_enc_region.

...
>> +						struct kvm_memory_encrypt_ram)
> 
> As with KVM_MEMORY_ENCRYPT_OP, those two need to be in the KVM API document.
> 

Yes, I missed updating the Documentation/virtual/kvm/api.txt for these new
ioctls. I will update it.