linux-kernel - Re: [PATCH 2/4] selftests/sgx: Store base address and size in test enclave

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Message-ID: <818446ff-082f-7bef-eded-9fb14524db13@cs.kuleuven.be>
Date:   Thu, 20 Jul 2023 21:18:41 +0200
From:   Jo Van Bulck <jo.vanbulck@...kuleuven.be>
To:     Jarkko Sakkinen <jarkko@...nel.org>, linux-sgx@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     dave.hansen@...ux.intel.com
Subject: Re: [PATCH 2/4] selftests/sgx: Store base address and size in test
 enclave

On 20.07.23 19:29, Jarkko Sakkinen wrote:

>> diff --git a/tools/testing/selftests/sgx/main.c b/tools/testing/selftests/sgx/main.c
>> index d3c7a39f4..bad963c79 100644
>> --- a/tools/testing/selftests/sgx/main.c
>> +++ b/tools/testing/selftests/sgx/main.c
>> @@ -182,6 +1827 @@ static bool setup_test_encl(unsigned long heap_size, struct encl *encl,
>>   	FILE *maps_file;
>>   	unsigned int i;
>>   	void *addr;
>> +	uint64_t encl_size_addr;
> 
> Should be the first declaration (reverse xmas tree order).

Will do

> I'd rename this as encl_end, as the current name is cryptic.

Thank you, agreed the current name is cryptic. However, encl_end is 
incorrect as this is the location in the enclave that stores the _size_ 
and the location itself is also _not_ at the end of the enclave.

I'll rename this in the next patch revision to encl_size_pt and make it 
of type uint64_t*, which seems more logical to me. Let me know if you 
prefer otherwise!

Best,
Jo