linux-kernel - Re: [PATCH V2] selftests/vm: Add protection_keys tests to run

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Date:   Wed, 15 Jun 2022 17:34:46 +0530
From:   "Shetty, Kalpana" <kalpana.shetty@....com>
To:     Shuah Khan <skhan@...uxfoundation.org>, akpm@...ux-foundation.org,
        shuah@...nel.org, linux-mm@...ck.org,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2] selftests/vm: Add protection_keys tests to run_vmtests


On 6/14/2022 10:50 PM, Shuah Khan wrote:
> On 6/14/22 6:15 AM, Shetty, Kalpana wrote:
>>
>> On 6/14/2022 3:14 AM, Shuah Khan wrote:
>>> On 6/10/22 3:07 AM, Kalpana Shetty wrote:
>>>> Adding "protected_keys" tests to "run_vmtests.sh" would help out to 
>>>> run all VM related tests
>>>> from a single shell script.
>>>>
>>>
>>> Makes sense - can you explain why you can't just run
>>> protection_keys_32 without checks? 
>>
>> Yes; we can run protection_keys_32 without check.
>>
>>
>>> Why are you checking for VADDR64? 
>>
>> The check is added to ensure if the system is in 64-bit mode before 
>> executing 64-bit binary.
>>
>>
>
> Okay. protection_keys_32 will only be built on 32-bit system and.
> protection_keys_64 on 64-bit system.

On 64-bit system, we get both 32-bit and 64-bit binary.


>
> Won't it be better to check if binary exists and run either _32 or
> _64 instead of checking for VADDR64?

makes sense;

In this case on 64-bit platform we would run both _32 and _64 and this 
should be fine.


> thanks,
> -- Shuah

Thanks,

Kalpana