linux-kernel - Re: [PATCH v3] selftests: x86: skip the tests if prerequisites aren't fulfilled

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Date: Fri, 29 Mar 2024 09:01:07 -0600
From: Shuah Khan <skhan@...uxfoundation.org>
To: Ingo Molnar <mingo@...nel.org>
Cc: Muhammad Usama Anjum <usama.anjum@...labora.com>,
 Shuah Khan <shuah@...nel.org>, "Chang S. Bae" <chang.seok.bae@...el.com>,
 "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
 Binbin Wu <binbin.wu@...ux.intel.com>, angquan yu <angquan21@...il.com>,
 kernel@...labora.com, linux-kselftest@...r.kernel.org,
 linux-kernel@...r.kernel.org, Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: [PATCH v3] selftests: x86: skip the tests if prerequisites aren't
 fulfilled

On 3/29/24 01:36, Ingo Molnar wrote:
> 
> * Shuah Khan <skhan@...uxfoundation.org> wrote:
> 
>> On 3/27/24 05:17, Muhammad Usama Anjum wrote:
>>> Skip instead of failing when prerequisite conditions aren't fulfilled,
>>> such as invalid xstate values etc. This patch would make the tests show
>>> as skip when run by:
>>>     make -C tools/testing/selftests/ TARGETS=x86 run_tests
>>>
>>>     ...
>>>     # timeout set to 45
>>>     # selftests: x86: amx_64
>>>     # # xstate cpuid: invalid tile data size/offset: 0/0
>>>     ok 42 selftests: x86: amx_64 # SKIP
>>>     # timeout set to 45
>>>     # selftests: x86: lam_64
>>>     # # Unsupported LAM feature!
>>>     ok 43 selftests: x86: lam_64 # SKIP
>>>     ...
>>>
>>> In amx test, Move away from check_cpuid_xsave() and start using
>>> arch_prctl() to find out if amx support is present or not. In the
>>> kernels where amx isn't present, arch_prctl returns -EINVAL. Hence it is
>>> backward compatible.
>>>
>>> Reviewed-by: Chang S. Bae <chang.seok.bae@...el.com>
>>> Acked-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
>>> Reviewed-by: Binbin Wu <binbin.wu@...ux.intel.com>
>>> Signed-off-by: Muhammad Usama Anjum <usama.anjum@...labora.com>
>>> ---
>>> Changes since v2:
>>> - Update the changelog
>>>
>>
>> Thank you - applied to linux-kselftest next for 6.10-rc1
> 
> Please don't, I've applied the patch to tip:x86/cpu with a tidied up
> changelog.
> 

Thanks. I will drop it.

thanks,
-- Shuah