linux-kernel - Re: [PATCH v2 4/4] selftests/resctrl: Enable MBA/MBA tests on AMD

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Date: Thu, 30 May 2024 11:08:40 -0500
From: "Moger, Babu" <babu.moger@....com>
To: Reinette Chatre <reinette.chatre@...el.com>,
 Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Cc: fenghua.yu@...el.com, shuah@...nel.org,
 LKML <linux-kernel@...r.kernel.org>, linux-kselftest@...r.kernel.org,
 Maciej Wieczór-Retman <maciej.wieczor-retman@...el.com>,
 peternewman@...gle.com, eranian@...gle.com
Subject: Re: [PATCH v2 4/4] selftests/resctrl: Enable MBA/MBA tests on AMD

Hi Reinette,

On 5/9/24 16:11, Reinette Chatre wrote:
> 
> 
> On 4/26/2024 12:06 AM, Ilpo Järvinen wrote:
>> On Thu, 25 Apr 2024, Babu Moger wrote:
>>
>>> Enable MBA/MBM tests if UMC (Unified Memory Controller) support is
>>> available on the system. Tests will be skipped otherwise.
>>>
>>> Update noncont_cat_run_test to check for vendor. AMD supports
>>> non contiguous CBM masks but does not report it via CPUID.
>>>
>>> Signed-off-by: Babu Moger <babu.moger@....com>
>>> ---
>>>  tools/testing/selftests/resctrl/cat_test.c | 2 +-
>>>  tools/testing/selftests/resctrl/mba_test.c | 1 -
>>>  tools/testing/selftests/resctrl/mbm_test.c | 1 -
>>>  3 files changed, 1 insertion(+), 3 deletions(-)
>>>
>>> diff --git a/tools/testing/selftests/resctrl/cat_test.c b/tools/testing/selftests/resctrl/cat_test.c
>>> index 4cb991be8e31..b682eaf65bfd 100644
>>> --- a/tools/testing/selftests/resctrl/cat_test.c
>>> +++ b/tools/testing/selftests/resctrl/cat_test.c
>>> @@ -314,7 +314,7 @@ static int noncont_cat_run_test(const struct resctrl_test *test,
>>>  	else
>>>  		return -EINVAL;
>>>  
>>> -	if (sparse_masks != ((ecx >> 3) & 1)) {
>>> +	if ((get_vendor() == ARCH_INTEL) && sparse_masks != ((ecx >> 3) & 1)) {
>>
>> This looks independent change to me which should be put into own patch.
>>
> 
> Own patch that is separate from this series. This should go in
> as a fix with
> Fixes: ae638551ab64 ("selftests/resctrl: Add non-contiguous CBMs CAT test")
> 

Sure. Will do.

-- 
Thanks
Babu Moger