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Message-ID: <9a2fc29b-ab4c-b13a-0ac3-772a47039750@arm.com>
Date:   Fri, 24 Mar 2023 15:45:52 +0530
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Subject: Re: [PATCH 0/5] selftests/mm: Implement support for arm64 on va
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To:     Andrew Morton <akpm@linux-foundation.org>,
        Chaitanya S Prakash <chaitanyas.prakash@arm.com>
Cc:     linux-mm@kvack.org, linux-kernel@vger.kernel.org,
        "Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com>,
        "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
        Shuah Khan <shuah@kernel.org>, linux-kselftest@vger.kernel.org
References: <20230323105243.2807166-1-chaitanyas.prakash@arm.com>
 <20230323144910.b07df164acc1d85bc76dc933@linux-foundation.org>
From:   Anshuman Khandual <anshuman.khandual@arm.com>
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On 3/24/23 03:19, Andrew Morton wrote:
> On Thu, 23 Mar 2023 16:22:38 +0530 Chaitanya S Prakash <chaitanyas.prakash@arm.com> wrote:
> 
>> The va_128TBswitch selftest is designed and implemented for PowerPC and
>> x86 architectures which support a 128TB switch, up to 256TB of virtual
>> address space and hugepage sizes of 16MB and 2MB respectively. Arm64
>> platforms on the other hand support a 256Tb switch, up to 4PB of virtual
>> address space and a default hugepage size of 512MB when 64k pagesize is
>> enabled.
>>
>> These architectural differences require introducing support for arm64
>> platforms, after which a more generic naming convention is suggested.
>> The in code comments are amended to provide a more platform independent
>> explanation of the working of the code and nr_hugepages are configured
>> as required. Finally, the file running the testcase is modified in order
>> to prevent skipping of hugetlb testcases of va_high_addr_switch.
>>
>> This series has been tested on 6.3.0-rc3 kernel, both on arm64 and x86
>> platforms.
> 
> Would it make sense to get this series into the ARM tree, so it sees
> more testing on ARM
Rather, it will be better for this series to go via the mm tree instead
(via linux-next first) for better coverage on all platforms, this being
a common test.