RFR: 8252108: Modify nsk/stress/stack tests to check page size

[Nick Gasson]

Thank you for the reviews, pushed.

--
Nick

On 08/25/20 20:31 pm, Harold Seigel wrote:
> Hi Nick,
>
> The changes look good.
>
> Thanks for doing this.
>
> Harold
>
> On 8/24/2020 11:21 PM, Nick Gasson wrote:
>> Hi,
>>
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8252108
>> Webrev: http://cr.openjdk.java.net/~ngasson/8252108/webrev.1/
>>
>> As discussed on the review thread for JDK-8251490 [1], it's better to
>> have these tests enabled conditionally on 4K page size, rather than
>> always disabled on AArch64, since the original issue was only present on
>> AArch64 systems configured with 64K pages.
>>
>> Added a new "vm.pageSize" jtreg property that can be used in @requires.
>>
>> stack018.java intermittently times out with the increased -Xss448K so
>> I've lowered this to -Xss220k and added @requires vm.pageSize ==
>> 4096 (the original value -Xss200k fails with "Maximal recursion depth:
>> 0" on AArch64 fastdebug build).
>>
>> [1] https://mail.openjdk.java.net/pipermail/hotspot-runtime-dev/2020-August/041299.html
>>
>> --
>> Thanks,
>> Nick