Integrated: 8371948: TestStackOverflowDuringInit.java fails xss too small on linux-aarch64

[SendaoYan]

On Mon, 17 Nov 2025 14:31:46 GMT, SendaoYan <syan at openjdk.org> wrote:

> Hi all,
> 
> On linux-aarch64, when page size is 64K, the minimal java thread stack size is 448K. So this PR increase the minimal java thread stack size in test/hotspot/jtreg/runtime/ClassInitErrors/TestStackOverflowDuringInit.java. Below is the calculation formula for the minimal java thread stack size:
> 
> 
> page_size = 64K
> _java_thread_min_stack_allowed = 72K
> _stack_red_zone_size = align_up(StackRedPages * unit, page_size) = align_up(1*4K, 64K) = 64K
> _stack_yellow_zone_size = align_up(StackYellowPages * unit, page_size) = align_up(2*4K, 64K) = 64K
> _stack_reserved_zone_size = align_up(StackReservedPages * unit, page_size) = align_up(1*4K, 64K) = 64K
> _stack_shadow_zone_size = align_up(StackShadowPages * unit, page_size) = align_up(25*4K, 64K) = 128K
> _java_thread_min_stack_allowed = align_up(72K+64K+64K+64K+128K, 64K) = 448K
> 
> 
> This PR add whitebox API getMinimumJavaStackSize() to the the allowd minimum java stack size, and get the allowed minimum java stack size in test/hotspot/jtreg/runtime/ClassInitErrors/TestStackOverflowDuringInit.java
> 
> Change has been verified locally both on linux-x64 and linux-aarch64.

This pull request has now been integrated.

Changeset: 360777c3
Author:    SendaoYan <syan at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/360777c3ad8fe5bfeb2af15ce1b89e04d4397b9f
Stats:     64 lines in 5 files changed: 36 ins; 2 del; 26 mod

8371948: TestStackOverflowDuringInit.java fails xss too small on linux-aarch64

Reviewed-by: dholmes, aph

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PR: https://git.openjdk.org/jdk/pull/28352