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gh-159860: Adjust QSBR cache line size from 64 to 128 on AArch64 - #159862

Merged

corona10 merged 5 commits into

python:mainfrom

gr4ph0s:gh-159860-qsbr-128

Oct 20, 2026

Merged

gh-159860: Adjust QSBR cache line size from 64 to 128 on AArch64#159862
corona10 merged 5 commits into
python:mainfrom
gr4ph0s:gh-159860-qsbr-128

Commits on Oct 20, 2026
- gh-159860: Add NEWS entry
  gr4ph0s
  authored
  aada9bf
- gh-159860: Pad QSBR thread states to 128 bytes on AArch64
  
  gr4ph0s
  and
  claude
  authored
  4ab0962
- gh-159860: Size _PyThreadStateImpl tail padding with _Py_QSBR_CACHE_LINE_SIZE
  gr4ph0s
  authored
  826ddbf
- gh-159860: Align the QSBR array to _Py_QSBR_CACHE_LINE_SIZE
  gr4ph0s
  authored
  66d078a
- Apply suggestion from @corona10
  corona10
  authored
  44ec405