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bpo-46968: Query altstack size dynamically on Linux kernel >=5.14 #31789

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Merged
vstinner merged 3 commits into from
Mar 11, 2022
Merged

bpo-46968: Query altstack size dynamically on Linux kernel >=5.14 #31789

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3a32f59
Added check for linux/auxvec.h in configure
oleksandr-pavlyk Mar 10, 2022
29f783e
Query altstack size dynamically on Linux kernel >=5.14
oleksandr-pavlyk Mar 8, 2022
2a2cbd6
📜🤖 Added by blurb_it.
blurb-it[bot] Mar 10, 2022
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📜🤖 Added by blurb_it.
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blurb-it[bot] authored and oleksandr-pavlyk committed Mar 11, 2022
commit 2a2cbd61e51096f173710b4f0c8166dcce1a0b0e
5 changes: 5 additions & 0 deletions Misc/NEWS.d/next/Library/2022-03-10-14-51-11.bpo-46968.ym2QxL.rst
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:mod:`faulthandler`: On Linux 5.14 and newer, dynamically determine size of
signal handler stack size CPython allocates using ``getauxval(AT_MINSIGSTKSZ)``.
This changes allows for Python extension's request to Linux kernel to use
AMX_TILE instruction set on Sapphire Rapids Xeon processor to succeed,
unblocking use of the ISA in frameworks.