[issue44381] Allow enabling control flow guard in Windows build

Steve Dower added the comment: That looks to me like no impact at all, which is great to see! -- ___ Python tracker ___ ___

[issue44381] Allow enabling control flow guard in Windows build

neonene added the comment: I'd like to leave my pyperformance (x64) results here. cpython: ae5259171b8ef62165e061b9dea7ad645a5131a2 (2021-8-23) 1) release + CFG : 1.00x 2) release + CFG,/Ob3 : 1.05x faster | 41 faster | 9 slower

[issue44381] Allow enabling control flow guard in Windows build

Change by Steve Dower : -- resolution: -> fixed stage: patch review -> resolved status: open -> closed ___ Python tracker ___ ___

[issue44381] Allow enabling control flow guard in Windows build

miss-islington added the comment: New changeset 42612db10792dd069149063f67a3b1db700bc7ee by Miss Islington (bot) in branch '3.10': bpo-44381: Windows build now allows enabling control flow guard (GH-26645) https://github.com/python/cpython/commit/42612db10792dd069149063f67a3b1db700bc7ee

[issue44381] Allow enabling control flow guard in Windows build

Steve Dower added the comment: New changeset 9580d3894ad158ae909e7573a02dcd087de0b673 by Miss Islington (bot) in branch '3.9': bpo-44381: Windows build now allows enabling control flow guard (GH-26645) https://github.com/python/cpython/commit/9580d3894ad158ae909e7573a02dcd087de0b673

[issue44381] Allow enabling control flow guard in Windows build

Change by miss-islington : -- pull_requests: +25269 pull_request: https://github.com/python/cpython/pull/26682 ___ Python tracker ___

[issue44381] Allow enabling control flow guard in Windows build

Change by miss-islington : -- nosy: +miss-islington nosy_count: 4.0 -> 5.0 pull_requests: +25268 pull_request: https://github.com/python/cpython/pull/26681 ___ Python tracker

[issue44381] Allow enabling control flow guard in Windows build

Steve Dower added the comment: New changeset 5af56c6f2a0d11df37fed7ecaaf321cf6926ba13 by Steve Dower in branch 'main': bpo-44381: Windows build now allows enabling control flow guard (GH-26645) https://github.com/python/cpython/commit/5af56c6f2a0d11df37fed7ecaaf321cf6926ba13 --

[issue44381] Allow enabling control flow guard in Windows build

Steve Dower added the comment: FWIW, I don't actually know what the performance impact is. I'm not set up for running the perf benchmarks, and I don't know if anyone else is (on Windows), but if someone would like to then it'll be easier once the environment option to enable it is in there.

[issue44381] Allow enabling control flow guard in Windows build

Change by Steve Dower : -- keywords: +patch pull_requests: +25231 stage: -> patch review pull_request: https://github.com/python/cpython/pull/26645 ___ Python tracker ___

[issue44381] Allow enabling control flow guard in Windows build

New submission from Steve Dower : Currently we don't enable CFG (which is runtime protection against code injection into tables), because it likely has a performance impact and the kind of attack is outside our scope. However, we should make it easier to build CPython with CFG enabled, so