aarch64 cache idnestcnt - #968
Merged
Kalamatee merged 2 commits intoAug 9, 2026
Merged
Conversation
A pure invalidate works on whole cache lines, so a range that neither starts nor ends on a line boundary discarded dirty bytes belonging to whoever shares its head and tail lines. Promote those two lines to clean+invalidate, as the arm implementation already does.
core_Switch saved tc_IDNestCnt only for tasks leaving in TS_RUN, but Wait() switches away in TS_WAIT holding a Disable() level, so one level leaked per blocking wait. The signed byte eventually wrapped positive and the task was then dispatched with interrupts masked for good. The arm and x86_64 schedulers already save it unconditionally.
Kalamatee
approved these changes
Aug 9, 2026
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
aarch64 fixes, aligns with the arm32 port