soc: wch: work-around a bug in wfi in the QingKe V2A
#88548
Closed
Conversation
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
|
This pull request has been marked as stale because it has been open (more than) 60 days with no activity. Remove the stale label or add a comment saying that you would like to have the label removed otherwise this pull request will automatically be closed in 14 days. Note, that you can always re-open a closed pull request at any time. |
The RISC-V Machine-Level ISA section 3.3.3 says that `wfi` will complete even if interrupts are masked, but the QingKe V2A does not do this. Work-around by enabling interrupts first. This is the same mitigation as used for the Nordic VPR. Signed-off-by: Michael Hope <[email protected]>
|
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
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Outdated suggestions cannot be applied.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.
The RISC-V Machine-Level ISA section 3.3.3 says that
wfiwill complete even if interrupts are masked, but the QingKe V2A does not do this. Work-around by enabling interrupts first.This is the same mitigation as used for the Nordic VPR.
Fixes #88449