Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

HFENCE.GVMA over-invalidates TLB V=0 entries #2954

Merged
merged 1 commit into from
Mar 29, 2022
Merged

HFENCE.GVMA over-invalidates TLB V=0 entries #2954

merged 1 commit into from
Mar 29, 2022

Conversation

ingallsj
Copy link
Contributor

Related issue:

Type of change: other enhancement

Impact: no functional change

Development Phase: implementation

Release Notes
HFENCE.GVMA sfence.bits.hg=1, hv=0 should target all and only TLB entries with V=1, not V=0.
It is functionally safe to over-invalidate TLB entries, so not marking this as a “Bug” per se, but it was not the design intent.

@ingallsj ingallsj requested a review from aswaterman March 29, 2022 13:17
@ingallsj ingallsj merged commit 286df3f into master Mar 29, 2022
@ingallsj ingallsj deleted the hfence-gvma branch March 29, 2022 19:33
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

Successfully merging this pull request may close these issues.

2 participants