enable user-mode access to CNTVCT timer register #6
Conversation
This file contains 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
CNTVCT: Virtual Count Register -- a 64-bit counter part of Virtual Memory System Architecture. Section B4.1.34 in ARM Architecture Reference Manual ARMv7-A/ARMv7-R FFTW library, for example, already has support for this cycle counter, so it would be nice to enable it from here. Tested both the existing PMU code and the new CNTVCT code on XU4. Signed-off-by: Alexei Colin <[email protected]>
|
ARMv7 |
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Outdated suggestions cannot be applied.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.
CNTVCT: Virtual Count Register -- a 64-bit counter part of Virtual Memory
System Architecture. Section B4.1.34 in ARM Architecture Reference Manual
ARMv7-A/ARMv7-R
FFTW library, for example, already has support for this cycle counter, so it
would be nice to enable it from here.
Tested both the existing PMU code and the new CNTVCT code on XU4.
Signed-off-by: Alexei Colin [email protected]