[FMV][AArch64] Remove features which expose non exploitable runtime behavior. #178
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
…ehavior. Feature dit provides independent timing for data processing instructions according to the value CPSR.DIT of the Current Program Status Register. The runtime detection in FMV does not examine the content of control registers, therefore such features are not suitable for runtime dispatch since they cannot be exploited in a meaningful way. See the ACLE patch for more info: ARM-software/acle#355 Depends on llvm/llvm-project#114387
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Outdated suggestions cannot be applied.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.
Feature dit provides independent timing for data processing instructions according to the value CPSR.DIT of the Current Program Status Register.
The runtime detection in FMV does not examine the content of control registers, therefore such features are not suitable for runtime dispatch since they cannot be exploited in a meaningful way. See the ACLE patch for more info: ARM-software/acle#355
Depends on llvm/llvm-project#114387