| commit | d97c05d2301799ed585620a9c5c739d36e7b5d3d | [log] [tgz] |
|---|---|---|
| author | Adrian Danis <adanis@google.com> | Mon Jan 03 23:44:30 2022 +0000 |
| committer | Commit Bot <commit-bot@chromium.org> | Mon Jan 03 23:44:30 2022 +0000 |
| tree | c66b2f6788b8dc7444a28dd44354ef0c2f13db91 | |
| parent | 3e79f6c82dcf4921726f18d9f380715284843407 [diff] |
[kernel][vm] Optimize protect ranges Optimizes the protection of ranges by taking into account the previous arch mmu flags for each range being modified. Knowing the previous flags lets us skip manipulating the arch aspace in some circumstances where we know it would be redundant. In particular, without knowing the previous permissions if the new permissions had WRITE, we would have to protect to the new permissions minus WRITE, even if the new permissions were the same as the old ones. Now this scenario can be identified and skipped. Bug: 90014 Change-Id: I9d2bd3993eecb64cadb5bdcb0cb308fa8a9ea1c3 Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/622424 Reviewed-by: Rasha Eqbal <rashaeqbal@google.com> Commit-Queue: Adrian Danis <adanis@google.com>
Fuchsia is an open source, general purpose operating system supporting modern 64-bit Intel and ARM processors.
We expect everyone interacting with our project to respect our code of conduct.
Read more about Fuchsia's principles.
See Getting Started.
See fuchsia.dev.