| commit | 869368ea65171fa917819f7224037028abb92bf6 | [log] [tgz] |
|---|---|---|
| author | Adrian Danis <adanis@fuchsia.infra.roller.google.com> | Mon Jan 03 23:45:49 2022 +0000 |
| committer | Copybara-Service <copybara-worker@google.com> | Mon Jan 03 15:47:15 2022 -0800 |
| tree | c6a67e37fdeefcb7a79328d0e19bcba15cd2182a | |
| parent | 3a7c32faf7aedb27c41febbd589605ab7428f417 [diff] |
[roll] Roll fuchsia [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. Original-Bug: 90014 Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/622424 Original-Revision: d97c05d2301799ed585620a9c5c739d36e7b5d3d GitOrigin-RevId: c0f8c7ef78a16ee7b5226d7cdb61fbb6e0d9fda0 Change-Id: I4c9021c91269e8e73a9accbf9ad0532ddfb03a5f
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