[roll] Roll fuchsia [kernel][restricted][arm64] tweak how much arm32 state is restored

Trim back the number of registers loaded/stored from the larger arm64
state structure when transitioning between restricted and normal mode.
This was already done for half of the transition but consistently do it
for both sides.

No actual functional change since previously state was being loaded into
the high, unused half of the arm64 register state that should be
invisible to the cpu in arm32 state, but be precise in case of some
future hardware issue.

Also leads the way towards perhaps using a more compact arm32 state
structure.

Extra:
Comment the arm iframe_t a bit more.

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1440597
Original-Revision: a8f895009a5d7863dfd33b6be0c62419f40b676e
GitOrigin-RevId: 6cd3a42b941b81eabbf8889cfe556502852fd110
Change-Id: I6550e720d0c52f0407b3a678d3826c057c5baafa
1 file changed
tree: a6782d94b9d538586bb2b6450d06d50ac8469f07
  1. ctf/
  2. git-hooks/
  3. infra/
  4. third_party/
  5. flower
  6. jiri.lock
  7. MILESTONE
  8. minimal
  9. prebuilts
  10. README.md
  11. stem
  12. test_durations
README.md

Integration

This repository contains Fuchsia's Global Integration manifest files.

Making changes

All changes should be made to the internal version of this repository. Our infrastructure automatically updates this version when the internal one changes.

Currently all changes must be made by a Google employee. Non-Google employees wishing to make a change can ask for assistance in one of the communication channels documented at get involved.

Obtaining the source

First install Jiri.

Next run:

$ jiri init
$ jiri import minimal https://fuchsia.googlesource.com/integration
$ jiri update

Third party

Third party projects should have their own subdirectory in ./third_party.