[dev][ahci] use bti

This is a re-landed version of I76e114b9ea6123e7ef5fec390a7ef285e86cfd1e
(git commit 5d95f3a3404088560fff7dfa4ec53abd49877afc) which was reverted
in 335c3a414e169804eb9050d784af6cebd0f5c77f.  The original patch passed
the wrong size to bti_pin, causing it to fail for non-page-aligned VMO
offsets.  This has been tested on Acer12 and Paradise.

Change-Id: I45d74641b68debbf83eff95e209fefb13a045388
2 files changed
tree: 9aab8c5b8e1f7fd7a2ed76c539d519be8657616b
  1. bootloader/
  2. docs/
  3. kernel/
  4. make/
  5. manifest/
  6. prebuilt/
  7. public/
  8. scripts/
  9. system/
  10. third_party/
  11. .clang-format
  12. .clang-tidy
  13. .dir-locals.el
  14. .gitignore
  15. .travis.yml
  16. AUTHORS
  17. LICENSE
  18. makefile
  19. navbar.md
  20. PATENTS
  21. README.md
README.md

Zircon

Zircon is the core platform that powers the Fuchsia OS. Zircon is composed of a microkernel (source in kernel/...) as well as a small set of userspace services, drivers, and libraries (source in system/...) necessary for the system to boot, talk to hardware, load userspace processes and run them, etc. Fuchsia builds a much larger OS on top of this foundation.

The canonical Zircon Git repository is located at: https://fuchsia.googlesource.com/zircon

A read-only mirror of the code is present at: https://github.com/fuchsia-mirror/zircon

The Zircon Kernel provides syscalls to manage processes, threads, virtual memory, inter-process communication, waiting on object state changes, and locking (via futexes).

Currently there are some temporary syscalls that have been used for early bringup work, which will be going away in the future as the long term syscall API/ABI surface is finalized. The expectation is that there will be about 100 syscalls.

Zircon syscalls are generally non-blocking. The wait_one, wait_many port_wait and thread sleep being the notable exceptions.

This page is a non-comprehensive index of the zircon documentation.