diff options
| author | Mark Kettenis <kettenis@cvs.openbsd.org> | 2022-02-13 15:54:08 +0000 |
|---|---|---|
| committer | Mark Kettenis <kettenis@cvs.openbsd.org> | 2022-02-13 15:54:08 +0000 |
| commit | bc1c9feb431ab3d9824bd24c759278b556f473c5 (patch) | |
| tree | 3eebd0ce8df1e11ac1209d6cc4711492a13c4a75 /usr.bin | |
| parent | 57f6eed417d1c985b515fbbdaa9ad5097a723b9c (diff) | |
The Apple M1 SoC has two mechanism for doing IPIs. The first method uses
the interrupt controller, the second method used implementation-specific
CPU registers. The M1 Pro/Max SoCs use a modified interrupt controller
that no longer provides the first method. So switch to the second method
in preparation for adding M1 Pro/Max support to OpenBSD. As a bonus this
mechanism seems to be faster (which may be why Apple calls these "fast"
IPIs).
ok patrick@
Diffstat (limited to 'usr.bin')
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