Diffusion FreeBSD src repository 2420f6aed9e3

Enable IPIs on CPU 0 on arm and arm64
2420f6aed9e3
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Description

Enable IPIs on CPU 0 on arm and arm64

Not all interrupt controllers enable IPIs by default as the Arm
GIC specs make it an implementation defined option. As at least two
hypervisors have also previously masked the IPIs on boot.

As we already enable these IPIs on the non-boot CPUs it is expected
this is a safe operation.

Differential Revision: https://reviews.freebsd.org/D26975

Details

Provenance

andrew

Authored on May 2 2021, 7:43 AM

Differential Revision

D26975: Enable IPIs on CPU 0 on arm and arm64

Parents

rGfe3822497726: Implement bus_map_resource on arm64

Branches

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Event Timeline

andrew committed rG2420f6aed9e3: Enable IPIs on CPU 0 on arm and arm64 (authored by andrew).May 2 2021, 7:43 AM

andrew added an edge: D26975: Enable IPIs on CPU 0 on arm and arm64.May 2 2021, 10:57 AM

andrew mentioned this in rG0ec205197b56: Also enable IPIs on 32-bit arm.May 3 2021, 11:34 AM

andrew mentioned this in rGfcfd3c7909ba: Enable IPIs on CPU 0 on arm and arm64.Jun 11 2021, 6:26 PM

andrew mentioned this in rG4b707591838d: Also enable IPIs on 32-bit arm.

Changes (1)

Path

Size

sys/

arm64/

mp_machdep.c

rG2420f6aed9e3

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sys/arm64/arm64/mp_machdep.c