CVSROOT: /cvs
Module name: src
Changes by: [email protected] 2023/08/22 11:13:22
Modified files:
sys/arch/i386/isa: clock.c
Log message:
i386: i8254_initclocks: set IPL_MPSAFE for clock/rtc IRQs
Setting IPL_MPSAFE for the i8254/mc146818 IRQs appeases a KASSERT in
apic_intr_establish() and allows the system to boot via the i8254
path. This makes testing changes to the i8254/mc146818 code much
easier on modern hardware without mucking with the GENERIC config. We
already set IPL_MPSAFE for these IRQs in the equivalent amd64 code.
Now, setting IPL_MPSAFE is a lie: the i8254 and mc146818 IRQs are not
MP-safe. However, the lie is harmless because we only reach
i8254_initclocks() if (a) there is no APIC at all, or (b) we fail to
calibrate the local APIC timer.
Thread: https://marc.info/?l=openbsd-tech&m=169258915227321&w=2
ok mlarkin@
