diff options
| author | Scott Soule Cheloha <cheloha@cvs.openbsd.org> | 2023-08-22 17:13:23 +0000 |
|---|---|---|
| committer | Scott Soule Cheloha <cheloha@cvs.openbsd.org> | 2023-08-22 17:13:23 +0000 |
| commit | 83fa6d388c3eec5da9f344ef9571ca741627fe5c (patch) | |
| tree | a1ec4b082417c2b2bb610ed67809582129aa5ba3 /sys/arch/i386/include | |
| parent | b75843297678d490773a5796ee6bcc46ac9c1bda (diff) | |
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@
Diffstat (limited to 'sys/arch/i386/include')
0 files changed, 0 insertions, 0 deletions