CVS commit: src/sys/dev/hil

["Izumi Tsutsui" <tsutsui%netbsd.org@localhost>]

Module Name:    src
Committed By:   tsutsui
Date:           Mon May  6 13:27:50 UTC 2024

Modified Files:
        src/sys/dev/hil: hil.c

Log Message:
Fix "stray level 1 interrupt" panic by pressing keys during autoconf(9).

Also explicitly initialize sc->sc_status = HIL_STATUS_BUSY in hil_attach().

Previously hil_intr(9) returned immediately during 'cold', but
all interrupts are enabled at the end of configure() (actually
in MD cpu_configure()) and cold is cleared in confiugre2()
after configure(), so there is a small window when hil interrupts
can be triggered during cold.

It looks there is no problem to process hil_intr() before
hil_attach_deferre() is called via configure2() because
we already check 'sc->sc_status != HIL_STATUS_BUSY' on
processing a kthread.

Note this seems also to appease the similar panic on mame's hp9k370
emulation (though mame's emulation around DMAC looks still incomplete).

Should be pulled up to netbsd-10 and netbsd-9.


To generate a diff of this commit:
cvs rdiff -u -r1.7 -r1.8 src/sys/dev/hil/hil.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.