CVSROOT: /cvs
Module name: src
Changes by: kette...@cvs.openbsd.org 2018/08/11 05:16:43
Modified files:
sys/arch/arm64/dev: agintc.c
Log message:
Fix a couple of bugs in the ITS support code:
- Don't dereference sc_prop if we're not handling an LPI. Fixes a crash
on qemu when emulating a GICv3 without ITS (and therefore no LPIs(.
- Use the true IPL when calculating the priority of an LPI. The old
code used a variable that still had the IPL_MPSAFE flag in it.
- Write to the right GITS_BASERn instead of ialways writing to GITS_BASER0.
- Flush the cache after initializing/modifying the in-memory tables. The
GICv3 on the SynQuacer isn't fully coherent and only supports the
"non-shareable" attribute for its in-memory tables. So we have to flush
the cache to the point of coherency to guarentee that the GIC sees our
changes to those tables. Throw in a full memory barrier for good measure.
Also add support for the SynQuacer pre-ITS.
ok jsg@, patrick@
