CVSROOT: /cvs
Module name: src
Changes by: v...@cvs.openbsd.org 2016/01/04 22:27:54
Modified files:
sys/arch/loongson/include: cpu.h
sys/arch/mips64/include: cache.h cpu.h
sys/arch/mips64/mips64: cache_loongson2.c cache_loongson3.c
cache_mips64r2.c cache_octeon.c
cache_r10k.c cache_r4k.c cache_r5k.c
cache_tfp.c pmap.c
sys/arch/octeon/include: cpu.h
sys/arch/sgi/localbus: tcc.c
Log message:
Some implementations of HitSyncDCache() call pmap_extract() for va->pa
conversion. Because pmap_extract() acquires the PTE mutex, a "locking
against myself" panic is triggered if the cache routine gets called in
a context where the mutex is already held.
In the pmap, all calls to HitSyncDCache() are for a whole page. Add a
new cache routine, HitSyncDCachePage(), which gets both the va and the
pa of a page. This removes the need of the va->pa conversion. The new
routine has the same signature as SyncDCachePage(), allowing reuse of
the same routine for cache implementations that do not need differences
between "Hit" and non-"Hit" routines.
With the diff, POWER Indigo2 R8000 boots multiuser again. Tested on sgi
GENERIC-IP27.MP and octeon GENERIC.MP, too.
Diff from miod@, ok kettenis@
