d91f339823
blocks on a pmap lock, pmap_release() might proceed in parallel and destroy the pmap mutex, since unlocked pv lock allows to remove pv entry owned by the pmap. For now, gate the pmap_release() on write-locked pvh_global_lock. Since pmap_ts_release() does not unlock the global lock, pmap_release() would not destroy pmap mutex until the pmap_ts_referenced() finished. We cannot enter pmap_ts_referenced() and encounter a pv entry for the destroyed pmap if pmap_release() passed the global lock gate, since pmap_remove_pages() would finish earlier. Reported by: jeff, pho Reviewed by: alc Tested by: pho Sponsored by: The FreeBSD Foundation |
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| linux32 | ||
| pci | ||
| vmm | ||
| Makefile | ||