diff options
Diffstat (limited to 'sys/kern/kern_fork.c')
| -rw-r--r-- | sys/kern/kern_fork.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/sys/kern/kern_fork.c b/sys/kern/kern_fork.c index 33e961f..cb50acb 100644 --- a/sys/kern/kern_fork.c +++ b/sys/kern/kern_fork.c @@ -36,7 +36,7 @@ * SUCH DAMAGE. * * @(#)kern_fork.c 8.6 (Berkeley) 4/8/94 - * $Id: kern_fork.c,v 1.42 1997/05/29 04:52:04 peter Exp $ + * $Id: kern_fork.c,v 1.43 1997/06/16 00:29:30 dyson Exp $ */ #include "opt_ktrace.h" @@ -142,6 +142,19 @@ fork1(p1, flags, retval) if ((flags & (RFFDG|RFCFDG)) == (RFFDG|RFCFDG)) return (EINVAL); +#ifdef SMP + /* + * FATAL now, we cannot have the same PTD on both cpus, the PTD + * needs to move out of PTmap and be per-process, even for shared + * page table processes. Unfortunately, this means either removing + * PTD[] as a fixed virtual address, or move it to the per-cpu map + * area for SMP mode. Both cases require seperate management of + * the per-process-even-if-PTmap-is-shared PTD. + */ + if (flags & RFMEM) + return (EOPNOTSUPP); +#endif + /* * Here we don't create a new process, but we divorce * certain parts of a process from itself. |
