diff options
| author | marcel <marcel@FreeBSD.org> | 2011-06-23 16:21:43 +0000 |
|---|---|---|
| committer | marcel <marcel@FreeBSD.org> | 2011-06-23 16:21:43 +0000 |
| commit | 594e41652df1d0b6c71e43141f9f25d0dfca2a21 (patch) | |
| tree | 3a0f5a492d795bdba6c2507f33bafc3ed9d611ab /sys/ia64 | |
| parent | 6e30ce7ac2c9a84e443253ce8de8bbd54b0f0361 (diff) | |
| download | FreeBSD-src-594e41652df1d0b6c71e43141f9f25d0dfca2a21.zip FreeBSD-src-594e41652df1d0b6c71e43141f9f25d0dfca2a21.tar.gz | |
Unblock the outgoing thread after we performed pmap_switch() to
switch the region registers. pmap_switch() returns the pmap for
which the region register are currently programmed, which needs
to be re-programmed on the CPU the ougoing thread gets switched
in. This change does not noticibly change anything or fix known
bugs, but does give me a warm fuzzy feeling by being more
correct.
Diffstat (limited to 'sys/ia64')
| -rw-r--r-- | sys/ia64/ia64/machdep.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/ia64/ia64/machdep.c b/sys/ia64/ia64/machdep.c index f3105fc..185e13c 100644 --- a/sys/ia64/ia64/machdep.c +++ b/sys/ia64/ia64/machdep.c @@ -470,12 +470,12 @@ cpu_switch(struct thread *old, struct thread *new, struct mtx *mtx) if (PCPU_GET(fpcurthread) == old) old->td_frame->tf_special.psr |= IA64_PSR_DFH; if (!savectx(oldpcb)) { - atomic_store_rel_ptr(&old->td_lock, mtx); - newpcb = new->td_pcb; oldpcb->pcb_current_pmap = pmap_switch(newpcb->pcb_current_pmap); + atomic_store_rel_ptr(&old->td_lock, mtx); + #if defined(SCHED_ULE) && defined(SMP) while (atomic_load_acq_ptr(&new->td_lock) == &blocked_lock) cpu_spinwait(); |
