Hopefully fix a few problems that could cause hangs in SMP mode.

1)	Make sure that the region mapped by a 4MB page is
	properly aligned.
2)	Don't turn on the PG_G flag in locore for SMP.  I plan
	to do that later in startup anyway.
3)	Make sure the 2nd processor has PSE enabled, so that 4MB
	pages don't hose it.

We don't use PG_G yet on SMP -- there is work to be done to make that
work correctly.  It isn't that important anyway...

1 files changed, 5 insertions, 1 deletions

diff --git a/sys/kern/subr_smp.c b/sys/kern/subr_smp.c
index 157c218..7b74a36 100644
--- a/sys/kern/subr_smp.c
+++ b/sys/kern/subr_smp.c
@@ -22,7 +22,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: mp_machdep.c,v 1.14 1997/07/13 00:42:14 smp Exp smp $
+ *	$Id: mp_machdep.c,v 1.27 1997/07/13 01:22:43 fsmp Exp $
  */
 
 #include "opt_smp.h"
@@ -395,6 +395,8 @@ init_secondary(void)
 	load_cr0(0x8005003b);		/* XXX! */
 
 	PTD[0] = 0;
+	pmap_set_opt((unsigned *)PTD);
+
 	invltlb();
 }
 
@@ -1542,6 +1544,8 @@ start_all_aps(u_int boot_addr)
 	outb(CMOS_REG, BIOS_RESET);
 	outb(CMOS_DATA, mpbiosreason);
 
+	pmap_set_opt_bsp();
+
 	/* number of APs actually started */
 	return mp_ncpus - 1;
 }