svn commit: r206596 - user/jmallett/octeon/sys/mips/mips

[Juli Mallett]

Author: jmallett
Date: Wed Apr 14 07:29:25 2010
New Revision: 206596
URL: http://svn.freebsd.org/changeset/base/206596

Log:
  o) Remove some gratuitous cpu_barrier calls.
  o) Remove an XXX about invalidating half of the TLB entry only -- this turns
     out to not be a win.

Modified:
  user/jmallett/octeon/sys/mips/mips/tlb.c

Modified: user/jmallett/octeon/sys/mips/mips/tlb.c
==============================================================================
--- user/jmallett/octeon/sys/mips/mips/tlb.c	Wed Apr 14 07:07:43 2010	(r206595)
+++ user/jmallett/octeon/sys/mips/mips/tlb.c	Wed Apr 14 07:29:25 2010	(r206596)
@@ -51,7 +51,6 @@ tlb_probe(void)
 {
 	__asm __volatile ("tlbp" : : : "memory");
 	mips_cp0_sync();
-	mips_barrier();
 }
 
 static inline void
@@ -59,7 +58,6 @@ tlb_read(void)
 {
 	__asm __volatile ("tlbr" : : : "memory");
 	mips_cp0_sync();
-	mips_barrier();
 }
 
 static inline void
@@ -67,7 +65,6 @@ tlb_write_indexed(void)
 {
 	__asm __volatile ("tlbwi" : : : "memory");
 	mips_cp0_sync();
-	mips_barrier();
 }
 
 static inline void
@@ -75,17 +72,10 @@ tlb_write_random(void)
 {
 	__asm __volatile ("tlbwr" : : : "memory");
 	mips_cp0_sync();
-	mips_barrier();
 }
 
 static void tlb_invalidate_one(unsigned);
 
-/*
- * XXX
- * We invalidate the whole pair.  Would be nice to just
- * invalidate the single entry instead of forcing a reload
- * of the other one.
- */
 void
 tlb_invalidate_address(struct pmap *pmap, vm_offset_t va)
 {