PERFORCE change 93436 for review

[Kip Macy]

http://perforce.freebsd.org/chv.cgi?CH=93436

Change 93436 by kmacy at kmacy_storage:sun4v_work on 2006/03/17 06:04:41

	optimize tsb_clear_range use in pmap_invalidate_range
	enable small mallocs from direct memory
	reference pcpu structures through direct mappings

Affected files ...

.. //depot/projects/kmacy_sun4v/src/sys/sun4v/include/vmparam.h#3 edit
.. //depot/projects/kmacy_sun4v/src/sys/sun4v/sun4v/machdep.c#12 edit
.. //depot/projects/kmacy_sun4v/src/sys/sun4v/sun4v/pmap.c#30 edit

Differences ...

==== //depot/projects/kmacy_sun4v/src/sys/sun4v/include/vmparam.h#3 (text+ko) ====

@@ -145,7 +145,7 @@
 #define	VM_MIN_PROM_ADDRESS	(0x00000000f0000000UL)
 #define	VM_MAX_PROM_ADDRESS	(0x00000000ffffe000UL)
 
-#define	VM_MIN_USER_ADDRESS	(0x0000000000000000UL)
+#define	VM_MIN_USER_ADDRESS	(0x0000000000002000UL)
 #define	VM_MAX_USER_ADDRESS	(0x000007fe00000000UL)
 
 #define	VM_MINUSER_ADDRESS	(VM_MIN_USER_ADDRESS)
@@ -176,10 +176,7 @@
 #ifndef	VM_INITIAL_PAGEIN
 #define	VM_INITIAL_PAGEIN	16
 #endif
-#if 0
-/* does silly things */
 #define	UMA_MD_SMALL_ALLOC
-#endif
 extern vm_offset_t vm_max_kernel_address;
 
 #endif /* !_MACHINE_VMPARAM_H_ */

==== //depot/projects/kmacy_sun4v/src/sys/sun4v/sun4v/machdep.c#12 (text+ko) ====

@@ -404,7 +404,13 @@
 	    (thread0.td_kstack + KSTACK_PAGES * PAGE_SIZE) - 1;
 	pc->pc_curpcb = thread0.td_pcb;
 
-
+	/*
+	 * Update PCPU_REG to point to direct address
+	 * to support easy phys <-> virt translation in trap handler
+	 */
+	pc = (struct pcpu *)TLB_PHYS_TO_DIRECT(vtophys(pc));
+	cpu_setregs(pc);
+	
 	/*
 	 * Initialize tunables.
 	 */

==== //depot/projects/kmacy_sun4v/src/sys/sun4v/sun4v/pmap.c#30 (text+ko) ====

@@ -139,6 +139,7 @@
  * invalidate more than this 
  */
 #define MAX_INVALIDATES   32
+#define MAX_TSB_CLEARS   128
 
 /*
  * Allocate physical memory for use in pmap_bootstrap.
@@ -1068,7 +1069,11 @@
 		DPRINTF("pmap_invalidate_range(sva=%lx, eva=%lx)\n", sva, eva);
 	/* XXX SUN4V_FIXME - oversimplified logic */
 
-	tsb_clear_range(&pmap->pm_tsb, sva, eva);
+	if ((((eva - sva) >> PAGE_SHIFT) <  MAX_TSB_CLEARS) ||
+	    (pmap->pm_context == 0)) 
+		tsb_clear_range(&pmap->pm_tsb, sva, eva);
+	else
+		tsb_clear(&pmap->pm_tsb);
 
 
 	if ((((eva - sva) >> PAGE_SHIFT) <  MAX_INVALIDATES)) {