Give RS a page table.

kernel/kernel.h

@@ -49,6 +49,7 @@
 #include "glo.h"		/* global variables */
 #include "ipc.h"		/* IPC constants */
 #include "profile.h"		/* system profiling */
+#include "perf.h"		/* performance-related definitions */
 #include "debug.h"		/* debugging, MUST be last kernel header */
 
 #endif /* __ASSEMBLY__ */

kernel/system/do_safecopy.c

@@ -23,8 +23,6 @@
 
 #define MEM_TOP 0xFFFFFFFFUL
 
-#define USE_COW_SAFECOPY 0
-
 FORWARD _PROTOTYPE(int safecopy, (struct proc *, endpoint_t, endpoint_t,
 		cp_grant_id_t, int, int, size_t, vir_bytes, vir_bytes, int));
 
@@ -240,7 +238,7 @@ int access;			/* CPF_READ for a copy from granter to grantee, CPF_WRITE
 	endpoint_t new_granter, *src, *dst;
 	struct proc *granter_p;
 	int r;
-#if USE_COW_SAFECOPY
+#if PERF_USE_COW_SAFECOPY
 	vir_bytes size;
 #endif
 
@@ -290,7 +288,7 @@ int access;			/* CPF_READ for a copy from granter to grantee, CPF_WRITE
 	}
 
 	/* Do the regular copy. */
-#if USE_COW_SAFECOPY
+#if PERF_USE_COW_SAFECOPY
 	if(v_offset % CLICK_SIZE != addr % CLICK_SIZE || bytes < CLICK_SIZE) {
 		/* Give up on COW immediately when offsets are not aligned
 		 * or we are copying less than a page.

kernel/table.c

@@ -46,7 +46,11 @@
 PUBLIC char *t_stack[TOT_STACK_SPACE / sizeof(char *)];
 
 /* Define boot process flags. */
-#define BVM_F    (PROC_FULLVM)                    /* boot processes with VM */
+#define BVM_F   (PROC_FULLVM)                    /* boot processes with VM */
+#define OVM_F   (PERF_SYS_CORE_FULLVM ? PROC_FULLVM : 0) /* critical boot
+                                                           * processes with
+                                                           * optional VM.
+                                                           */
 
 /* The system image table lists all programs that are part of the boot image. 
  * The order of the entries here MUST agree with the order of the programs
@@ -74,9 +78,9 @@ PUBLIC struct boot_image image[] = {
 {DS_PROC_NR,   BVM_F, 50,      4, 0,     "ds"    },
 {RS_PROC_NR,       0, 50,      4, 0,     "rs"    },
 
-{PM_PROC_NR,       0,500,      4, 0,     "pm"    },
-{SCHED_PROC_NR,    0,500,      4, 0,     "sched" },
-{VFS_PROC_NR,      0,500,      5, 0,     "vfs"   },
+{PM_PROC_NR,   OVM_F,500,      4, 0,     "pm"    },
+{SCHED_PROC_NR,OVM_F,500,      4, 0,     "sched" },
+{VFS_PROC_NR,  OVM_F,500,      5, 0,     "vfs"   },
 {MEM_PROC_NR,  BVM_F, 50,      3, 0,     "memory"},
 {LOG_PROC_NR,  BVM_F, 50,      2, 0,     "log"   },
 {TTY_PROC_NR,  BVM_F, 50,      1, 0,     "tty"   },