return v3_guest_mem_apply(do_hash,map,gpa,num_bytes,hash);
}
+
+
+int v3_guest_mem_track_start(char *vmdev,
+ v3_mem_track_access_t access,
+ v3_mem_track_reset_t reset,
+ uint64_t period)
+{
+ struct v3_mem_track_cmd cmd;
+
+ cmd.request=V3_MEM_TRACK_START;
+ cmd.config.access_type=access;
+ cmd.config.reset_type=reset;
+ cmd.config.period=period;
+
+ return v3_vm_ioctl(vmdev,V3_VM_MEM_TRACK_CMD,&cmd);
+
+}
+
+int v3_guest_mem_track_stop(char *vmdev)
+{
+ struct v3_mem_track_cmd cmd;
+
+ cmd.request=V3_MEM_TRACK_STOP;
+
+ return v3_vm_ioctl(vmdev,V3_VM_MEM_TRACK_CMD,&cmd);
+
+}
+
+
+#define CEIL_DIV(x,y) (((x)/(y)) + !!((x)%(y)))
+
+static uint8_t *alloc_bitmap(uint64_t num_pages)
+{
+ uint8_t *b;
+
+ if (!(b = malloc(CEIL_DIV(num_pages,8)))) {
+ return NULL;
+ }
+
+ memset(b,0,CEIL_DIV(num_pages,8));
+
+ return b;
+}
+
+
+static void free_bitmap(uint8_t *b)
+{
+ if (b) {
+ free(b);
+ }
+
+}
+
+
+void v3_guest_mem_track_free_snapshot(v3_mem_track_snapshot *s)
+{
+ int i;
+
+ if (s) {
+ for (i=0;i<s->num_cores;i++) {
+ free_bitmap(s->core[i].access_bitmap);
+ }
+ free(s);
+ }
+}
+
+
+static v3_mem_track_snapshot *alloc_snapshot(uint64_t num_cores, uint64_t num_pages)
+{
+ int i;
+ v3_mem_track_snapshot *s;
+
+ s = malloc(sizeof(v3_mem_track_snapshot) + sizeof(struct v3_core_mem_track) * num_cores);
+
+ if (!s) {
+ return NULL;
+ }
+
+ memset(s,0,sizeof(v3_mem_track_snapshot) + sizeof(struct v3_core_mem_track) * num_cores);
+
+ s->num_cores=num_cores;
+
+ for (i=0;i<num_cores;i++) {
+ if (!(s->core[i].access_bitmap = alloc_bitmap(num_pages))) {
+ v3_guest_mem_track_free_snapshot(s);
+ return NULL;
+ }
+ s->core[i].num_pages=num_pages;
+ }
+
+ return s;
+}
+
+
+v3_mem_track_snapshot *v3_guest_mem_track_snapshot(char *vmdev)
+{
+ struct v3_mem_track_sizes size;
+ v3_mem_track_snapshot *s;
+ int rc;
+
+ rc = v3_vm_ioctl(vmdev,V3_VM_MEM_TRACK_SIZE,&size);
+
+ if (rc) {
+ return 0;
+ }
+
+ //printf("returned size num_cores=%u, num_pages=%llu",size.num_cores,size.num_pages);
+
+ // allocate a snapshot;
+ if (!(s=alloc_snapshot(size.num_cores,size.num_pages))) {
+ return 0;
+ }
+
+
+
+ if (v3_vm_ioctl(vmdev,V3_VM_MEM_TRACK_SNAP,s)) {
+ v3_guest_mem_track_free_snapshot(s);
+ return 0;
+ }
+
+ return s;
+}
+
+
+