#include "v3_guest_mem.h"
-# Warning FIX THE PARSER TO CONFORM TO NEW /proc/v3 VM output format
-
-#define GUEST_FILE "/proc/v3vee/v3-guests"
-//#define GUEST_FILE "/441/pdinda/test.proc"
+#define GUEST_FILE "/proc/v3vee/v3-guests-details"
+//#define GUEST_FILE "/v-test/numa/palacios-devel/test.proc"
#define MAXLINE 65536
struct v3_guest_mem_map * v3_guest_mem_get_map(char *vmdev)
{
FILE *f;
+ int rc;
+ int i;
char buf[MAXLINE];
- char name[MAXLINE];
char dev[MAXLINE];
- char state[MAXLINE];
- uint64_t start, end;
+ uint64_t start, end, num;
+ uint64_t guest_cur;
+ uint64_t num_regions;
if (!(f=fopen(GUEST_FILE,"r"))) {
- fprintf(stderr,"Cannot open %s - is Palacios active?\n",GUEST_FILE);
- return 0;
- }
-
- // This is using the current "single memory region" model
- // and will change when /proc convention changes to conform to
- // multiple region model
- while (fgets(buf,MAXLINE,f)) {
- if (sscanf(buf,
- "%s %s %s [0x%llx-0x%llx]",
- name,
- dev,
- state,
- &start,
- &end)!=5) {
- fprintf(stderr, "Cannot parse following line\n%s\n",buf);
- fclose(f);
+ fprintf(stderr,"Cannot open %s - is Palacios active?\n",GUEST_FILE);
return 0;
- }
- if (!strcmp(dev,vmdev)) {
- struct v3_guest_mem_map *m =
- (struct v3_guest_mem_map *) malloc(sizeof(struct v3_guest_mem_map)+1*sizeof(struct v3_guest_mem_block));
- if (!m) {
- fprintf(stderr, "Cannot allocate space\n");
- fclose(f);
- return 0;
- }
+ }
- memset(m,0,sizeof(struct v3_guest_mem_map)+1*sizeof(struct v3_guest_mem_block));
-
- m->numblocks=1;
- m->block[0].gpa=0;
- m->block[0].hpa=(void*)start;
- m->block[0].numpages = (end-start+1) / 4096;
+ while (1) {
+ if (!fgets(buf,MAXLINE,f)) {
+ fprintf(stderr,"Could not find info for %s\n",vmdev);
+ return 0;
+ }
+ if (sscanf(buf,"Device: %s",dev)==1) {
+ if (!strcmp(dev,vmdev)) {
+ // found our VM
+ break;
+ }
+ }
+ }
+
+ // Now we need the number of regions
+ while (1) {
+ if (!fgets(buf,MAXLINE,f)) {
+ fprintf(stderr,"Could not find number of regions for %s\n",vmdev);
+ return 0;
+ }
+ if (sscanf(buf,"Regions: %llu",&num_regions)==1) {
+ break;
+ }
+ }
+
+ struct v3_guest_mem_map *m =
+ (struct v3_guest_mem_map *) malloc(sizeof(struct v3_guest_mem_map)+num_regions*sizeof(struct v3_guest_mem_block));
+ if (!m) {
+ fprintf(stderr, "Cannot allocate space\n");
fclose(f);
- return m;
- }
+ return 0;
}
- fprintf(stderr,"%s not found\n",vmdev);
+ memset(m,0,sizeof(struct v3_guest_mem_map)+num_regions*sizeof(struct v3_guest_mem_block));
+
+ m->numblocks=num_regions;
+
+ // Now collect the region info
+ guest_cur=0;
+ i=0;
+ while (i<num_regions) {
+ if (!fgets(buf,MAXLINE,f)) {
+ fprintf(stderr,"Did not find all regions...\n");
+ free(m);
+ return 0;
+ }
+ if (sscanf(buf," region %d has HPAs %llx-%llx",&num,&start,&end)==3) {
+ m->block[i].gpa = (void*)guest_cur;
+ m->block[i].hpa = (void*)start;
+ m->block[i].numpages = (end-start) / 4096 + !!((end-start) % 4096);
+ if ((end-start)%4096) {
+ fprintf(stderr,"Odd, region %d is a non-integral number of pages",i);
+ }
+ guest_cur+=end-start;
+ m->block[i].cumgpa=(void*)(guest_cur-1);
+ i++;
+ }
+ }
+
fclose(f);
- return 0;
+
+ return m;
}
}
for (i=0; i<map->numblocks; i++) {
- fprintf(stderr,"Mapping %llu bytes of /dev/mem offset 0x%llx\n",
- map->block[i].numpages*4096, (off_t)(map->block[i].hpa));
+ //fprintf(stderr,"Mapping %llu bytes of /dev/mem offset 0x%llx\n",
+ // map->block[i].numpages*4096, (off_t)(map->block[i].hpa));
map->block[i].uva = mmap(NULL,
map->block[i].numpages*4096,
PROT_READ | PROT_WRITE,
}
return 0;
}
+
+
+void *v3_gpa_start(struct v3_guest_mem_map *map)
+{
+ return 0; // all guests start at zero for now
+}
+
+void *v3_gpa_end(struct v3_guest_mem_map *map)
+{
+ struct v3_guest_mem_block *l = &(map->block[map->numblocks-1]);
+
+ // currently, the regions are consecutive, so we just need the last block
+ return l->gpa+l->numpages*4096-1;
+}
+
+
+int v3_guest_mem_apply(void (*func)(void *data, uint64_t num_bytes, void *priv),
+ struct v3_guest_mem_map *map, void *gpa, uint64_t num_bytes, void *priv)
+{
+ void *cur_gpa;
+ void *cur_uva;
+ uint64_t left_bytes;
+ uint64_t block_bytes;
+
+ if (!(map->fd)) {
+ return -1;
+ }
+
+ if (gpa < v3_gpa_start(map) || gpa+num_bytes-1 > v3_gpa_end(map)) {
+ return -1;
+ }
+
+ cur_gpa = gpa;
+ left_bytes = num_bytes;
+
+ while (left_bytes) {
+ cur_uva = v3_gpa_to_uva(map, cur_gpa, &block_bytes);
+ if (!cur_uva) {
+ return -1;
+ }
+ if (block_bytes>left_bytes) {
+ block_bytes = left_bytes;
+ }
+ func(cur_uva,block_bytes,priv);
+ left_bytes-=block_bytes;
+ cur_gpa+=block_bytes;
+ }
+
+ return 0;
+}
+
+
+
+static void copy_out(void *uva, uint64_t num_bytes, void *curoff)
+{
+ memcpy(*((void**)(curoff)), uva, num_bytes);
+ *(void**)curoff += num_bytes;
+}
+
+static void copy_in(void *uva, uint64_t num_bytes, void *curoff)
+{
+ memcpy(uva, *((void**)(curoff)), num_bytes);
+ *(void**)curoff += num_bytes;
+}
+
+static void do_hash(void *uva, uint64_t num_bytes, void *priv)
+{
+ uint64_t i;
+ uint64_t *curhash = (uint64_t *)priv;
+
+ for (i=0;i<num_bytes;i++) {
+ *curhash += ((uint8_t*)uva)[i];
+ }
+}
+
+int v3_guest_mem_read(struct v3_guest_mem_map *map, void *gpa, uint64_t num_bytes, char *data)
+{
+ void *cpy_ptr=data;
+
+ return v3_guest_mem_apply(copy_out,map,gpa,num_bytes,&cpy_ptr);
+}
+
+int v3_guest_mem_write(struct v3_guest_mem_map *map, void *gpa, uint64_t num_bytes, char *data)
+{
+ void *cpy_ptr=data;
+
+ return v3_guest_mem_apply(copy_in,map,gpa,num_bytes,&cpy_ptr);
+}
+
+int v3_guest_mem_hash(struct v3_guest_mem_map *map, void *gpa, uint64_t num_bytes, uint64_t *hash)
+{
+ *hash = 0;
+
+ 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;
+}
+
+
+
