int index = get_bitmap_index(msr);
uint_t major = index / 4;
uint_t minor = (index % 4) * 2;
- uchar_t val = 0;
- uchar_t mask = 0x3;
+ uint8_t val = 0;
+ uint8_t mask = 0x3;
uint8_t * bitmap = (uint8_t *)(vm->msr_map.arch_data);
- if (hook_reads) {
+ if (index == -1) {
+ PrintError("MSR (0x%x) out of bitmap range\n", msr);
+ return 0;
+ }
+
+ if (hook_reads != 0) {
val |= 0x1;
}
- if (hook_writes) {
+ if (hook_writes != 0) {
val |= 0x2;
}
int v3_init_svm_msr_map(struct v3_vm_info * vm) {
+ void *temp;
struct v3_msr_map * msr_map = &(vm->msr_map);
msr_map->update_map = update_map;
- msr_map->arch_data = V3_VAddr(V3_AllocPages(2));
- memset(msr_map->arch_data, 0, PAGE_SIZE_4KB * 2);
+ temp = V3_AllocPages(2);
+
+ if (!temp) {
+ PrintError("Cannot allocate msr bitmap\n");
+ return -1;
+ }
+
+ msr_map->arch_data = V3_VAddr(temp);
+
+ memset(msr_map->arch_data, 0xff, PAGE_SIZE_4KB * 2);
v3_refresh_msr_map(vm);