msr_val.lo = info->vm_regs.rax;
msr_val.hi = info->vm_regs.rdx;
- if (hook->write(info, msr_num, msr_val, hook->priv_data) == -1) {
- PrintError("Error in MSR hook Write\n");
- return -1;
+ if (hook->write) {
+ if (hook->write(info, msr_num, msr_val, hook->priv_data) == -1) {
+ PrintError("Error in MSR hook Write\n");
+ return -1;
+ }
+ } else {
+ PrintError("No write hook exists for msr 0x%x\n",msr_num);
}
}
int v3_msr_unhandled_read(struct guest_info * core, uint32_t msr, struct v3_msr * dst, void * priv_data) {
V3_Print("Palacios: Unhandled MSR Read (MSR=0x%x) - returning zero\n", msr);
- dst->lo=dst->hi=0;
+
+ dst->value = 0;
+
// should produce GPF for unsupported msr
return 0;
}