mshv_vtl_hvcall
struct mshv_vtl_hvcall __user *hvcall_user)
struct mshv_vtl_hvcall hvcall;
if (copy_from_user(&hvcall, hvcall_user, sizeof(struct mshv_vtl_hvcall)))
return mshv_vtl_hvcall_call(fd, (struct mshv_vtl_hvcall __user *)arg);
#define MSHV_HVCALL _IOWR(MSHV_IOCTL, 0x1F, struct mshv_vtl_hvcall)