SVM_MSR_BITMAP_SIZE
vmm_contig_free(sc->msr_bitmap, SVM_MSR_BITMAP_SIZE);
KASSERT(index >= 0 && index < SVM_MSR_BITMAP_SIZE,
svm_sc->msr_bitmap = vmm_contig_alloc(SVM_MSR_BITMAP_SIZE);
memset(svm_sc->msr_bitmap, 0xFF, SVM_MSR_BITMAP_SIZE);