}
/*
- * Exclude KeyID bits from physical address bits.
- *
- * We have to do this even if we are not going to use KeyID bits
- * ourself. VM guests still have to know that these bits are not usable
- * for physical address.
+ * KeyID bits effectively lower the number of physical address
+ * bits. Update cpuinfo_x86::x86_phys_bits accordingly.
*/
c->x86_phys_bits -= keyid_bits;
}