> From: Thomas Gleixner <tglx@xxxxxxxxxxxxx> > Sent: Friday, November 11, 2022 9:57 PM > > +/* Invalid XA index which is outside of any searchable range */ > +#define MSI_XA_MAX_INDEX (ULONG_MAX - 1) > +#define MSI_XA_DOMAIN_SIZE (MSI_MAX_INDEX + 1) > + Out of curiosity. Other places treat MSI_MAX_INDEX - 1 as the upper bound of a valid range. This size definition here implies that the last ID is wasted for every domain. Is it intended?
