On 19/08/2025 21:03, Luck, Tony wrote: >> For struct mce? Maybe that should be 2 new fields: >> >> __u64 addr; /* Deprecated */ >> ... >> __u64 mci_addr; /* Bank's MCi_ADDR MSR */ >> __u64 phys_addr; /* Physical address */ > > Would "addr" keep the current (low bits masked, high bits preserved) value? Yeah, it wouldn't make much sense if phys_addr was the same as addr anyway. Not really thinking