I won't be opening that can of worms if only trying to explain what CHPID's are is going to be hard enough.
On Wed, Jun 15, 2022 at 2:39 PM kekronbekron < [email protected]> wrote: > Somebody mixing up the IODF is a far bigger problem for the LPARs > operationally first... let alone security. > If a CHPID is shared between the 2 LPARs, then yes, the pipe is shared. > > But is it a security "gotcha"? Unlikely to hell and back. > I think this goes down to microcode and I would bet that IBM test these > things out for 'leaks' thoroughly. > > Anyway, if you do let your security know that the CHPID is shared, be > prepared for many months and years of isolated CHPID talk, etc. > > Do correct me if I'm wrong: > > LPAR <-> unit <-> control unit <-> chpid <-> pchid <-> FC switch > > I don't believe there's room for a "whoopsie, I sent to this LPAR instead". > Can't quite explain it clearly. > Someone like Timothy Sipples can do that magic! > > - KB > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
