If I were to guess, I think this is plumbing related to the new (?) capability of PCIe-attached NVMe storage.
Also, what's "CP support of Linux on Z"? - KB ------- Original Message ------- On Monday, April 17th, 2023 at 12:17 AM, Seymour J Metz <[email protected]> wrote: > IBM has been using PCI and PCIe internally for some time. > > Memory-mapped I/O is a process whereby an address generated by the CPU os > translated to an address in an I/O device connected to the CPU, in this case > an I/O device on a PCIe bus. > > Does anybody use that feature other than Linux on Z and CP support of Linux > on Z? > > > -- > Shmuel (Seymour J.) Metz > http://mason.gmu.edu/~smetz3 > > ________________________________________ > From: IBM Mainframe Discussion List [[email protected]] on behalf of > Farley, Peter [[email protected]] > Sent: Sunday, April 16, 2023 11:42 AM > To: [email protected] > Subject: What is "Mapped-I/O-addressing facility" in z16? > > A question out of pure curiosity: In the z16 version of PoOP (SA22-7832-13) > there is mention in the "Summary of Changes in Fourteenth Edition" section of > this enhancement: > > Mapped-I/O-addressing facility [PCI ONLY] > > I can find no other reference to such a facility anywhere in that document. > > Does anyone know what that item refers to? > > Peter > > > > This message and any attachments are intended only for the use of the > addressee and may contain information that is privileged and confidential. If > the reader of the message is not the intended recipient or an authorized > representative of the intended recipient, you are hereby notified that any > dissemination of this communication is strictly prohibited. If you have > received this communication in error, please notify us immediately by e-mail > and delete the message and any attachments from your system. > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
