Hi Bill from the distant past.... I am NOT NOT NOT asking you to take you time to explain to me, just point to existing documents (including any you may have written that you can share). warning: I have been out of mainframes for 20 years and had no formal training on x86 computers.
My ONLY question to you is the goal below. Are you aware of any printed books, downloadable documents, other list servers where I can ask, or can you suggest how I could craft a web search for: Wanted-- An explanation (and comparison) of x86 vs IBM virtualization, for a person with ONLY zVM background. Including glossary of terms (like what we called core cancer, t think they call memory leak). Hopefully explaining x86 ring levels beyond their existence level that I am aware of. Optional bonus: A comparison x86 vs ARM, and within x86, AMD vs Intel. And are there add-on hardware memory managers that might not easily be identified when I walk into a computer store to buy one? As to which is "better", or do each have advantages in some areas? I hadn't thought about this till I started this email, and have found some promising articles, but so far all written for somebody whose vocabulary base is x86...which is like middle english would be to me. I have not written in machine code for small computers beyond the Z-80. Also I would like details on malware exposures and how to protect the hypervisor from them. For instance, it seems to me that "buffer overrun" (though historically mostly winblows) could in theory happen in any intel based system since unlike mainframes, the hardware does not hard block the end of the input buffer. I read about X86 type 1 vs type 2 hypervisors, but then details of some purported type 1 sound more like type 2 to me. Then I found Qubes (and I think parents, children and siblings of it) which at first glance sounds like the most extreme type 1 possible given the x86 memory architecture. But it seems Qubes is still not complete. And maybe to be secure, to I need to have multiple Ethernet adapters, one for each guest? Or maybe running a linux firewall in a read-only guest would suffice? personal disappointment: Wikipedia seems totally ignorant of any virtualization other than IBM-z/x86/sparc/arm/power, while every other mainframe manufacturer I presume has some form, HP, Digital, I think I even heard that some big cisco routers virtualization, and other IBM product lines, but maybe they were other processors under the covers, such as later AS/400s being power processors. Some quick searches show many of them migrating to ARM, MIPS, etc, so maybe not. Except there was a reference to MIPS virtualization, which is not in the table in wikipedia. Oh, MIPS is dead, maybe RISC-V? Quick search seems to indicate there is no working hypervisor for RISC-V yet, but it is in development? --Carey ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
