It's astounding what is going on under the covers. You have this simple step-by-step mental model of execution -- and it is functionally or "observationally" correct* -- but what is actually going on with speculative execution and caching is simply astounding.
*Except when it is not, such as with these vulnerabilities. Charles -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Tom Brennan Sent: Sunday, January 7, 2018 2:01 PM To: [email protected] Subject: Re: Intel Chip flaw (and some AMD/ARM tested too) Thanks, that's a really good explanation - starting with the basics and building up to "Putting it all together" where I finally got lost :) I will try again later. It's interesting to know that the Raspberry Pi 3 on my desk does not do speculative processing, making it immune to the issues. And as an occasional mainframe assembler programmer, I never imagined so much could be going on under the covers. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
