Re:The Next Vulnerability: Looking Back on Meltdown and Spec...
by childintime on Monday February 11, 2019 @05:16AM
(#19133310)
Exactly, the low end isn't vulnerable, nor is the the Mill architecture on the high end (see millcomputing.com). The Mill isn't silicon yet, but the architecture is sound (and of extreme beauty). It is an architecture for the Intel sized out there though.
The Mill makes the current OOO look bad (Intel, AMD, others). It is striking to see that "experts", on this page and the writer of the article, act as if it didn't exist.
The Mill can save Intel, or destroy it, Intel decides that. The pos-x86 nears and time is running out. Intel needs a new architecture and RISC-V is only part of the answer.
Re:The Next Vulnerability: Looking Back on Meltdown and Spec...
by twtw on Saturday February 09, 2019 @12:24PM
(#19123445)
Given the phrase "Intel funded" 'childintime is probably confused and thinks AMD Zen is not vulnerable.
Re:The Next Vulnerability: Looking Back on Meltdown and Spec...
by childintime on Monday February 11, 2019 @05:50AM
(#19133495)
Intel is under threat, not only from AMD, but from the end of the x86 era. Of course they need to protect their current bread and butter, but AMD isn't their only worry. Far from it.
Re:The Next Vulnerability: Looking Back on Meltdown and Spec...
by wlesieutre on Saturday February 09, 2019 @02:17PM
(#19124027)
Meltdown IIRC didn’t affect AMD processors, but Spectre was pretty much across the board.
From what I've seen, every major high-end CPU architecture is affected, because they all rely on speculation. Of course, some low-end CPUs (such as ARM Cortex-M cores) don't have speculation, so they aren't vulnerable. But on the high-performance front, I haven't seen a credible alternative that wasn't vulnerable to speculative execution side-channels. Which one am I missing?