04-12-2019, 12:51 AM
https://www.tomshardware.com/news/intel-...39047.html
Quote:The researchers note that Spoiler can’t be mitigated in software and that new Intel CPUs will need hardware changes to prevent attackers from exploiting this flaw. However, they also said that said hardware mitigation would likely bring a performance penalty to Intel’s CPUs.
Although most CPUs are affected by most Spectre flaws, Spoiler, Meltdown, Foreshadow, and other such Intel CPU-only flaws show the company has been more willing to de-prioritize security to get ahead of the competition in terms of performance.
As far as Spoiler mitigations are concerned, Intel seems to be currently handing over the burden to software developers that the company encourages to use side-channel-safe software development practices.
This would mean that Intel would be off the hook for fixing its memory subsystem, and whatever software changes developers need to make to their software to protect their apps from Spoiler would slow down these apps not just on Intel hardware, but also AMD and Arm hardware.