TIL every OS will have to unmap kernel from regular processes' virtual memory, and do 2 fuckin' TLB flushes on every syscall, because Intel has a CPU bug in speculative execution.
https://www.theregister.co.uk/2018/01/02/intel_cpu_design_flaw/
@Wolf480pl Only on Intel CPUs, though :)
"...we're looking at a ballpark figure of five to 30 per cent slow down..."
This is company-ending kind of stuff. Or it would be if it were any company other than Intel, and if their competitors had any kind of competence whatsoever.
@seanl what about AMD, and all the ARM ecosystem?
@Wolf480pl the last time AMD had this much of an advantage on Intel was that time Intel couldn't figure out 64-bit processors.
@Wolf480pl Well, on Intel CPUs anyway, right? They won't have to do this on AMD CPUs?
@Canageek yeah, AMD seems to be unaffected.
@Wolf480pl and when big is a circuit design problem then we can't fix it OTA ;)