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More surprising is that it’s taken ~4 years for these Linux kernel patches to materialize with Zen 3 having first debuted in late 2020.
Reminder: Linux kernel funding us 2% of the Linux foundation’s 200M$/year budget.
the Linux kernel hasn’t widely made use of INVLPGB… In part because Intel engineers typically carry out much of the new x86 instruction optimizations within the Linux kernel and Intel processors do not currently support INVLPGB.
Sounds like AMD needs to fund more kernel development.
whats the rest then?
$196,000,000
I can’t keep up with the architecture family lines; is the Ryzen 7 5800 series on the Zen 3 line?
Assuming you’re talking about the 5800x, yes.
That’s
INVLPGwhich has been there since the 486. The AMD64 Programmer’s Manual has some info on the differences betweenINVLPG,INVLPGA, andINVLPGBthough.
