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The road to Zettalinux

The road to Zettalinux

Posted Sep 17, 2022 6:33 UTC (Sat) by mirabilos (subscriber, #84359)
Parent article: The road to Zettalinux

I can imagine the fun of keeping even just one 128-bit variable in CPU registers on 32-bit systems, which we will certainly also still use.

i386 with its three(!) normally available 32-bit registers, especially…

And he wants 256 bits on the userspace/kernel boundary for one pointer‽

Wasteful.

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The road to Zettalinux

Posted Sep 23, 2022 16:16 UTC (Fri) by flussence (guest, #85566) [Link]

Oh I imagine at that point they'll just declare anything with less than SSE2 unsupported and start using the XMM* regs to pass pointers. Even then that'd still be less contempt than I've seen some userspace "Not In My $1500 Ultrabook" programmers show - if it's not x86-64 they've never heard of it.


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