Hacker News: durrrrrrrrrrrrrhttps://news.ycombinator.com/user?id=durrrrrrrrrrrrrHacker News RSShttps://hnrss.org/hnrss v2.1.1Sat, 19 Sep 2026 14:27:42 +0000<![CDATA[New comment by durrrrrrrrrrrrr in "Jemalloc Postmortem"]]>push_simd/pop_simd exist and are called kernel_fpu_begin/kernel_fpu_end. Their use is practically prohibited in most areas and iiuc not available on all archs, but it's available if needed.

]]>Fri, 13 Jun 2025 15:08:48 +0000https://news.ycombinator.com/item?id=44269231durrrrrrrrrrrrrhttps://news.ycombinator.com/item?id=44269231https://news.ycombinator.com/item?id=44269231<![CDATA[New comment by durrrrrrrrrrrrr in "Jemalloc Postmortem"]]>It's not so much that you can't ever use it, it's more a you really shouldn't. It's more expensive, harder to use and rarely worth it. Main users currently are crypto and raid checksumming.

https://www.kernel.org/doc/html/next/core-api/floating-point...

]]>Fri, 13 Jun 2025 13:50:43 +0000https://news.ycombinator.com/item?id=44268541durrrrrrrrrrrrrhttps://news.ycombinator.com/item?id=44268541https://news.ycombinator.com/item?id=44268541