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QEMU 10.1.0

(wiki.qemu.org)
302 points dmitrijbelikov | 2 comments | 27 Aug 25 11:02 UTC | HN request time: 0s | source
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simonebrunozzi ◴[27 Aug 25 19:07 UTC] No.45043703[source]▶
Curious: how do people use Qemu the most these days? Dev environment? Running specific apps on a different OS? I don't know... gaming?
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1. mdaniel ◴[28 Aug 25 01:25 UTC] No.45047272[source]▶
I'd suspect a great deal of people are secretly benefiting from qemu when they do $(docker build --platform linux/{arm64,amd64}) courtesy of binfmt_misc and a static copy of qemu

- https://github.com/moby/buildkit/blob/v0.23.2/docs/multi-pla...

- https://github.com/moby/buildkit/blob/v0.23.2/Dockerfile#L16...

- https://github.com/tonistiigi/binfmt/blob/buildkit/v9.2.2-54...

- https://github.com/tonistiigi/binfmt/blob/buildkit/v9.2.2-54... and https://github.com/tonistiigi/binfmt/blob/buildkit/v9.2.2-54...

and let me tell you from first-hand experience, that trying to swap in an updated version of the bundled qemu binary when the static version panics on some mis-emulated instruction is some whooooooo, boy

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2. mdaniel ◴[28 Aug 25 01:31 UTC] No.45047308[source]▶
Then again, everything in buildkit is designed for maximum opacity, in my experience so I guess it tracks