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Time Travel Debugging #42
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!: help wantedExtra attention is neededExtra attention is neededA: infraProject infrastructure: build system, issues, servers, etc.Project infrastructure: build system, issues, servers, etc.P: minorMinor priority. (Lower than major.) This issue is not urgent.Minor priority. (Lower than major.) This issue is not urgent.
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!: help wantedExtra attention is neededExtra attention is neededA: infraProject infrastructure: build system, issues, servers, etc.Project infrastructure: build system, issues, servers, etc.P: minorMinor priority. (Lower than major.) This issue is not urgent.Minor priority. (Lower than major.) This issue is not urgent.
It looks like QEMU has a record/replay feature these days.
It'd be nice if somebody played around with it and got it working for ukoOS debugging.
If it's reliable and low-overhead enough, it might even make sense as a default -- when execution reaches some "bad point" (e.g. a kernel panic), we should back out of the panic handler / trap handler until we get back to the panicking code.