Fpstate Vso [hot] Now

The fpstate is the actual in-memory copy of all FPU registers saved and restored during context switches. If a task is actively using the FPU, the registers on the CPU are more current; when the kernel switches tasks, it saves those registers into the fpstate buffer. Importance in the Linux Kernel

The most impressive feature of the VSO model is how it handles transitions. What happens if a process starts with SSE instructions and then suddenly decides to use AVX-512?

Is "fpstate" a in your code or a status in a workflow? Who is your target audience ?

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