My iPad runs Windows XP now, and it's all I ever wanted
Briefly

Apple-approved UTM SE allows iOS devices to mimic PC hardware to run desktop OSes, lacking JIT compiler due to Apple guidelines, making it generally slow beyond older operating systems.
M1 iPad Pro successfully ran Windows XP using UTM SE, requiring tweaking pre-built machines with extended RAM/storage; despite slow installation, performance post-setup was acceptable compared to older machines.
Read at The Verge
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