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Why use ExaGear, why not just use qemu-user-static?

Why would I want to use a (presumably) closed-source solution from Huawei whose documentation is only in Chinese, when I could instead use a well-known open source project with plentiful documentation in English?



It's because Qemu is several orders of magnitude slower, it's not even in the same class of solution.

FEX is an experimental open-source solution at https://github.com/FEX-Emu/FEX, but it's still in heavy development.


> Qemu is several orders of magnitude slower, it's not even in the same class of solution

Why? QEMU has a JIT


Long story... Qemu's JIT is really not what you want for high performance. TCG is much more geared towards portability as a goal.


Exagear is originally from the Russian company Eltechs and was targeted to running x86 apps on SBCs like the Raspberry Pi. e.g. they provided Ubuntu images with wine to run windows apps on a Pi.

They discontinued the product beginning of 2019 and presumably? got bought by Huawei.


And since then the product changed a lot. They target Arm 64-bit machines only nowadays and support both x86 32-bit _and_ 64-bit application compatibility.




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