Hello,
Now that "x86/hvm: implement hvmemul_write() using real mappings" is in,
we can start working again on implementing hvmemul_cmpxchg() with a real
CMPXCHG, and finally fix the SMP emulation race upstream.
However, in order to do that we would need X86EMUL_CMPXCHG_FAILED which
has been dropped by Andrew here:
https://patchwork.kernel.org/patch/9449339/
and re-contributed by Jan here:
https://patchwork.kernel.org/patch/9651613/
(the patch is a combination of Jan's patch and my fumbling with CMPXCHG).
However, I remember Jan saying that his patch is no longer the way to go
here. How should we proceed?
Thanks,
Razvan
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