Re: [PATCH 1/3] Revert "x86/msr: drop compatibility #GP handling in guest_{rd,wr}msr()"

[Ian Jackson <iwj@xxxxxxxxxxxxxx>]

I have read this thread and with my release manager hat on I feel
confused and/or ignorant.

Patch 3/ has a good explanation of what the problem is it is
addressing and why this is important for 4.15.  But then there is
Jan's most recent reply starting "I find all of this confusing".  Jan,
can you please tell me in words of one syllable what the implication
of that message is ?  In particular is any of what you say a reason
for me to withhold my release-ack ?

AFAICT there is no explanation for why patches 1/ and 2/ deserve to go
into 4.15.  We are late in the freeze now, so I would ideally be
looking for a clear and compelling argument.  I'd also like to
understand what the risks are of taking these.  Can someone please
enlighten me ?

Thanks,
Ian.