Re: [PATCH v2 3/7] x86/sev: add support for RMPOPT instruction

[Dave Hansen]

On 3/4/26 07:56, Andrew Cooper wrote:
> Logic asking hardware to optimise a 1G region because of no guest memory
> should at least WARN() if hardware comes back and says "well hang on now..."

It would be _nice_ to have a system where we can do a WARN(). But for
something that's just a lowly optimization, I'd rather that RMPOPT lose
the occasional race with a shared=>private conversion than have it take
a lock and _block_ those conversions.