Re: [RFC V3 PATCH 3/6] selftests: kvm: ucall: Allow querying ucall pool gpa

On Mon, Oct 17, 2022, Vishal Annapurve wrote:

This is much sleeker and will avoid hacking KVM for testing. Only caveat here is that these tests will not be able to exercise implicit conversion path if we go this route.

Yeah, I think that's a perfectly fine tradeoff. Implicit conversion isn't strictly a UPM feature, e.g. if TDX and SNP "architecturally" disallowed implicit conversions, then KVM wouldn't need to support implicit conversions at all, i.e. that testing can be punted to SNP and/or TDX selftests.