Re: [RFC PATCH v2 09/37] KVM: guest_memfd: Add support for KVM_SET_MEMORY_ATTRIBUTES2

[Sean Christopherson]

On Sat, Feb 14, 2026, Ackerley Tng wrote:
> Sean is against deferring whether to preserve memory to the underlying
> hardware because that is letting (effectively) micro-architectural
> behavior to define KVM's ABI. KVM's uAPI cannot let behavior be
> undefined, or be based on vendor, and maybe even on firmware version.

Concretely, we'll end up with a giant mess if TDX and/or SNP adds support for
preserving contents on conversion.