Re: [PATCH v13 16/35] KVM: Add KVM_CREATE_GUEST_MEMFD ioctl() for guest-specific backing memory

[Paolo Bonzini]

On Tue, Oct 31, 2023 at 11:13 PM Sean Christopherson <seanjc@xxxxxxxxxx> wrote:
> On Tue, Oct 31, 2023, Fuad Tabba wrote:
> > On Fri, Oct 27, 2023 at 7:23 PM Sean Christopherson <seanjc@xxxxxxxxxx> wrote:
> Since we now know that at least pKVM will use guest_memfd for shared memory, and
> odds are quite good that "regular" VMs will also do the same, i.e. will want
> guest_memfd with the concept of private memory, I agree that we should avoid
> PRIVATE.
>
> Though I vote for KVM_MEM_GUEST_MEMFD (or KVM_MEM_GUEST_MEMFD_VALID or
> KVM_MEM_USE_GUEST_MEMFD).  I.e. do our best to avoid ambiguity between referring
> to "guest memory" at-large and guest_memfd.

I was going to propose KVM_MEM_HAS_GUESTMEMFD.  Any option
is okay for me so, if no one complains, I'll go for KVM_MEM_GUESTMEMFD
(no underscore because I found the repeated "_MEM" distracting).

Paolo