Re: [PATCH v3 04/70] HostMem: Add mechanism to opt in kvm guest memfd via MachineState

David Hildenbrand
2023-11-15T18:14:11Z

On 15.11.23 08:14, Xiaoyao Li wrote:
> Add a new member "require_guest_memfd" to memory backends. When it's set
> to true, it enables RAM_GUEST_MEMFD in ram_flags, thus private kvm
> guest_memfd will be allocated during RAMBlock allocation.
>
> Memory backend's @require_guest_memfd is wired with @require_guest_memfd
> field of MachineState. MachineState::require_guest_memfd is supposed to
> be set by any VMs that requires KVM guest memfd as private memory, e.g.,
> TDX VM.
>
> Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>

I'm confused, why do we need this if it's going to be the same for all
memory backends right now?

--
Cheers,

David / dhildenb