On Wed, 30 Apr 2025 at 22:33, David Hildenbrand <david@xxxxxxxxxx> wrote: > > On 30.04.25 18:56, Fuad Tabba wrote: > > Add support for mmap() and fault() for guest_memfd backed memory > > in the host for VMs that support in-place conversion between > > shared and private. To that end, this patch adds the ability to > > check whether the VM type supports in-place conversion, and only > > allows mapping its memory if that's the case. > > > > This patch introduces the configuration option KVM_GMEM_SHARED_MEM, > > which enables support for in-place shared memory. > > > > It also introduces the KVM capability KVM_CAP_GMEM_SHARED_MEM, which > > indicates that the host can create VMs that support shared memory. > > Supporting shared memory implies that memory can be mapped when shared > > with the host. > > I think you should clarify here that it's not about "supports in-place > conversion" in the context of this series. > > It's about mapping shared pages only; initially, we'll introduce the > option to only have shared memory in guest memfd, and later we'll > introduce the option for in-place conversion. That's right. I'll fix this. Thanks, /fuad > -- > Cheers, > > David / dhildenb >
