Re: [RFC PATCH v1 3/9] KVM: guest_memfd: Add KVM capability to check if guest_memfd is host mappable

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On Thu, 23 Jan 2025 at 11:42, David Hildenbrand <david@xxxxxxxxxx> wrote:
>
> On 22.01.25 16:27, Fuad Tabba wrote:
> > Add the KVM capability KVM_CAP_GUEST_MEMFD_MAPPABLE, which is
> > true if mapping guest memory is supported by the host.
> >
> > Signed-off-by: Fuad Tabba <tabba@xxxxxxxxxx>
> > ---
> >   include/uapi/linux/kvm.h | 1 +
> >   virt/kvm/kvm_main.c      | 4 ++++
> >   2 files changed, 5 insertions(+)
> >
> > diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
> > index 502ea63b5d2e..021f8ef9979b 100644
> > --- a/include/uapi/linux/kvm.h
> > +++ b/include/uapi/linux/kvm.h
> > @@ -933,6 +933,7 @@ struct kvm_enable_cap {
> >   #define KVM_CAP_PRE_FAULT_MEMORY 236
> >   #define KVM_CAP_X86_APIC_BUS_CYCLES_NS 237
> >   #define KVM_CAP_X86_GUEST_MODE 238
> > +#define KVM_CAP_GUEST_MEMFD_MAPPABLE 239
>
> Maybe similarly consider calling this something like
>
> KVM_CAP_GUEST_MEMFD_SHARED_MEM
>
> No strong opinion on this one, though.

Ack. That would make the naming consistent.
/fuad

> --
> Cheers,
>
> David / dhildenb
>




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