| From | Fuad Tabba <> | Date | Thu, 27 Jul 2023 11:39:38 +0100 | Subject | Re: [RFC PATCH v11 12/29] KVM: Add KVM_CREATE_GUEST_MEMFD ioctl() for guest-specific backing memory |
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Hi Sean,
<snip> ...
> @@ -5134,6 +5167,16 @@ static long kvm_vm_ioctl(struct file *filp, > case KVM_GET_STATS_FD: > r = kvm_vm_ioctl_get_stats_fd(kvm); > break; > + case KVM_CREATE_GUEST_MEMFD: { > + struct kvm_create_guest_memfd guest_memfd; > + > + r = -EFAULT; > + if (copy_from_user(&guest_memfd, argp, sizeof(guest_memfd))) > + goto out; > + > + r = kvm_gmem_create(kvm, &guest_memfd); > + break; > + }
I'm thinking line of sight here, by having this as a vm ioctl (rather than a system iocl), would it complicate making it possible in the future to share/donate memory between VMs?
Cheers, /fuad
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