kvm

fam_wrappers: Remove code snippet of kvm_save2.len

build(deps): bump rust-vmm-ci from `042b206` to `e34c504`

Remove TODO-comment about safety of casting ptr to *mut u8

Distinguish between safe and unsafe set_msr_filter

vm-ioctls: Add KVM_X86_SET_MSR_FILTER vm ioctl