Re: [PATCH] KVM: const-ify all relevant uses of struct kvm_memory_slot

[Hamza Mahfooz]

Hey Peter,

On Fri, Jul 30 2021 at 04:19:21 PM -0400, Peter Xu <peterx@xxxxxxxxxx> 
wrote:
> This patch breaks kvm/queue with above issue.  Constify of 
> kvm_memory_slot
> pointer should have nothing to do with this so at least it should 
> need a
> separate patch.  At the meantime I also don't understand why memcpy() 
> here,
> which seems to be even slower..

To const-ify the slot member of struct slot_rmap_walk_iterator, we need 
to
initialize a new struct and then copy it over (otherwise we would need 
to relay
on casting again or the compiler will complain about it).