[PATCH v4 12/25] KVM: arm64: Add infrastructure to create and track pKVM instances at EL2

[Will Deacon]

On Tue, Oct 18, 2022 at 04:21:11PM +0000, Quentin Perret wrote:
> On Monday 17 Oct 2022 at 12:51:56 (+0100), Will Deacon wrote:
> > +struct pkvm_hyp_vm {
> > +	struct kvm kvm;
> > +
> > +	/* Backpointer to the host's (untrusted) KVM instance. */
> > +	struct kvm *host_kvm;
> > +
> > +	/*
> > +	 * Total amount of memory donated by the host for maintaining
> > +	 * this 'struct pkvm_hyp_vm' in the hypervisor.
> > +	 */
> > +	size_t donated_memory_size;
> 
> I think you could get rid of that member. IIUC, all you need to
> re-compute it in the teardown path is the number of created vCPUs on
> the host, which we should have safely stored in
> pkvm_hyp_vm::kvm::created_vcpus.

Oh, well spotted! I've dropped this as you have suggested.

Will