Commit cb16a7b3 authored by Hillf Danton's avatar Hillf Danton Committed by Avi Kivity
Browse files

KVM: MMU: fix counting of rmap entries in rmap_add() 



It seems that rmap entries are under counted.

Signed-off-by: default avatarHillf Danton <dhillf@gmail.com>
Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
parent a182d873

arch/x86/kvm/mmu.c

+2 −1
Original line number Diff line number Diff line
@@ -632,6 +632,7 @@ static int rmap_add(struct kvm_vcpu *vcpu, u64 *spte, gfn_t gfn) 
		desc->sptes[0] = (u64 *)*rmapp;

		desc->sptes[1] = spte;

		*rmapp = (unsigned long)desc | 1;

		++count;

	} else {

		rmap_printk("rmap_add: %p %llx many->many\n", spte, *spte);

		desc = (struct kvm_rmap_desc *)(*rmapp & ~1ul);
@@ -644,7 +645,7 @@ static int rmap_add(struct kvm_vcpu *vcpu, u64 *spte, gfn_t gfn) 
			desc = desc->more;

		}

		for (i = 0; desc->sptes[i]; ++i)

			;

			++count;

		desc->sptes[i] = spte;

	}

	return count;