diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index 74fb15551e83..91ffb2ae0fef 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -2750,8 +2750,12 @@ int sev_mem_enc_register_region(struct kvm *kvm,
 	if (!region)
 		return -ENOMEM;
 
+	/*
+	 * Do NOT specify FOLL_WRITE, as KVM isn't using the pinned pages to
+	 * write memory, and FOLL_LONGTERM itself triggers CoW unshare.
+	 */
 	region->pages = sev_pin_memory(kvm, range->addr, range->size, &region->npages,
-				       FOLL_WRITE | FOLL_LONGTERM);
+				       FOLL_LONGTERM);
 	if (IS_ERR(region->pages)) {
 		ret = PTR_ERR(region->pages);
 		goto e_free;