KVM: Use vfree for memory allocated by vcalloc()/__vcalloc()

commit 37b2a65("KVM: use __vcalloc for very large allocations")
replaced kvzalloc()/kvcalloc() with vcalloc(), but didn't replace kvfree()
with vfree().

Signed-off-by: Li RongQing <lirongqing@baidu.com>
Link: https://lore.kernel.org/r/20240131012357.53563-1-lirongqing@baidu.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

arch/x86/kvm/mmu/page_track.c

@@ -41,7 +41,7 @@ bool kvm_page_track_write_tracking_enabled(struct kvm *kvm)
 
 void kvm_page_track_free_memslot(struct kvm_memory_slot *slot)
 {
-	kvfree(slot->arch.gfn_write_track);
+	vfree(slot->arch.gfn_write_track);
 	slot->arch.gfn_write_track = NULL;
 }
 

arch/x86/kvm/x86.c

@@ -12731,7 +12731,7 @@ static void memslot_rmap_free(struct kvm_memory_slot *slot)
 	int i;
 
 	for (i = 0; i < KVM_NR_PAGE_SIZES; ++i) {
-		kvfree(slot->arch.rmap[i]);
+		vfree(slot->arch.rmap[i]);
 		slot->arch.rmap[i] = NULL;
 	}
 }
@@ -12743,7 +12743,7 @@ void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *slot)
 	memslot_rmap_free(slot);
 
 	for (i = 1; i < KVM_NR_PAGE_SIZES; ++i) {
-		kvfree(slot->arch.lpage_info[i - 1]);
+		vfree(slot->arch.lpage_info[i - 1]);
 		slot->arch.lpage_info[i - 1] = NULL;
 	}
 
@@ -12835,7 +12835,7 @@ static int kvm_alloc_memslot_metadata(struct kvm *kvm,
 	memslot_rmap_free(slot);
 
 	for (i = 1; i < KVM_NR_PAGE_SIZES; ++i) {
-		kvfree(slot->arch.lpage_info[i - 1]);
+		vfree(slot->arch.lpage_info[i - 1]);
 		slot->arch.lpage_info[i - 1] = NULL;
 	}
 	return -ENOMEM;

virt/kvm/kvm_main.c

@@ -1020,7 +1020,7 @@ static void kvm_destroy_dirty_bitmap(struct kvm_memory_slot *memslot)
 	if (!memslot->dirty_bitmap)
 		return;
 
-	kvfree(memslot->dirty_bitmap);
+	vfree(memslot->dirty_bitmap);
 	memslot->dirty_bitmap = NULL;
 }