deallocate arch specific IO/MSR hook state

[palacios.git] / palacios / src / palacios / vmm_hypercall.c

diff --git a/palacios/src/palacios/vmm_hypercall.c b/palacios/src/palacios/vmm_hypercall.c
index 7dda3a4..c664a83 100644 (file)
--- a/palacios/src/palacios/vmm_hypercall.c
+++ b/palacios/src/palacios/vmm_hypercall.c
@@ -127,6 +127,22 @@ int v3_register_hypercall(struct v3_vm_info * vm, hcall_id_t hypercall_id,
 }
 
 
+int v3_remove_hypercall(struct v3_vm_info * vm, hcall_id_t hypercall_id) {
+    struct hypercall * hcall = get_hypercall(vm, hypercall_id);
+
+    if (hcall == NULL) {
+       PrintError("Attempted to remove non existant hypercall\n");
+       return -1;
+    }
+
+    v3_rb_erase(&(hcall->tree_node), &(vm->hcall_map));
+
+    V3_Free(hcall);
+
+    return 0;
+}
+
+
 int v3_handle_hypercall(struct guest_info * info) {
     hcall_id_t hypercall_id = *(uint_t *)&info->vm_regs.rax;
     struct hypercall * hcall = get_hypercall(info->vm_info, hypercall_id);