As the sv_shared_page_base now pointed out to the native sharedpage and the process VA layout has changed as follows: VDSOPAGE (2 * PAGE_SIZE) SHAREDPAGE (PAGE_SIZE) USRSTACK fixup the vDSO name by calculating the start of page relative to the native sharedpage. Differential revision: https://reviews.freebsd.org/D30903 MFC after: 2 weeks