It is a bug that should finally get its PR :-) pmap_pdp_ctor() abuses pmap_kenter_pa() to change the protection of an already existing mapping. According to rmind this is because on x86 pmap_protect() does not work for pmap_kernel().
-- Juergen Hannken-Illjes - hann...@eis.cs.tu-bs.de - TU Braunschweig (Germany) On Aug 9, 2011, at 3:31 PM, Emmanuel Dreyfus wrote: > Hi > > I have a -current Xen DOMU that randomly says: > pmap_kenter_pa: mapping already present > > It happens in sys/arch/x86/x86/pmap.c > That seems completely harmless, but in the code there is a comment > /* This should not happen */ > > Is it a realy bug, or should this printf be #ifdef DEBUG ? > > -- > Emmanuel Dreyfus > m...@netbsd.org
