On Mon, Apr 11, 2005 at 09:56:53AM -0700, Roland Dreier wrote: > Troy> Is there a check in the kernel that the memory is actually > Troy> mlock()ed? > > No. > > Troy> What if a malicious (or broken) application does > Troy> ibv_reg_mr() but doesn't lock the memory? Does the IB card > Troy> get a physical address for a page that might get swapped > Troy> out? > > No, the kernel does get_user_pages(). So the pages that the HCA gets > will not be swapped or used for anything else. The only thing a > malicious userspace app can do is screw itself up. > > - R.
Do we even need the mlock in userspace then? _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
