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.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
