linux-kernel - Re: userfaultfd: two-step UFFDIO

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <85464663-4406-4e06-92e4-6f0f2353d147@yandex.ru>
Date: Tue, 26 Nov 2024 12:41:10 +0300
From: stsp <stsp2@...dex.ru>
To: Muhammad Usama Anjum <Usama.Anjum@...labora.com>,
 Peter Xu <peterx@...hat.com>
Cc: Linux kernel <linux-kernel@...r.kernel.org>
Subject: Re: userfaultfd: two-step UFFDIO_API always gives -EINVAL

25.11.2024 21:44, Muhammad Usama Anjum пишет:
> The UFFD_FEATURE_WP_ASYNC was designed for exactly this case.
> The IOCTL will return you the modified pages. An example of usage
> can be found in selftest/mm/pagemap_ioctl.c.
Am I right that in this case there
are no more async notifications?
I.e. I need to run PAGEMAP_SCAN
ioctl() periodically, and there is
nothing to "ping" me on that?
Or have I missed that part in the
pagemap_ioctl.c?