netdev - Re: aio poll, io_pgetevents and a new in-kernel poll API V3

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

Message-Id: <1516298147.3100407.1240074768.16816EBE@webmail.messagingengine.com>
Date:   Thu, 18 Jan 2018 12:55:47 -0500
From:   Colin Walters <walters@...bum.org>
To:     Jeff Moyer <jmoyer@...hat.com>, Christoph Hellwig <hch@....de>
Cc:     viro@...iv.linux.org.uk, Avi Kivity <avi@...lladb.com>,
        linux-aio@...ck.org, linux-fsdevel@...r.kernel.org,
        netdev@...r.kernel.org, linux-api@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: aio poll, io_pgetevents and a new in-kernel poll API V3



On Thu, Jan 18, 2018, at 11:44 AM, Jeff Moyer wrote:
> Jeff Moyer <jmoyer@...hat.com> writes:
> 
> > FYI, this kernel has issues.  It will boot up, but I don't have
> > networking, and even rebooting doesn't succeed.  I'm looking into it.
> 
> A bisect lands on: eventfd: switch to ->poll_mask.  That's not super
> helpful, though.  I did run the ltp eventfd2 tests, and they all pass.

FWIW: https://git.gnome.org/browse/glib/commit/?id=3904c8761a60dbadbdfaf98fe23ff19cbdcc4a9a

Since that a lot of userspace (including NetworkManager) uses eventfd. I haven't
tried this patchset myself but I'd look at what the GLib mainloop is doing.