From: David Vrabel <david.vrabel@citrix.com>
To: xen-devel@lists.xen.org
Cc: Keir Fraser <keir@xen.org>,
David Vrabel <david.vrabel@citrix.com>,
Jan Beulich <jan.beulich@suse.com>
Subject: [PATCHv2 0/3] Xen: FIFO-based event channel ABI fixes
Date: Thu, 31 Oct 2013 15:03:08 +0000 [thread overview]
Message-ID: <1383231791-4604-1-git-send-email-david.vrabel@citrix.com> (raw)
This series addresses two design flaws in the FIFO-based event channel
ABI.
1. Allow guests to expand the array after binding events.
2. Fix a potential DoS caused by an unbounded loop when setting LINK.
An updated design document is available from:
http://xenbits.xen.org/people/dvrabel/event-channels-G.pdf
- Add section on memory barriers.
- EVTCHNOP expand array should be called after binding events.
- Guest clearing MASKED on a tail event is no longer valid, a
hypercall is required. This allows the loop in the Xen's link()
function to be bounded.
v8 of the Linux patches will be posted shortly.
Changes since v1:
- Add MAINTAINERS patch
- Remove some unnecessary temporary pending state clears
- Add fix for DoS
next reply other threads:[~2013-10-31 15:03 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-31 15:03 David Vrabel [this message]
2013-10-31 15:03 ` [PATCH 1/3] MAINTAINERS: Add FIFO-based event channel ABI maintainer David Vrabel
2013-11-04 14:29 ` Jan Beulich
2013-11-05 21:06 ` Keir Fraser
2013-11-06 11:49 ` David Vrabel
2013-11-06 12:40 ` Jan Beulich
2013-10-31 15:03 ` [PATCH 2/3] evtchn: don't lose pending state if FIFO event array page is missing David Vrabel
2013-11-04 14:29 ` Jan Beulich
2013-11-05 21:07 ` Keir Fraser
2013-10-31 15:03 ` [PATCH 3/3] evtchn/fifo: don't spin indefinitely when setting LINK David Vrabel
2013-10-31 18:13 ` Boris Ostrovsky
2013-11-04 14:39 ` Jan Beulich
2013-11-04 14:52 ` David Vrabel
2013-11-04 14:57 ` Jan Beulich
2013-11-04 16:30 ` David Vrabel
2013-11-05 14:18 ` Jan Beulich
2013-11-04 15:07 ` Ian Campbell
2013-11-04 15:11 ` David Vrabel
2013-11-05 14:19 ` Jan Beulich
2013-11-05 14:25 ` Jan Beulich
2013-11-06 13:38 ` David Vrabel
2013-11-06 15:01 ` Boris Ostrovsky
2013-11-06 15:07 ` David Vrabel
2013-11-10 21:21 ` Matt Wilson
2013-10-31 15:13 ` [PATCHv2 0/3] Xen: FIFO-based event channel ABI fixes David Vrabel
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1383231791-4604-1-git-send-email-david.vrabel@citrix.com \
--to=david.vrabel@citrix.com \
--cc=jan.beulich@suse.com \
--cc=keir@xen.org \
--cc=xen-devel@lists.xen.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).