linux-kernel - [PATCH 0/4] kvm: level triggered irqfd support

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

Message-ID: <20120622220040.9858.43665.stgit@bling.home>
Date:	Fri, 22 Jun 2012 16:15:09 -0600
From:	Alex Williamson <alex.williamson@...hat.com>
To:	avi@...hat.com
Cc:	kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
	jan.kiszka@...mens.com, mst@...hat.com
Subject: [PATCH 0/4] kvm: level triggered irqfd support

Here's a refined series based on my previous RFC.  I now have this
working through VFIO-based device assignment in Qemu.  I've split
up the patches and tried to generalize the interface as one of
potentially a couple ways we might support level irqfds.  I also
tried to document the requirements around re-asserting interrupts
and expectations for avoiding races.

The last patch in the series is just an FYI/RFC of something I
expect we're also going to need.  We want to take advantage of KVM
irqchip, but not be dependent on it.  That means we'll want to come
up with a way for Qemu to notify drivers of an EOI.  We won't want
that interface to break when when enabling the in-kernel irqchip.
The needs are just different enough that I don't see how to combine
them together.  Thanks,

Alex

---

Alex Williamson (4):
      [RFC] kvm: eoi_eventfd
      kvm: Extend irqfd to support level interrupts
      kvm: Add missing KVM_IRQFD API documentation
      kvm: Pass kvm_irqfd to functions

 Documentation/virtual/kvm/api.txt |   46 ++++++++
 arch/x86/kvm/x86.c                |    2 
 include/linux/kvm.h               |   18 +++
 include/linux/kvm_host.h          |   11 ++
 virt/kvm/eventfd.c                |  201 ++++++++++++++++++++++++++++++++++---
 virt/kvm/kvm_main.c               |   11 ++
 6 files changed, 268 insertions(+), 21 deletions(-)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/