[KVM PATCH v5 0/4] irqfd fixes and enhancements

From: Gregory Haskins
Date: Thu Jun 25 2009 - 09:28:27 EST


(Applies to kvm.git/master:4631e094)

The following is the latest attempt to fix the races in irqfd/eventfd, as
well as restore DEASSIGN support. For more details, please read the patch
headers.

This series has been tested against the kvm-eventfd unit test, and
appears to be functioning properly. You can download this test here:

ftp://ftp.novell.com/dev/ghaskins/kvm-eventfd.tar.bz2

I've included version 4 of Davide's eventfd patch (ported to kvm.git) so
that its a complete reviewable series. Note, however, that there may be
later versions of his patch to consider for merging, so we should
coordinate with him.

-Greg

---

Davide Libenzi (1):
eventfd - revised interface and cleanups (4th rev)

Gregory Haskins (3):
KVM: add irqfd DEASSIGN feature
KVM: Fix races in irqfd using new eventfd_kref_get interface
kvm: prepare irqfd for having interrupts disabled during eventfd->release


drivers/lguest/lg.h | 2
drivers/lguest/lguest_user.c | 4 -
fs/aio.c | 24 +---
fs/eventfd.c | 126 ++++++++++++++++---
include/linux/aio.h | 4 -
include/linux/eventfd.h | 35 ++++-
include/linux/kvm.h | 2
include/linux/kvm_host.h | 7 +
virt/kvm/Kconfig | 1
virt/kvm/eventfd.c | 284 +++++++++++++++++++++++++++++++++---------
10 files changed, 379 insertions(+), 110 deletions(-)

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