(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. You can also find this applied as a git tree: git pull git://git.kernel.org/pub/scm/linux/kernel/git/ghaskins/linux-2.6-hacks.git kvm/irqfd For reviewing convenience, here is a link to the entire virt/kvm/eventfd.c file after the patches are applied: http://git.kernel.org/?p=linux/kernel/git/ghaskins/linux-2.6-hacks.git;a=blob;f=virt/kvm/eventfd.c;h=409d9e160f1f85618a5e3772937b2721a249399a;hb=85cfd57e33dcaea29971513334ca003764653b21 As always, 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 [Changelog: v6: *) Removed slow-work in favor of using a dedicated single-thread workqueue. *) Condensed cleanup path to always use deferred shutdown *) Saved about 56 lines over v5, with the following diffstat: include/linux/kvm_host.h | 2 virt/kvm/eventfd.c | 248 ++++++++++++++++++----------------------------- 2 files changed, 97 insertions(+), 153 deletions(-) v5: Untracked.. ] --- 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 | 5 + virt/kvm/Kconfig | 1 virt/kvm/eventfd.c | 229 +++++++++++++++++++++++++++++++----------- 10 files changed, 321 insertions(+), 111 deletions(-) -- Signature -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
