[KVM PATCH v5 0/2] iosignalfd

From: Gregory Haskins
Date: Wed Jun 03 2009 - 16:17:55 EST


(Applies to kvm.git/master:25deed73)

This is v5 of the series. For more details, please see the header to
patch 2/2.

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

This series is ready to be considered for inclusion, pending any further
review comments.

[
Changelog:

v5:
*) Removed "cookie" field, which was a misunderstanding on my
part on what Avi wanted for a data-match feature
*) Added a new "trigger" data-match feature which I think is
much closer to what we need.
*) We retain the dev_count field in the io_bus infrastructure
and instead back-fill the array on removal.
*) Various minor cleanups
*) Rebased to kvm.git/master:25deed73

v4:
*) Fixed a bug in the original 2/4 where the PIT failure case
would potentially leave the io_bus components registered.
*) Condensed the v3 2/4 and 3/4 into one patch (2/2) since
the patches became interdependent with the fix described above
*) Rebased to kvm.git/master:74dfca0a

v3:
*) fixed patch 2/4 to handle error cases instead of BUG_ON
*) implemented same HAVE_EVENTFD protection mechanism as
irqfd to prevent compilation errors on unsupported arches
*) completed testing
*) rebased to kvm.git/master:7391a6d5

v2:
*) added optional data-matching capability (via cookie field)
*) changed name from iofd to iosignalfd
*) added io_bus unregister function
*) implemented deassign feature

v1:
*) original release (integrated into irqfd v7 series as "iofd")
]

---

Gregory Haskins (2):
kvm: add iosignalfd support
kvm: make io_bus interface more robust


arch/x86/kvm/i8254.c | 22 +++
arch/x86/kvm/i8259.c | 9 +
arch/x86/kvm/x86.c | 1
include/linux/kvm.h | 15 ++
include/linux/kvm_host.h | 16 ++
virt/kvm/coalesced_mmio.c | 8 +
virt/kvm/eventfd.c | 356 +++++++++++++++++++++++++++++++++++++++++++++
virt/kvm/ioapic.c | 9 +
virt/kvm/kvm_main.c | 41 +++++
9 files changed, 462 insertions(+), 15 deletions(-)

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