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    SubjectRe: [ 40/46] KVM: PIC: call ack notifiers for irqs that are dropped form irr
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    On Sun, 2012-08-19 at 20:59 -0700, Greg Kroah-Hartman wrote:
    > From: Greg KH <gregkh@linuxfoundation.org>
    >
    > 3.5-stable review patch. If anyone has any objections, please let me know.
    >
    > ------------------
    >
    > From: Gleb Natapov <gleb@redhat.com>
    >
    > (cherry picked from commit aea218f3cbbcaac249b6b2c98930a00d6d931f1e)
    >
    > After commit 242ec97c358256 PIT interrupts are no longer delivered after
    > PIC reset. It happens because PIT injects interrupt only if previous one
    > was acked, but since on PIC reset it is dropped from irr it will never
    > be delivered and hence acknowledged. Fix that by calling ack notifier on
    > PIC reset.
    [...]

    Based on the commit blamed for the regression, I think this is needed
    for 3.4 as well.

    Ben.

    --
    Ben Hutchings
    Experience is what causes a person to make new mistakes instead of old ones.
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