Davide Libenzi cb289d6244 eventfd - allow atomic read and waitqueue remove ...

KVM needs a wait to atomically remove themselves from the eventfd ->poll()
wait queue head, in order to handle correctly their IRQfd deassign
operation.

This patch introduces such API, plus a way to read an eventfd from its
context.

Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Signed-off-by: Avi Kivity <avi@redhat.com>

2010-01-25 12:26:38 -02:00

2.1 KiB

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