• Gregory Haskins's avatar
    KVM: irqfd · 721eecbf
    Gregory Haskins authored
    KVM provides a complete virtual system environment for guests, including
    support for injecting interrupts modeled after the real exception/interrupt
    facilities present on the native platform (such as the IDT on x86).
    Virtual interrupts can come from a variety of sources (emulated devices,
    pass-through devices, etc) but all must be injected to the guest via
    the KVM infrastructure.  This patch adds a new mechanism to inject a specific
    interrupt to a guest using a decoupled eventfd mechnanism:  Any legal signal
    on the irqfd (using eventfd semantics from either userspace or kernel) will
    translate into an injected interrupt in the guest at the next available
    interrupt window.
    Signed-off-by: default avatarGregory Haskins <ghaskins@novell.com>
    Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
    721eecbf
eventfd.c 7.86 KB