Messages in this thread | | | Subject | Re: [KVM PATCH v4 3/3] kvm: add iosignalfd support | From | Mark McLoughlin <> | Date | Thu, 04 Jun 2009 14:20:15 +0100 |
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Hi Greg,
On Wed, 2009-06-03 at 18:04 -0400, Gregory Haskins wrote: > Hi Mark, > So with the v5 release of iosignalfd, we now have the notion of a > "trigger", the API of which is as follows: > > ----------------------- > /*! > * \brief Assign an eventfd to an IO port (PIO or MMIO) > * > * Assigns an eventfd based file-descriptor to a specific PIO or MMIO > * address range. Any guest writes to the specified range will generate > * an eventfd signal. > * > * A data-match pointer can be optionally provided in "trigger" and only > * writes which match this value exactly will generate an event. The length > * of the trigger is established by the length of the overall IO range, and > * therefore must be in a natural byte-width for the IO routines of your > * particular architecture (e.g. 1, 2, 4, or 8 bytes on x86_64).
This looks like it'll work fine for virtio-pci.
Thanks, Mark.
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