doc: improve vhost zero copy guide
Highlight that vhost zero copy mbufs should be consumed as soon as possible. Signed-off-by: Tiwei Bie <tiwei.bie@intel.com> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
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@ -92,6 +92,9 @@ The following is an overview of some key Vhost API functions:
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to use vfio-pci driver, please insert vfio-pci kernel module in noiommu
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mode.
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* The consumer of zero copy mbufs should consume these mbufs as soon as
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possible, otherwise it may block the operations in vhost.
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- ``RTE_VHOST_USER_IOMMU_SUPPORT``
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IOMMU support will be enabled when this flag is set. It is disabled by
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