On 2/22/19 3:42 AM, Tiwei Bie wrote:
Highlight that vhost zero copy mbufs should be consumed as soon as possible. Signed-off-by: Tiwei Bie <tiwei....@intel.com> --- doc/guides/prog_guide/vhost_lib.rst | 3 +++ 1 file changed, 3 insertions(+) diff --git a/doc/guides/prog_guide/vhost_lib.rst b/doc/guides/prog_guide/vhost_lib.rst index c77df338f..a86c07a62 100644 --- a/doc/guides/prog_guide/vhost_lib.rst +++ b/doc/guides/prog_guide/vhost_lib.rst @@ -92,6 +92,9 @@ The following is an overview of some key Vhost API functions: to use vfio-pci driver, please insert vfio-pci kernel module in noiommu mode.+ * The consumer of zero copy mbufs should consume these mbufs as soon as+ possible, otherwise it may block the operations in vhost. + - ``RTE_VHOST_USER_IOMMU_SUPPORT``IOMMU support will be enabled when this flag is set. It is disabled by
Indeed, and it may also block QEMU. That's what I find really fragile with dequeue zero-copy. Reviewed-by: Maxime Coquelin <maxime.coque...@redhat.com> Thanks, Maxime
