Anthony Liguori wrote:

Avi Kivity wrote:
  

quoted

Anthony Liguori wrote:
  
    

quoted

This is a PCI device that implements a transport for virtio.  It allows virtio
devices to be used by QEMU based VMMs like KVM or Xen.

  
    
      

Didn't see support for dma.
    

Not sure what you're expecting there.  Using dma_ops in virtio_ring?

  

quoted

 I think that with Amit's pvdma patches you
can support dma-capable devices as well without too much fuss.
  
    

What is the use case you're thinking of?  A semi-paravirt driver that 
does dma directly to a device?

Regards,

Anthony Liguori

  

You would also lose performance since pv-dma will trigger an exit for 
each virtio io while
virtio kicks the hypervisor after several IOs were queued.

-------------------------------------------------------------------------
This SF.net email is sponsored by: Splunk Inc.
Still grepping through log files to find problems?  Stop.
Now Search log events and configuration files using AJAX and a browser.
Download your FREE copy of Splunk now >> http://get.splunk.com/
_______________________________________________
kvm-devel mailing list
kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
https://lists.sourceforge.net/lists/listinfo/kvm-devel

  

-------------------------------------------------------------------------
This SF.net email is sponsored by: Splunk Inc.
Still grepping through log files to find problems?  Stop.
Now Search log events and configuration files using AJAX and a browser.
Download your FREE copy of Splunk now >> http://get.splunk.com/