From: Michael S. Tsirkin m...@redhat.com
Date: Wed, 31 Oct 2012 12:31:06 +0200
-void vhost_zerocopy_callback(struct ubuf_info *ubuf)
+void vhost_zerocopy_callback(struct ubuf_info *ubuf, int zerocopy_status)
If you're only reporting true/false values, even just for now,
please use 'bool' for
On Thu, Nov 01, 2012 at 11:50:24AM -0400, David Miller wrote:
From: Michael S. Tsirkin m...@redhat.com
Date: Wed, 31 Oct 2012 12:31:06 +0200
-void vhost_zerocopy_callback(struct ubuf_info *ubuf)
+void vhost_zerocopy_callback(struct ubuf_info *ubuf, int zerocopy_status)
If you're only
From: Michael S. Tsirkin m...@redhat.com
Date: Thu, 1 Nov 2012 18:16:11 +0200
Do you think it's over-engineering, or a good idea?
Engineer what you need, not what you might need.
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Even if skb is marked for zero copy, net core might still decide
to copy it later which is somewhat slower than a copy in user context:
besides copying the data we need to pin/unpin the pages.
Add a parameter reporting such cases through zero copy callback:
if this happens a lot, device can take
