From: Shirley Ma <mashirle@us.ibm.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Avi Kivity <avi@redhat.com>, Arnd Bergmann <arnd@arndb.de>,
xiaohui.xin@intel.com, netdev@vger.kernel.org,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH V2 0/5] macvtap TX zero copy between guest and host kernel
Date: Mon, 14 Feb 2011 15:06:19 -0800 [thread overview]
Message-ID: <1297724779.14710.3.camel@localhost.localdomain> (raw)
In-Reply-To: <20110214130957.GA3128@redhat.com>
On Mon, 2011-02-14 at 15:09 +0200, Michael S. Tsirkin wrote:
> What's the status here? Since there are core net changes, we'll need
> to
> see the final version soon if it's to appear in 2.6.39.
I am updating the patch and retesting it for the new kernel. I am trying
to understand why zero copy patch caused small message size guest exits
doubled.
> Could the problem be related to the patch
> virtio_net: Add schedule check to napi_enable call
> ?
Not sure, I will retest w/i this patch.
> Also, I expect there should be driver patches for some
> devices? Where are they?
Yes, a NET_F_ZEROCOPY... flag is introduced for the device we we want to
support zero copy.
Thanks
Shirley
prev parent reply other threads:[~2011-02-14 23:06 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-10 9:51 [RFC PATCH V2 0/5] macvtap TX zero copy between guest and host kernel Shirley Ma
2010-12-10 10:16 ` Shirley Ma
2011-02-14 13:09 ` Michael S. Tsirkin
2011-02-14 23:06 ` Shirley Ma [this message]
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