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]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1297724779.14710.3.camel@localhost.localdomain \
--to=mashirle@us.ibm.com \
--cc=arnd@arndb.de \
--cc=avi@redhat.com \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mst@redhat.com \
--cc=netdev@vger.kernel.org \
--cc=xiaohui.xin@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.