Re: [RFC] virtio: use mandatory barriers for remote processor vdevs
From: "Michael S. Tsirkin" <mst@redhat.com>
Date: 2011-11-29 15:18:28
Also in:
kvm, linux-arm-kernel, lkml
Possibly related (same subject, not in this thread)
- 2011-12-19 · Re: [RFC] virtio: use mandatory barriers for remote processor vdevs · Rusty Russell <hidden>
- 2011-12-19 · Re: [RFC] virtio: use mandatory barriers for remote processor vdevs · Amos Kong <hidden>
- 2011-12-19 · Re: [RFC] virtio: use mandatory barriers for remote processor vdevs · Rusty Russell <hidden>
- 2011-12-19 · Re: [RFC] virtio: use mandatory barriers for remote processor vdevs · Amos Kong <hidden>
- 2011-12-19 · Re: [RFC] virtio: use mandatory barriers for remote processor vdevs · Benjamin Herrenschmidt <benh@kernel.crashing.org>
On Tue, Nov 29, 2011 at 03:57:19PM +0200, Ohad Ben-Cohen wrote:
quoted
Is an extra branch faster or slower than reverting d57ed95?Sorry, unfortunately I have no way to measure this, as I don't have any virtualization/x86 setup. I'm developing on ARM SoCs, where virtualization hardware is coming, but not here yet.
You can try using the micro-benchmark in tools/virtio/. That does not need virtualization. -- MST