[RFC] virtio: use mandatory barriers for remote processor vdevs

On Tue, Nov 29, 2011 at 5:19 PM, Michael S. Tsirkin [off-list ref] wrote:

On Tue, Nov 29, 2011 at 03:57:19PM +0200, Ohad Ben-Cohen wrote:

quoted

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/.

Hmm, care to show me exactly what do you mean ?

Though I somewhat suspect that any micro-benchmarking I'll do with my
random ARM SoC will not have much value to real virtualization/x86
workloads.

Thanks,
Ohad.