Re: [Qemu-devel] [RFC] vhost-user: introduce F_NEED_ALL_IOTLB protocol feature

[Tiwei Bie]

Hi Peter,

On Wed, Apr 11, 2018 at 04:00:36PM +0800, Peter Xu wrote:
> On Wed, Apr 11, 2018 at 03:20:27PM +0800, Tiwei Bie wrote:
> 
> [...]
> 
> > This is just a RFC for now. It seems that, it doesn't work
> > as expected when guest is using kernel driver (To handle
> > this case, it seems that some RAM regions' events also need
> > to be listened). Any comments would be appreciated! Thanks!
> 
> Hi, Tiwei,
> 
> What's your kernel command line in the guest?  Is iommu=pt there?

Yeah, you are right! The related things in kernel command line are:

iommu=pt intel_iommu=on

Hmm, how will this param affect vIOMMU's behaviour?..

Best regards,
Tiwei Bie

> 
> -- 
> Peter Xu