Re: [Xen-devel] [v6][PATCH 2/2] xen:vtd: missing RMRR mapping while share EPT

["Chen, Tiejun" <tiejun.chen@xxxxxxxxx>]

On 2014/9/24 16:47, Jan Beulich wrote:
> > > > On 24.09.14 at 10:35, <tiejun.chen@xxxxxxxxx> wrote:
> > In tools stack, how can we get ultimate e820 table built by hvmloader?
> What is this needed for?
I mean in case of a hotplug after the migration, we should check any 
overlap with current existing RAM/MMIO, right? So we need to know 
current existing guest RAM/MMIO layout since this ultimate e820 table is 
just built by hvmloader, not in xen internal.
Thanks
Tiejun

> > 7. One RMRR can be mapped for multiple devices in multiple domains
> >
> > So we may need to do something to stop this potential damage between
> > domains.
> Good point. We should enforce these to be group assigned (along
> the lines of what is already done with XEN_DOMCTL_get_device_group).
>
> Jan
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